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 A6394460114 0265220003 0273004089
Vendors's code: 0265220003
Product code: A6394460114
Barcode:
Code 39:
ISBN:
€121.95
Price
€121.95
€150.00
Price
€150.00
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ABS pump Mercedes Bosch A6394460114 0265220003 0273004089
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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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What does number A6394460114 on an ABS pump mean?
Used original ABS module with number A6394460114 for Mercedes. Confirm compatibility with the number from your original pump.
Used Mercedes ABS pump with number A6394460114
ABS module A6394460114 is used and has been inspected before sale. It is intended for Mercedes cars, but whether it fits is decided by comparing the numbers with the original part in your car. The listing does not state the car model or year, so we do not give them here and match the part by its numbers.
Numbers and markings on the ABS pump
Below are the numbers as they appear on the labels, together with the single-string form used in catalogues:
- A 639 446 01 14 (catalogue format: A6394460114), Mercedes number stamped on the hydraulic block,
- 0 265 220 003 (catalogue format: 0265220003), hydraulic block manufacturer's number,
- 0 273 004 089 (catalogue format: 0273004089), control unit number.
Compare the numbers with the original pump in your car, and if any of them differs, write to us before buying.
What ABS problems can point to
- the brake pedal pulses or feels uneven for no obvious reason,
- the ABS activates for no reason during normal braking,
- the ABS warning light comes on together with the stability control warning light,
- the ABS switches itself off shortly after the engine is started.
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
| Which car model does this pump fit? |
|---|
| The listing does not state a model or year, so confirm compatibility with the number from the original pump in your car, or send us a photo of it. |
| 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. |
| 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.
