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.
BSI comfort module Mercedes Vito A6395450401 518878004
Vendors's code: A6395450401
Product code: A6395450401
Barcode:
Code 39:
ISBN:
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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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Part number A6395450401 - is it the right choice?
Used, working part: BSI comfort module for Mercedes Vito - numbers A 639 545 0401 / A6395450401; 518878004. Before ordering, make sure the numbers match the label of your part.
BSI comfort module Mercedes Vito
For Mercedes Vito (2008) we offer a used BSI comfort module that you can match by the numbers on the list. It is working and in good condition.
What a fault looks like
- the car does not enter full sleep mode,
- the module gets hot or smells burnt,
- random errors appear in the diagnostic memory,
- a selected body function does not work although the switch is fine.
It is worth reading the fault codes first, because many body faults come from switches or wiring rather than the module itself.
Vehicle and manufacturer
- Mercedes Vito - model
- 2008 - year
- Hella - manufacturer
How this part works
The module collects the driver's commands and distributes power to individual body circuits, so many small functions in the car depend on it. BSI (Boîtier de Servitude Intelligent) is the name of the comfort module used in PSA group cars and, in some models, in vehicles linked to that group.
How to choose the part
For this model we offer several parts that differ in their numbers. The number on the label and the year decide, not the model name alone.
Numbers on the label
- A 639 545 0401 / A6395450401 - Mercedes-Benz number (OEM)
- 518878004 - additional part number
Frequently asked questions
| Do you also sell connectors or wiring? |
|---|
| This listing covers only the part described in the title. You will find other items in the remaining shop categories, or ask us about availability. |
| What condition is this part in? |
| It is a used, working part in good condition. Warranty details are listed in the offer features. |
| How can I check whether this part fits my car? |
| Compare the model, year and the numbers of the part fitted in your car with the numbers in the description. You can also send us a photo. |
If you have questions about the application, write to contact@auto24parts.com and give the number from the label.