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 Jaguar XJ6 XJ40 MKC7550 DBC4966
Vendors's code: MKC7550
Product code: MKC7550
Barcode:
Code 39:
ISBN:
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How can I check whether the comfort control module will fit Jaguar XJ6 XJ40?
Used, working part: comfort control module for Jaguar XJ6 XJ40 - numbers MKC7550; DBC 4966 / DBC4966. Before ordering, make sure the numbers match the label of your part.
Comfort control module Jaguar XJ6 XJ40
Looking for a replacement for a faulty module for Jaguar XJ6 XJ40? We offer a used, working comfort control module in good condition.
Vehicle and manufacturer
- Jaguar XJ6 XJ40 - model
- 1990-1994 - year
Numbers to compare
- MKC7550 - part number
- DBC 4966 / DBC4966 - additional part number
Typical failure symptoms
- door signalling works incorrectly,
- nothing happens when settings are changed,
- the battery drains overnight for no obvious reason,
- the interior lighting does not switch off.
Inspect the module connectors: green or burnt pins cause symptoms similar to faulty electronics.
Role of the part in the car
The module collects the driver's commands and distributes power to individual body circuits, so many small functions in the car depend on it.
Fitment
Compare number MKC7550 in full with the number on your part. Different versions were fitted to the same models, so the number decides, not the model and year alone.
Questions and answers
| What does "used, working" mean? |
|---|
| The part is used but working. The warranty is stated in the product features. |
| Which number matters most when matching? |
| It is best to compare all numbers on the label, above all the one marked as the manufacturer or OEM number. |
| What should I check on delivery? |
| Check that the numbers match the description and that the connectors and housing show no cracks or corrosion. |
Not sure? Write to contact@auto24parts.com and we will help you choose the right part for your car.