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 W212 Bosch A2124314712 0265236359 0265951572
Vendors's code: A2124314712
Product code: 0265951572
Barcode:
Code 39:
ISBN:
€162.60
Price
€162.60
€200.00
Price
€200.00
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ABS pump Mercedes W212 Bosch A2124314712 0265236359 0265951572
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When is ABS pump A2124314712 the right choice for your Mercedes W212?
Used ABS pump with control unit, number A2124314712, inspected before sale. Matched by the numbers on the block and sticker.
Mercedes W212 ABS pump: numbers A2124314712 and 0265236359
This module is made by Bosch. ABS pump A2124314712 is sold together with its control unit, just as it is fitted to Mercedes cars. According to the listing, the pump comes from the Mercedes W212 model.
Where to find the numbers on an ABS pump
The numbers as written on the labels and as a single string, the way catalogues list them:
- A 212 431 47 12 (catalogue format: A2124314712), Mercedes number stamped on the hydraulic block,
- 0 265 236 359 (catalogue format: 0265236359), hydraulic block manufacturer's number,
- 0 265 951 572 (catalogue format: 0265951572), control unit number.
The full numbers matter, including their endings. If in doubt, send us a photo of your pump.
Symptoms of a faulty ABS pump or control unit
- the pump motor switches on at unusual moments or runs louder than usual,
- brake fluid leaks from the hydraulic block, which requires immediate action,
- the ABS switches itself off shortly after the engine is started,
- on a slippery surface the wheels lock up noticeably sooner than they used to.
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 pump and the control unit sold separately? |
|---|
| In this listing they are a single module: a hydraulic block with the pump and valves, with the control unit attached to it. |
| 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. |
| Do the brakes need bleeding after replacing the module? |
| If the brake lines are disconnected during fitting, the system must be bled. The fault codes in the control unit usually need to be cleared as well. |
| What condition is this pump in? |
| It is a used original part, inspected before sale. You will find the warranty period 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.
