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 5A7F097 5A7F099
Vendors's code: 5A7F09701
Product code: 5A7F099
Barcode:
Code 39:
ISBN:
£308.95
Price
£308.95
£380.01
Price
£380.01
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ABS pump BMW ATE 5A7F097 5A7F099
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What does number 5A7F097 on an ABS pump mean?
Used ABS pump with control unit, number 5A7F097, inspected before sale. Matched by the numbers on the block and sticker.
BMW ABS pump 5A7F097: hydraulic module with control unit
If the ABS warning light is on in your BMW, one possible cause is the hydraulic module or its control unit. ABS pump 5A7F097 is a used original part, inspected before sale. 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
The numbers as written on the labels and as a single string, the way catalogues list them:
- 5A7F097, BMW number in short form, without the group prefix,
- 5A7F099, BMW number in short form, without the group prefix.
Compare the numbers with the original pump in your car, and if any of them differs, write to us before buying.
What can point to an ABS pump failure
- the ABS warning light comes on after the engine is started and stays on,
- valve or pump motor faults are stored in the control unit memory,
- the ABS activates for no reason during normal braking,
- 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
| What is the difference between numbers 5A7F097 and 5A7F099? |
|---|
| The module carries several numbers, because it is identified both by the car brand and by the manufacturer of the block and control unit. When matching the part, compare all the numbers. |
| 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. |
| 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.
