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 BMW ATE 3451677848401 3452677848501
Vendors's code: 6778485
Product code: 6778484
Barcode:
Code 39:
ISBN:
€650.41
Price
€650.41
€800.00
Price
€800.00
Ask about the product
ABS pump BMW ATE 3451677848401 3452677848501
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€30.00
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€30.00
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(Poland)
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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Does ABS pump 3451677848401 come complete with the control unit?
Used ABS pump with control unit, number 3451677848401, inspected before sale. Matched by the numbers on the block and sticker.
BMW ABS pump 3451677848401: hydraulic module with control unit
This module is made by ATE. ABS pump 3451677848401 is sold together with its control unit, just as it is fitted to BMW 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.
Part number 3451677848401 and related numbers
Below are the numbers as they appear on the labels, together with the single-string form used in catalogues:
- 3451 6778484 01 (catalogue format: 3451677848401), BMW number of the ABS pump (hydraulic part),
- 3452 6778485 01 (catalogue format: 3452677848501), BMW 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
- valve or pump motor faults are stored in the control unit memory,
- the pump motor switches on at unusual moments or runs louder than usual,
- the ABS activates for no reason during normal braking,
- the ABS switches itself off shortly after the engine is started.
Before buying a module, read the fault codes with a diagnostic tester. A faulty wheel speed sensor or its wiring can cause the same symptoms, and in that case replacing the pump will not help. After replacement the fault codes usually need to be cleared, and if the brake lines have been disconnected, the system must be bled.
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. |
| 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. |
| Is this a new part? |
| No. We sell used original modules, each one 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.
