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.
Comfort control module Volkswagen Golf IV Passat 1JO959799AH
Vendors's code: 1JO959799AH
Product code: 1JO959799AH
Barcode:
Code 39:
ISBN:
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Part number 1JO959799AH - is it the right choice?
Used, working part: comfort control module for Volkswagen Golf IV Passat - numbers 1JO959799AH. Compare the numbers with the label of the part currently in your car.
Comfort control module Volkswagen Golf IV Passat
The comfort control module is an electronic body module that handles small comfort functions in the car. This listing applies to: Volkswagen Golf IV Passat. The part is used, working and in good condition.
How to choose the part
Compare number 1JO959799AH in full with the number on your part. Different versions were fitted to the same models, so the number decides, not the model alone.
Numbers to compare
- 1JO959799AH - VAG group number (OEM)
Symptoms of a fault
- wipers or lights switch on by themselves,
- the car does not respond to the remote,
- several unrelated functions stop working at the same time,
- the tester reports no communication with the module.
Before buying, make sure the cause is not the power supply or wiring, and only then replace the module.
Listing details
- Volkswagen Golf IV Passat - model
Function in the car
The module electronics are exposed to moisture and contact corrosion, especially when fitted in the scuttle, under the dashboard or near the doors. In VAG group cars the same model came with different module versions, so it is worth comparing the manufacturer number too.
Frequently asked questions
| What condition is this part in? |
|---|
| We sell it as a used, working part in good condition; the warranty length is given in the offer features. |
| Is the part new? |
| We sell it as a used, working part in good condition; the warranty length is given in the offer features. |
| What if I cannot see my number in the description? |
| Write to us and give the number from your part. We will check whether we have it in stock, also in another listing. |
Send a photo of your part or its number to contact@auto24parts.com and we will confirm whether this listing fits.