Engine Control Module (ECM/ECU) for the 2006 Toyota Sienna FWD with the 3.3L V6 engine and automatic transmission (A/T).
We refurbished, updated, and tested this ECM.
These Toyota Sienna units came with and without the immobilizer system (security system). If you’re ordering, please let us know whether your car has the immobilizer system enabled or disabled, so we can properly program the ECM before shipping.
If your car has the immobilizer system disabled, you will only need to install the ECM, and it will be ready to use. If the immobilizer system is enabled, let us know and you will also receive instructions and a tool to perform a simple process to adapt this replacement ECM to your car’s security system (sync process).
We will program your car’s VIN before shipping if you include it when ordering this ECM. We provide a form at checkout to enter your car’s VIN.
Part Number
89661-08141
Exchange Part Numbers
89661-08141
89661-08141 84
590-50565 (Hollander)
WHY BUYING FROM US
We offer quality items backed by a great warranty. The ECMs we offer are tested, updated, and programmed with your car’s VIN. You will get the best value on these ECMs when you buy from us.
IDENTIFYING THE PART NUMBER
Your ECM part number is on the label at the top of the ECM. An example is shown below. In this example, the part number is “89661-08141”


Please, before ordering, make sure your ECM part number matches one of the exchange part numbers listed above on this page, which are 100% compatible.
APPLICATIONS
Model Covered
- 2006 Toyota Siena 3.3L, 6-Cylinders, 2WD, Automatic (A/T) transmission with or without the immobilizer security system..
POSSIBLE SYMPTOMS
A bad ECM in the 2006 Toyota Sienna may cause any of numerous symptoms, but the most common are:
- The engine won’t start
- Transmission harsh shifting problems
- May give several sensor error codes while all sensors check good
- Harsh engagement when put in reverse.
ECM Location:
The 2006 Toyota Sienna engine ECM is located behind the glove compartment on the right, as shown below.

Notes referring to common questions we receive
- This is a direct replacement for the 2006 Toyota Sienna ECM for the V6, 2WD, 3.3L models.
- ECM (Engine Control Module) and ECU (Engine Control Unit) refer to the same part.
- No programming is needed.
- If the immobilizer is active, follow the instructions in the included document to sync your ECM to your car.
- The warranty of this unit is specified at the top of this page.
- We ship worldwide.
- We ship via USPS and FedEx.
- Shipping to the USA via USPS Priority Mail is FREE.
- We ship to PO Boxes and APO Boxes (military) via USPS
- When installing, disconnect the vehicle’s battery.
- No core charges. You do not need to send back your old ECM as a core.
- If you include your car’s VIN when ordering, we will program it into the ECM at NO extra charge.
This is a refurbished product. It has been put back to factory functioning conditions and has been tested and made sure that it works as new. In addition, a reasonable warranty has been included for the peace of mind of our customers.
Some images shown here will be for the only purpose of identifying the product, while in some other cases, the images are the actual product images. That been said, the product you receive may vary slightly from the images shown here. Nevertheless, we always pick the best and cleanest one we have available at the moment of shipping your order :)
TAGS: 89661 08141, 8966108141, toyota sienna ecm ecu



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