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 W204 ATE A2044311912 10021204154 A2049012400
Vendors's code: A2049012400
Product code: A2044311912
Barcode:
Code 39:
ISBN:
€284.55
Price
€284.55
€350.00
Price
€350.00
Ask about the product
ABS pump Mercedes W204 ATE A2044311912 10021204154 A2049012400
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How to check whether ABS pump A2044311912 fits your Mercedes W204
Used ABS pump with control unit, number A2044311912, inspected before sale. Matched by the numbers on the block and sticker.
Mercedes W204 ABS pump A2044311912: hydraulic module with control unit
The hydraulic block and control unit of this ABS pump form a single module that works with the wheel speed sensors in Mercedes W204 cars. You will find number A2044311912 on the label, and the full set of numbers is given in the description below. According to the listing, the pump comes from the Mercedes W204 model.
Part number A2044311912 and related numbers
The numbers from the listing, as written on the labels and as a single string:
- A 204 431 19 12 (catalogue format: A2044311912), Mercedes number stamped on the hydraulic block,
- 10.0212-0415.4 (catalogue format: 10021204154), hydraulic block manufacturer's number,
- A 204 901 24 00 (catalogue format: A2049012400), Mercedes control unit number.
Matching by number is more reliable than matching by car model. Compare all the numbers and ask us if any of them does not match.
What ABS problems can point to
- the ABS stops working, although basic braking usually remains functional,
- 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.
First check the wheel sensors, their wiring and the supply voltage. Only a fault code pointing to the module justifies replacing the pump. After fitting, clear the fault codes and, if necessary, bleed the brake system.
Questions and answers
| Where do I find number A2044311912 on my pump? |
|---|
| The numbers are stamped or printed on the aluminium hydraulic block, and the control unit has a separate sticker. Take a close-up photo of both places in good light. |
| 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. |
| 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. |
Want to check before you buy? Send a photo of the block and sticker on your ABS pump and we will check that the numbers match.
