Harsh shifting on Toyota RAV4 automatic transmission
If you own a Toyota Rav4 from 2001 through 2005 with automatic transmission and you are experiencing problems with the transmission, like harsh shifting, loss of power, launching on third gear and/or slamming into gear when it is put in reverse, then you should know that those problems are caused by a defective engine control module (Engine Computer, ECM or ECU), which also controls the automatic transmission.
These problems are erratic and may only show at intermittent intervals or when the vehicle is warm or have been driven for a specific time. Sometimes it shows up one day and the next morning it works flawlessly. Sometimes the problem is only in the morning and sometimes the problem is at night.
Besides showing the issues mentioned here, it may also show trouble codes P0750, P0753, P0755, P0758, and/or P1760, though most of the time it shows no codes at all. Think that the trouble codes (check engine codes) that a vehicle shows when scanned, are generated by the very same computer that is failing. It is good for diagnosing things monitored by the different sensors connected to it, but it is not so good for diagnosing itself.
Description of what happens
Shifting on the “electronic” automatic transmission is controlled by the ECM by sending electrical pulses to a set of solenoids installed in the transmission’s valve body. Such solenoids, gradually open and close the path of oil transmission fluid pressure depending on the pulses they receive from the ECM, to do mechanical actions, like shifting gears, locking the torque converter, and controlling the pressure applied to it.
A defective ECM can no longer correctly control the transmission and starts sending erratic pulses to the solenoids, which in turn, transfers the erratic behavior of the ECM to the transmission by doing equivalent erratic mechanical changes and movements inside the transmission. This is why some customers that have had problems with the ECM, describe it like if the transmission feels like falling apart. At this time, the ECM must be repaired before the transmission suffers an internal failure commonly caused by using defective ECMs for long time periods.
Reprogramming or updating the computer software will NOT fix the problem. It must be PROPERLY repaired.
What the ECM look like?
Below is the 2001-2003 ECM box:
Where is the ECM located?
Location of the ECM in your 2001-2003 Toyota Rav4:
Common scenarios examples
You stop at a red traffic light and when continuing, your RAV4 hardly moves, like if it is carrying a very heavy load. This happens because, at that moment, the damaged ECM failed to send the electrical pulse to the transmission solenoids to shift down to first gear, keeping it very often in the third gear instead.
When you try to move your Rav4 vehicle and it hardly moves and feels very sluggish, our natural response is to accelerate harder to try to move it, while noticing that RPMs go up and your Rav4 is still moving slow or sluggish. It is not until certain speed that it picks up and moves normally. This situation, in no time, will burn the transmission internal clutches, and not only the ECM will need service, but the transmission too. That is why, when you notice any of these symptoms, you must act quickly and have your Rav4 ECM serviced the soonest possible. If you do so, the problem will only be a damaged ECM. If you do not service it and instead keep using your vehicle with a failing ECM, soon a transmission repair or replacement job will add up to the bill, which at the time of writing this, may go up to $4000. For these models’ estimated market value, allowing the transmission to fail this way, would be practically uneconomical to repair it. DO NOT TAKE CHANCES AND ACT NOW!
Repairing the ECM is not expensive. At Rav4Repair.com, we charge less than $200 and on top of that, allow customers to offer a better price for them (Better Offer feature). If we accept the offer, we email them a coupon code to match their offer when ordering. Otherwise, we would send a counter-offer, still at a cheaper price than listed, and offer a 2-year warranty.
This Rav4 transmission problem is very common and it is affecting more than a million Toyota Rav4 vehicles all around the globe. In the USA alone, 246,000 units are estimated to be affected. The units affected are the 2001-2005 Toyota models; Toyota Rav4, Toyota Picnic, Toyota Avensis, some Toyota Ipsum, and some Toyota Gaia. Either four-wheel drive (4WD) or two-wheel-drive (2WD) models. Either left-sided or right-sided steering wheel. Either 2.0L engine (1AZ-FE and 1AZ-FSE) or 2.4L engine (2AZ-FE).
Symptoms of the problem
Below is a list of the most common symptoms with a failing ECM in your 2001-2005 Toyota Rav4. You may experience only one of these symptoms or a combination of more than one of them:
- Shifts erratically or slips gears
- Slamming into gear when putting it in reverse
- Starts in 3rd gear instead of 1st gear
- Too sluggish to get it moving after stopping
- Rattling or clicking noise coming from the front
- False solenoid DTC error codes (P0750, P0753, P0755, P0758 and/or P1760)
- Sometimes feels like it is applying the brakes by itself
- In many cases, low fuel economy
*** IMPORTANT NOTE ***
If your Rav4 does not engage in reverse AT ALL, at that point, it means that the ECM is damaged, BUT the damage went beyond the ECM, into the transmission.
The ECM controls all the forward gears (1st, 2nd, 3rd, and 4th), but it does not control the reverse. The reverse, even when affected by a damaged ECM, like bumping when putting it in reverse, the reverse is mechanical and not controlled by the ECM.
So, the ECM must be repaired, but so the transmission. If you decide to repair your car, you will need a good or properly repaired ECM in order to prevent damage to a new, used, or repaired transmission. Repairing your ECM in these cases will always be the first step to take for fixing your Toyota Rav4.
ECM Part Numbers – Below is a partial list of the Toyota part numbers affected by this issue, but there are many others that are not included at this moment.
| 89661-42620 | 89661-42621 | 89661-42622 | 89661-42650 | 89661-42651 |
| 89661-42652 | 89661-42653 | 89661-42654 | 89661-42660 | 89661-42661 |
| 89661-42662 | 89661-42663 | 89661-42664 | 89661-42680 | 89661-42681 |
| 89661-42682 | 89661-42683 | 89661-42700 | 89661-42701 | 89661-42702 |
| 89661-42720 | 89661-42760 | 89661-42761 | 89661-42810 | 89661-42811 |
| 89661-42812 | 89661-42820 | 89661-42821 | 89661-42822 | 89661-42840 |
| 89661-42880 | 89661-42890 | 89661-42A30 | 89661-42A31 | 89661-42A50 |
| 89661-42A51 | 89661-42A80 | 89661-42A81 | 89661-42A82 | 89661-42A90 |
| 89661-42A91 | 89661-42A92 | 89661-42B00 | 89661-42B01 | 89661-42B40 |
| 89661-42B80 | 89661-42B90 | 89661-44230 | 89661-44250 | 89661-44270 |
| 89661-44271 | 89661-44272 | 89661-44290 | 89666-28140 | 04009-39142 |
| 04009-39242 | 04009-39542 | 04009-39643 | 04009-41242 | 04009-41342 |
| 30510-42100-84 | 30510-42110-84 |
What about those low-cost services offered on eBay and other Internet places?
There is a reason why the word “PROPERLY” was in all-capitals at the beginning of this article. Well, the next step after noticing the issues with your Rav4 is to service your ECM. If you search the internet, you will stumble upon an ever-growing list of individuals and “companies” offering this service, including eBay. The problem is that they are doing a very poor or incomplete job, maybe due to the fact that many of them do not fully understand the problem and causes of the failure in the ECM’s circuit and are fixing either the problem or part of it, but not the cause of the problem. This makes the ECM fail again soon.
We have received MANY ECMs that were previously “fixed” by any of our competitors. Those ECMs get here because of the owners doing a second attempt to have their ECM repaired after the service from our competitors failed. That’s how we know the quality of the job that they are doing. The most notorious cases are when they cover the circuit with epoxy resin, making it inaccessible for a second revision of the problem, as most of the time, it fails again (thanks to our friends in Davie, Florida for bringing this headache into the scene). I am not sure why they cover the circuit with epoxy, but when their “serviced” ECMs end up here in our shop, the epoxy needs to be removed and many parts replaced because the epoxy corroded those parts.
Removing the epoxy takes a lot of time and patience. We always do our best and while we have succeeded in most of these cases, there is always a chance of the ECM needing replacement. Below are examples of what has been found.
In the picture below, you can see three control chips for the transmission’s solenoids. All three are the same chip type but in different situations. These chips are mounted on the circuit board of the 2001-2003 Rav4 ECM. From the image below:
- This chip was replaced from an ECM with epoxy. Notice the corrosion in the solder tab. This solder tab is tightly soldered to the circuit board for heat dissipation and still, corrosion from the epoxy, which was on the other side of the circuit board, reached to it.
- The second chip form the top was a chip replaced from an ECM WITHOUT epoxy. Notice the difference. The chip is no good but was not corroded and still has clean solder remanents on its tab.
- The third chip from the top is an unused brand new chip for comparison.
So it is obvious that if you send your ECM to the shop doing this, or if you buy a replacement ECM from them, you can be sure that it will eventually fail if they used their epoxy “solution”.
A reliable and Affordable Solution
We offer a professional service for repairing your 2001-2005 Toyota Rav4 ECM where you may check in the link below. While it might take a little more time, we do accept ECMs even if they have been tampered with or have previous repair attempts. That is how confident we are about our skills and knowledge about this job. Even the price will be the same:
Do you own a 2001-2005 Toyota Rav4? Having problems with the transmission? We can help!
For more details you may access our information and ordering webpage in the link below::
Our Facebook page for information and unsolicited testimonials is:
The service includes FREE shipping to the USA. The labor rate covers the repair job, any needed parts, programming, and testing.
Warranty
Our warranty on the job is 2 years. About the Toyota warranty, at this date their original extended or “enhanced” warranty is over, as all vehicles included in such a warranty are either more than 150,000 miles or otherwise, the most logical reason, they are more than 10 years old. If you are interested in the original warranty documents anyway, you may download it in PDF format from here:
2001-2003 Toyota Rav4 Bulletin on Harsh Shifting
2001-2003 Toyota Rav4 Warranty Extension
Some geeky information for techs
A partial schematic of the wiring of the solenoids on the RAV4 automatic transmission from the ECM.
Interested in the full wiring diagram of the ECU connections of the 2001-2003 Toyota Rav4?
(ALWAYS check your SPAM folder in case that you don't see the download in your inbox.)
Your information is safe with us. We take privacy seriously and DO NOT sell or share your information in any way.
Your data will only be used for sending the requested document(s) and for emailing any related information or material that we might offer in any future. If we do so, you will always be provided with a link for unsubscribing if you desire to do so.
Location of the solenoids in the automatic transmission.
(Most asked: 2001 Toyota rav4 shift solenoids location)
Solenoids terminal connector and solenoid coils resistance
Is my rav4 a 2 wheel (2WD) or 4 wheel drive (4WD)?
If you have no idea if your RAV4 is a 4×4 vehicle or a 4×2 vehicle, it is easy to identify by looking at your RAV4’s VIN number. All 2001-2003 4×4 RAV4 vehicles VIN number starts with “JTEHH20“, while 4×2 vehicles’ VIN number will start with “JTEGH20“. The significant figure, in this case, is the 4th character. An “H” means 4×4, while a “G” means 4×2.
How do I know is my Toyota Rav4 has the immobilizer system active?
You may know if the immobilizer is enabled or disabled in your Rav4 by looking at the article in the link below, which was published for that purpose.
I have a toyota rav 4 2003. I had to have the computer that runs the transmission (ECM) replaced at BOCH Toyota on July 27 2013.
The price was 1398.86. The car only had 70391 miles at the time. I have just found out that this has been a known problem and that the warranty has been extended 10 years or 150000 miles.
I believe I should get reimbursed by Toyota even though it was 6 months after the 10 years because of our low milage. We have bought 3 Toyotas from Boch. We believe Toyotas are one of the best cars out there. We would like to continue buying Toyotas but this problem kind of set us back because we were never notified this was a known problem.
We believe it was Toyotas responsibility to notify us of the problem and they never did-even when we went to get it fised. My name is Francias Beauparlant.
Francias, I just posted the information you sent me, without your address. If you wish to put it or if you wish to add anything to your statement, you can do it here. Thank you!
My daughter’s 2003 Rav4 was in both of our names but neither of us ever received a notice from Toyota that the ECM or the transmission had a condition requiring repair and or recall to be fixed. Is there any recourse for me now?
Please advise if you are in a similar situation and have found a way forward. Thanks!
Ken Jackson at ken_jackson@sil.org
Hello Ken. Unfortunately, the only way was by having fewer than 150,000 miles or fewer than 10 years, whichever comes first. Also, the owner needed to be the original owner of the Rav4. On top of that, the Rav4 must have been sold in the USA, not bought somewhere else, and then imported.
All owners that were inside those parameters, were refunded by Toyota for what they spent repairing their 2001-2003 Rav4 vehicles, no matter what shop did the job and how much did they spend.
This was never mentioned before, but many 2004 models are affected by a similar problem too. It is not surprising that all the 2001-2003 and also 2004 Toyota Rav4 models have an ECM or ECU which was manufactured by the same Company (Fujitsu Ten) for Toyota.
Unfortunately, the latest models covered by the enhanced warranty from Toyota are the 2003 models, which already have more than 10 years.
The only way right now is to repair or replace the ECM (Engine Control Module). In the case of the repair option, prices vary from $79.00 to $300.00 from shop to shop, and unfortunately, the price of the job is often closely related to the quality of that job.
The only one I can recommend is the following:
http://rav4repair.com
Best wishes
Hello.
Do you know how can I find the part number of the SL1 solenoid of 2002 Toyota Rav4.
Thank you!
Hello Jonathan.
It would be as follows (parts are Denso):
SL1
W0133-1939689
SL2
W0133-1939691
SLT
W0133-1740885
Prices swing from $100 to $200.
Hi,
I’ve read this with interest. I have a Toyota Land Cruiser Prado, year 1997 with similar symptons as above. Is the fix the same as the one described for the Rav4?
Thank you.
hello, the shop that you are recommending is closed til july 27th. do you know, what is the cost for the service? I need to repair my ecm, thank you.
i have a 2002 rav 4 ,its been in the tranny shop for 3 years waiting for me to find the money to fix it.we did not know about ex warrenty. is there any imfo you can give me to get the transmission fixed.
Hello Cathy.
I am sorry, but unfortunately, all extended warranties from Toyota are not valid on this date. The only thing I can tell you about it is to make sure it is the transmission because many, many transmission mechanics do not know the common issue with the ECM (Engine Control Module). When the ECM fails, it is exactly as if the transmission is damaged, but the truth is that in most cases we have seen, the problems have only been a bad ECM. Since the ECM fails first and it is what causes all the issues from the beginning, it would be wise, more economic and convenient at the same time to service the ECM first. A damaged ECM will damage a new or repaired transmission, but not the other way.
If you are interested in our service in any future, below is the information and ordering link:
http://rav4repair.com
Best regards,
Richard
http://www.Rav4Repair.com
http://www.facebook.com/Rav4Repair
I had the same issue with my 2003 rav4. I got a rebuilt ecm and put it back in my car. My car no longer has issue going from stop to start, but it stuggles to shift from 2nd to 3rd gear and then again from 4th to 5th gear. I have already driven the car for over 50 miles. Do I need to drive the car for a longer period of time to let the computer relearn how to shift? Thank you.
Hi,
I recently bought a used RAV4 2003 model (mileage on it 101800 miles) and have been facing the similar issues and really need assistance. I wish to have my EMU repaired but realized the distance between where I live (Papua New Guinea) and the location of where it will be repaired. Am not to sure if you do provide service to countries almost half a world away
Hello Soroman. Thank you for writing. We provide the Rav4 ECM repair service all around the globe.
Please email me at info@otherdeal.com for the details.
You may see unsolicited testimonials on our Facebook page at http://www.facebook.com/Rav4Repair
Regards,
Richard
Is there a way to find out if the ECM was replaced? Bought my rav4 used and 2 weeks ago it felt like the transmission (or something) was breaking into a million pieces in the low gears. I have it with a mechanic friend of the family who is telling me it needs a new transmission. Like you said, he ran it for code errors, nothing. I’m paranoid to pour money into this and then it happens again because its the computer vs actual transmission problems
Richard Hi
I have had the ECM replaced at my local tranny shop new ECM from Toyota it chanded nothing . Is it possible if i send you my original ECM that you can repair . Or at this stage is the tranny done/dead period
Hello Tom, what exactly are the symptoms of your Rav4?
I’ve had the ecm replaced on 03 rav4 automatic tranny now it says sl2 needs replaced it doesn’t start in 1st gear otherwise everything else seems fine can i drive it like this? How much does it cost to have sl2 replaced?
Hello Carolyn. The replacement ECM was a brand new one or from an authorized dealer? I am asking because if the ECM is used or poorly repaired or “refurbished”, it will have similar problems. This is happening to ALL those ECMs unless they are properly repaired. I have even received ECMs from the “new batch” replaced by Toyota itself that failed after a couple of years. The thing is that the solenoid could be bad, as it is a mechanical part as many, but I have yet to see one damaged and I have been working with the ECMs of these models since 2009.
Hi C, someone advice that I should add another ecm that will control the transmission separately. Would that work? What is the effect of using 2 ecm instead of one please?
Adding two ECMs is not possible. There is no provision in the circuit for doing that. Besides, the ECM in those models is two controllers in one. It controls engine and transmission with two different microcontrollers (MPU) in the same circuit. If you are having problems with your ECM, just let us know the details. We might offer you a good price on the repair service. info@Rav4Repair.com
Is there a way to tell if an ECM is an already replaced one?
Hello Erik.
Unfortunately, there are only two ways when it comes to the 2001-2003 Rav4.
The first possible way of knowing if the ECM was previously repaired or replaced, is if the part number belongs to the ECM replacement part numbers used exclusively for these transmission-issues cases. Such part numbers are different from the original ones. It starts with “04009” and looks like:
04009-41242
04009-41342
While the original part numbers always start with “89661”, like:
89661-42650
89661-42890
The second way would be by opening the ECM, but it would take a trained eye to see if it was previously repaired or modified.
There really is a third option, but it is rare and would only be true if the job was done by a shop of an authorized Toyota dealer. They should attach an “Authorized Modifications Label” to the underside of the engine hood. Such label should contain the following information:
Modified ECU part number
Calibration ID if updated
Dealer code
Date
Change Authority
So as you can see, not too many options here.
If you are in doubt, we can take a look at it for you and even repair it if you wish to.
If interested, please email us at info@Rav4Repair.com for the details
Regards,
Richard
Hello.
Do you know how can I find the part number of the SL1 solenoid of 2001Toyota Rav4.
Thank you!
Hello Nirmari.
To be honest, I have hardly seen one of those damaged. Most of the time the transmission problems with 2001-2005 Rav4 vehicles are caused by the ECM (Engine Control Module) and in fewer cases, the transmission.
Anyway, here is the information:
SL1 (A.K.A Solenoid A or SSA) – Part No. 35210-21010
SL2 (A.K.A Solenoid B or SSB) – Part No. 35220-21010
Prices range from around $300 (brand new and overpriced) to around $50 (remanufactured or refurbished).
Kind regards,
Richard
Thanks Richard! Really aprecciate tour help!
Good Morning Please I have a 2008 Rav4 and I also having this delay in response and sluggish move, I was wondering if this could also be an ECM issue. The fuel pump has been changed a couple of times and Im still experiencing the same issue. Help please the engine management light and 4WD light are both on. Help please
Hey there! I just would like to offer you a big thumbs up for your excellent information you have got here on this post. I’ll be coming back to your website for more soon.
So after an ECU has been repaired, does it need to be driven for a certain distance before it shifts properly or “resets”?
Hello JFlint.
Yes, since the transmission adaptation memory chip is reset during our service, you will need to drive your vehicle for some minutes, so the reset memory gets populated again with the correct values through the automatic relearn process of the ECM. If we would not reset such memory, old incorrect values obtained from the failing ECM will still be in memory and the vehicle will behave erratically.
ECM for a 2001 RAV4 LPN replaced twice and failed by the same company. So are in the process of getting a refund and the ECM that needs to be provided for a core. My question is do you have extra ECM could be repaired and sent to me so that I could put it in the vehicle if so what would that cost?
Hello Pat.
Thank you for contacting us. Please, what is the part number of your ECM (89661-42xxx)?
Dear Richard,
The link for me to be able to leave a review must have already expired as it has been more than 3 months since the ECM for my 2004 Rav4 was repaired. Here it is instead:
I was experiencing an intermittent issue with the transmission shifting of my 2004 Toyota Rav4 AWD with A/T with less than 98K miles, particularly when coming to a stop and all of a sudden it felt like my car was getting hit from behind. I was also experiencing engine surging when at a stop and the car would idle above 2000 rpm. I referred my issues to Richard to see if they are related at all to the ECM problems with the 2nd Gen Rav4s. Richard was kind enough to respond and provide his analysis, even offering some suggestions not related to ECM repair. I had some follow-up questions and Richard replied promptly to each one of them, which is very impressive. The engine surging eventually went away without me really doing anything, but the transmission jerking remained. I decided to send my 17 year-old ECM to Richard for repair as a preventive measure, even though the jerking issue may not be related. There was an outrageous delay with the US Postal Service delivering the package to Richard, which is not under his control, but he repaired and returned the ECM to me promptly. I wanted to wait and drive the car for a while, before providing a review. Overall, my Rav4 is running well. I hope that I can keep driving it for a few more years. I highly recommend Richard for your ECM repair. He’s a real class act!
Hello. At first thank you for all the clear información you share on this site. I bought a Rav4 2.4L 2005 in December 2020. Three months later I started to have transmission problems like not shifting gears and slamming when putting on reverse. In May I changed the transmission for a rebuild one. Since then I stoped to have problems to shifting gears, but having the same banging when I put it in reverse. I went back to the mechanic because I still has the 6 month warranty, left my car for a week and after he told me the problem was the solenoids and he changed them. After that I have been still experiencing the same slumming. The mechanic who changed the transmission told me it’s nonsense when I sent him a copy of your page and told me that he needs more investigation to find what’s the problem. Would you please give me your advise? How long it will take to ship me back my ECM after repair? The ECM’s part number is 89661-42B01 or 89661-42B80 the Toyota dealer told me and both numbers are on your list of repairs. Thank you.
Hello Tibor.
Thank you for commenting.
-“Would you please give me your advice?”
Sure I will. This reply is lengthy, but I chose to do it this way, so I can answer your question and enlighten anyone that is having similar problems with the 2001-2005 ECM. For personal details (yours and ours) we can use your email, but note, Yahoo and AOL emails are rejecting most of our emails and most of other businesses’ emails nowadays.
The problem you describe is the typical problem of a damaged ECM. Since the transmission is electronically controlled by solenoids and those solenoids are controlled by the ECM, when the ECM gets erratic, which is a common problem for all 2001-2005 Rav4 ECMs, the solenoids get erratic pulses too, producing erratic behavior in the transmission.
It is our experience that sooner or later, these ECMs will break (2001-2005 Rav4) and even the brand new replacement ECMs have “visited” our shop after a couple of years because they are mere replacements for the same unit. The new ones do have some improvement in the circuit, but not enough.
-“The mechanic who changed the transmission told me it’s nonsense when I sent him a copy of your page and told me that he needs more investigation to find what’s the problem.”
No nonsense at all. We have been repairing these ECMs for more than 10 years and MOST of them were damaged. Non-sense would be, at least for me that I know about these cases, would be to blindly replace the solenoids. I have hardly seen a damaged solenoid in these cases and you cannot rely on the scanner because if you think about it, the ECM that connects to the scanner to give the trouble codes, is the very same ECM that is damaged, failing to diagnose itself. That is also why there are no trouble codes shown in most cases.
The thing is that if the car is driven for some time with a damaged ECM, the transmission will wear out too and may even have an internal failure. Up to that point, the ECM and the transmission will need repair. That is why we advise repairing the ECM as soon as the symptoms show up, to avoid damaging the transmission and hence, avoiding further expenses.
-“How long it will take to ship me back my ECM after repair?”
About shipping, as soon as the ECM gets here and it is completed (one business day), shipping to the USA is done through USPS Priority Mail (FREE, 3-5 business days) and USPS Express Mail ($27, 2-3 business days). For all international shipments, we use FedEx and shipping and rates will depend on your location, for which, we provide a shipping calculator as soon as you “Add to Cart” the service at http://Rav4Repair.com
-“The ECM’s part number is 89661-42B01 or 89661-42B80”
Both numbers are 100% compatible and yes, we work on them. Those models fail with the same problems mentioned above and we can successfully repair them.
For more information on the service and for ordering, you may visit the link below:
http://Rav4Repair.com
The ECM will be repaired and reprogrammed and the whole circuit checked and corrected as needed, not only the actual problem.
Thank you, I appreciate your interest,
Richard
Thank you Richard for your attention and fast reply. As soon as I can I will send my ECM for repair. My car is from Mexico and want to know if you can do a software update as well. I have also a very bad gas mileage problem with my car.
Sure, the car is sold in Mexico, but that part number is also used in the USA.
Kind regards,
Richard
Rav4Repair.com
Jeg har en RAV 4 2001 og har hatt en del problemer de siste to åren.Jeg flushet gearkassen med renseveske og fylte AFT olje og den fungerte noen lunde normalt hel til nå 20 sep.22
er det fortsatt noen der ute som kan reparere dette?
På vanlig verksteder går det ikke an å sette inn bilen,klør seg både i hue og bak uten resultat
Hei Roy.
Først av alt, takk for bestillingen din.
Vi vil ta oss av disse problemene med din ECM. Så snart ECM kommer hit, vil vi gi deg beskjed og holde kontakten.
Vennlig hilsen,
Richard
(Oversatt av Google)
I have an 04 Toyota RAV4 with 180k on it in Iowa USA. My motor just went to crap & I’m looking at replacing with a used one when I started looking at the tranny for issues & crossed your neck thread. Mine seems to only shift hard the very 1st time you slide it in gear. I usually just wait a second & proceed without problem. This leads me to questions regarding my 2004
1. Does that sound like an issue to you, also one that caused my motor failure?
2. What are my options to replace it best if needed?
3. How to tell if it’s been replaced already.
4. The body is in very good condition & seemed to run fine. Previous owner Cross threaded oil plugged & I assume they may have run motor dry causing my failure. Would you recommend running from this vehicle or do you think I’m ok to proceed with dropping a 60k motor in it without much other concern?
Hello Jeff. Thank you for your comment.
“1. Does that sound like an issue to you, also one that caused my motor failure?
Yes, that is the ECM that is slightly starting to fail. This will progress slowly until it shifts really harshly. This may cause damage to the transmission. On the other hand, engine failure caused by the ECM is not something seen on these models. The transmission is the one at risk.”
“2. What are my options to replace it best if needed?
The best option I can recommend is to repair the ECM. This is always best in these cases because in my many years of experience, a used (not repaired) ECM will fail promptly and a new ECM ($$$) will fail in a matter of a few years. I have seen this over and over. ”
“3. How to tell if it’s been replaced already.
I, as a technician, can tell by inspecting the circuit of the ECM. Others can check for warranty labels that are often stuck to the ECM so the warranty is voided if the ECM is opened.”
“4. The body is in very good condition & seemed to run fine. Previous owner Cross threaded oil plugged & I assume they may have run motor dry causing my failure. Would you recommend running from this vehicle or do you think I’m ok to proceed with dropping a 60k motor in it without much other concern?”
My personal opinion about this is, if the body is in really good condition, the outcome of dropping a 90K miles engine is only dependent on the conditions of the engine itself because the transmission issue, based on your description, can be fixed as easily as repairing the ECM.
If you decide to fix the ECM, you may shop around for that service. You can also look at my service at:
Rav4Repair.com
What differentiates what I do form what others do is that I work with the whole circuit and NOT only with the issue itself. This has been the key to preventing other possible future issues, either related or not to the actual problem. The adaptive memory of the ECM is also reset so it starts relearning from zero as soon as reinstalled. Also, the firmware of the ECM is updated to the latest version from Toyota if it is not already up to date.
Kind regards,
Richard