A faulty transmission control module (TCM) most often causes limp mode with the gearbox stuck in one gear, harsh jolts when you select D or R, erratic gear changes, flashing PRND letters and a gearbox or engine warning light. However, the same symptoms are often caused by a low gearbox oil level, a weak battery, a poor earth or a faulty sensor. To test a transmission control module, start by checking the battery and reading the fault codes with a diagnostic tool that can talk to the gearbox control unit, then check the power supply, the connector, the oil and the live data. Below we explain the symptoms, the diagnostic steps and what the most common fault codes mean.
Engine control unit Toyota Avensis 8966105C71 MB1758009411
Vendors's code: MB1758009411
Product code: 8966105C71
Barcode:
Code 39:
ISBN:
£92.50
Price
£92.50
£113.77
Price
£113.77
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Engine control unit Toyota Avensis 8966105C71 MB1758009411
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from
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(Poland)
Price 30 euros applies shipments to 5 kg on worldwide. Above this weight, please contact us by email to check price
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What does number 8966105C71 on an engine control unit mean?
Used Toyota engine control unit with number 8966105C71. Send us the numbers from the label on your control unit.
Where to find number 8966105C71 on an engine control unit?
Control unit 8966105C71 is a used original engine computer. It has been inspected before sale, and below you will find the complete list of numbers from the listing. The listing states that this control unit is for: Toyota Avensis.
Control unit numbers and markings
The numbers as written in the listing and as a single string, the way catalogues list them:
- 8966105C71, car manufacturer's original number,
- MB1758009411, control unit manufacturer's number.
Compare the numbers with the original control unit in your car, and if any of them differs, write to us before buying.
Control unit variant
This listing is for a control unit in the following variant(s): Locked / Unlocked. We describe the differences between the variants (locked, unlocked, Virgin, IMMO OFF, Plug and Play, clone, full set) on the ECU preparation options page. Before buying, send us the numbers from the label and we will confirm which variant is available for that number.
When an engine control unit needs replacing
- the engine starts and immediately stalls,
- control unit communication or power supply errors appear in the fault memory,
- faults appear and disappear, usually once the engine has warmed up,
- starting is blocked by the immobiliser after the electronics have been replaced or repaired.
Only diagnostics can confirm an engine control unit failure, so read the fault codes before buying. After replacement, the control unit may need to be programmed or adapted to the car.
Questions and answers
| Are the make and model of the car enough to choose the part? |
|---|
| No. A single model comes with different versions of the control unit, depending on the engine, the software version and the equipment. The most reliable reference is the number on the original control unit. |
| Does a lit engine warning light always mean a faulty control unit? |
| No. Read the fault codes first, because the cause may be a sensor, the wiring or the power supply. |
| Is this an original control unit? |
| Yes, it is a used original engine control unit, not an aftermarket replacement. You can compare the numbers on the label with the original in your car. |
| What is the condition of this control unit? |
| It is an original recycled part in good condition, checked by us. Warranty details are in the product features table. |
Not sure about the match? Send us a photo of the label on your control unit and we will check whether this part will fit.
