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 and control module Audi Bosch 8R0614517AT 0265236439 8R0907379S 0265951754
Vendors's code: 0265236439
Product code: 8R0614517AT
Barcode:
Code 39:
ISBN:
€325.20
Price
€325.20
€400.00
Price
€400.00
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ABS pump and control module Audi Bosch 8R0614517AT 0265236439 8R0907379S 0265951754
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8R0614517AT - is this the number on your ABS pump?
If the block of your unit bears the marking 8R0 614 517 AT and the control module 8R0 907 379 S, this listing may be the right one. It is a used, working Bosch assembly for Audi, matched by numbers only.
Bosch unit 8R0614517AT with module 8R0907379S - Audi
An important part of this assembly is the control module, which collects signals from the speed sensors of all four wheels. From them it judges whether any wheel is losing grip and, if necessary, activates the valves and the pump motor. If a sensor signal is wrong, the module usually switches ABS off and turns on the warning light. This is why the symptoms of a sensor fault are easy to confuse with a failure of the control module itself.
What is written on the block and on the module
- 8R0614517AT - VAG number of the ABS pump (hydraulic unit), stamped into the aluminium block: 8R0 614 517 AT
- 0265236439 - Bosch number of the hydraulic block (pump): 0 265 236 439
- 8R0907379S - VAG number of the ABS/ESP control module: 8R0 907 379 S
- 0265951754 - Bosch number of the control module: 0 265 951 754
The ending AT is stamped separately in the block, in larger characters than the rest of the number, and on the side of the module there is a Bosch sticker with a serial number barcode; the block bears the marking ‘ESP’. The block has the port markings HZ1, HZ2, VL, VR, HL and HR. The shop has 12 other versions of part number 8R0 614 517, so do not stop at the start of the number.
When should you suspect the unit?
A problem with the block or the electronics is usually indicated by:
- no communication with the control module during diagnostics,
- an ABS warning light that does not go out,
- a pump motor fault in the fault memory.
Before you order the part, check the fault codes, the wheel speed sensors, fuses, wires with the plug, and the battery voltage. After fitting, the system must be bled, and on cars with ESP the basic setting of the steering angle sensor is often carried out as well.
Questions about unit 8R0614517AT
| Which car is this unit intended for? |
|---|
| Audi. We do not specify a model, because the match is made by comparing the numbers on the block and the control module. |
| What condition is the part in, and what about the warranty? |
| It is genuine, used and in working order. The warranty period is given in the product features table. |
| How can I make sure before buying that it is the right part? |
| Send photos of the block with the number stamped into the aluminium and of the label or sticker on the module, or your VIN. We will compare them with this item. |
| Is the Bosch number alone enough? |
| We do not recommend that. Check Bosch number 0 265 236 439 together with VAG number 8R0 614 517 AT, because the latter defines the exact version. |
All we need is a photo of the number on the block and the module, or your VIN, and we can confirm that this is the right assembly.
