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 TRW 5N0614109AD 54085772E 17618848 17618948A
Vendors's code: 5N0614109AD
Product code: D6A2-38473
Barcode:
Code 39:
ISBN:
€406.50
Price
€406.50
€500.00
Price
€500.00
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ABS pump and control module Audi TRW 5N0614109AD 54085772E 17618848 17618948A
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ABS pump 5N0614109AD - how do you confirm it fits your car?
Compare 5N0 614 109 AD with the number on your part, then go through the three TRW numbers on the unit label. On offer is a used, working TRW unit from an Audi, sold with its control module.
TRW ABS unit 5N0614109AD - label with number 54085772E
Pump 5N0614109AD belongs to a family of which we have as many as 10 other versions in the shop, differing in their final letters. A single-character difference can be a sign of a different system version, so the match should cover the whole number, AD included. The TRW numbers on the label are worth comparing as a second verification step. Only when all the markings agree can you treat this item as a replacement for your part.
Markings on the TRW unit label
- 5N0614109AD - VAG number of the ABS pump (hydraulic unit), written: 5N0 614 109 AD
- 54085772E - TRW number from the unit label - 54085772E
- 17618848 - TRW number from the unit label, second in order: 17618848
- 17618948A - TRW number from the unit label, with a hyphen before the letter: 17618948-A
There are dot-punched characters on the aluminium block, but they cannot be read at the resolution of the photos; the pump motor also has a small barcode sticker. The unit label therefore remains the main source of numbers. It does not show what each TRW number refers to, so compare them in full, character by character.
When the TRW unit may need replacing
A fault in this type of component is usually signalled by:
- ABS and ESP/ASR switching off while driving,
- a valve fault reported by the module,
- an ABS lamp visible every time the engine is started.
Before ordering a replacement, check the stored faults and inspect the wheel speed sensors, fuses, electrical connectors and battery. With the part fitted, it is time to bleed the brakes; on an Audi the module usually needs coding with a diagnostic tool, and versions with ESP mostly require calibration of the steering angle sensor.
5N0614109AD - buyers' questions
| Which car is this unit suitable for? |
|---|
| An Audi running a part with identical markings. The model does not matter here - what counts is matching numbers. |
| Is the unit genuine? |
| Yes - genuine TRW, used, working. The warranty period is given in the product features table. |
| Which number should I start comparing with? |
| VAG number 5N0 614 109 AD with the AD ending. Treat the three TRW numbers as a supplement and compare them in full. |
| Does the module need coding after fitting? |
| Usually, yes - on VW and Audi cars the control module is coded with a diagnostic tool after replacement. |
Before you order, send us a photo of the label on your unit or your VIN - we will compare the markings with this item.
