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.
ABS pump Mercedes Bosch A2124310000 0265255843 0265956094
Vendors's code: 0265956094
Product code: A2124310000
Barcode:
Code 39:
ISBN:
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When is ABS pump A2124310000 the right choice for your Mercedes?
ABS pump A2124310000 complete with control unit, used and inspected. Compare the numbers with the original in your car.
Mercedes ABS pump A2124310000: hydraulic module with control unit
This module is made by Bosch. ABS pump A2124310000 is sold together with its control unit, just as it is fitted to Mercedes cars. The listing does not state the car model or year, so we do not give them here and match the part by its numbers.
Where to find the numbers on an ABS pump
Below are the numbers as they appear on the labels, together with the single-string form used in catalogues:
- A 212 431 00 00 (catalogue format: A2124310000), Mercedes number stamped on the hydraulic block,
- 0 265 255 843 (catalogue format: 0265255843), hydraulic block manufacturer's number,
- 0 265 956 094 (catalogue format: 0265956094), control unit number.
Check the numbers on your pump and compare them with those above. If any of them differs, contact us before ordering.
What ABS problems can point to
- the ABS stops working, although basic braking usually remains functional,
- the brake pedal pulses or feels uneven for no obvious reason,
- brake fluid leaks from the hydraulic block, which requires immediate action,
- the ABS warning light comes on together with the stability control warning light.
It is worth reading the fault codes and checking the sensor wiring before replacement. Fitting and bleeding the brake system are usually carried out by a garage with the right equipment.
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 module, depending on the engine, year of manufacture and drivetrain. The most reliable reference is the number on the original pump. |
| Does a lit ABS warning light always mean a faulty pump? |
| No. Read the fault codes first, because the cause may be a wheel sensor, its wiring or too low a supply voltage. |
| Can I send a photo for a compatibility check? |
| Yes. Contact us and send a photo of the numbers on your original pump, and we will help you check whether this module will fit. |
| What condition is this ABS module in? |
| It is an original recycled part in good condition, checked by us. Warranty details are in the product features table. |
Not certain this is the right module? Send us the numbers from the label on your pump and we will help you compare them.