Posts Tagged ‘audi abs ecu issues’
Saturday, July 17th, 2010


A very common fault on practically all VW’s & Audi’s is the ABS pump and controller module failing. We repair all types of ABS pumps & controller modules but this blog post in particular is about the very common Bosch 5.3 unit which is seen commonly failing on the following vehicles:
- 1996 – 2001 Audi A4, A6, S4
- 1996 – 2001 VW Passat
When it fails, the ABS light will appear on the dash and the most common faults with these units is no communication and wheel speed sensor faults. If that’s the problems you’re having then no doubt we can repair it for you, saving you £££’s on what you’d be paying if you had bought a brand new unit & because we’re repairing your own unit, you don’t have to pay to get it recoded or programmed either.. it’s all plug & play when you get it back and fully covered by our 1Yrs warranty.
Even if the fault you’re getting on your unit is not as described by us, give us a call anyway.. we try to keep these articles as accurate as possible at the time of publishing but to reduce confusion we only list the most common failures. Other faults are also:
- ABS Light On
- No Communication
- Wheel Speed Sensor Faults
- Juddering When Braking
Whatever the faults, give us a call today on 0871 2887 666 and let us quote you happy, we even carry many of the most common ABS units in stock ready to be dispatched same day.
All BOSCH ABS units start with either 0265 or 0273. If it’s an ATE ABS unit then the part numbers will start with 10 and OEM part numbers do vary. Whichever unit you’ve got, we always suggest contacting us with the full part numbers first to get an accurate quote for the cost of repairs or to find out if we’ve got a replacement unit in stock.
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Sunday, July 11th, 2010


Almost all vehicles are now fitted with ABS (Anti-Lock Braking System) and TCS (Traction Control System) to give us better stability of the vehicle. When these units fail, it doesn’t always render the vehicle non-drivable, however, it can make it unsafe to drive because believe it or not the on-board computers are constantly working to keep the vehicle moving steadily especially at higher speeds.
In some cars you can’t really feel the difference on day-to-day driving on local roads but on motorways it’s noticeable in all vehicles where the on-board ABS controller or Traction Controller isn’t working.. you’ll feel it sway a bit, it’ll become unsteady and maybe even vibrate/judder.
Audi ABS pumps are attached to the controller and are in clear view under the bonnet, normally mounted close to the passenger side suspension turret. There’s commonly two types of ABS controllers on the Audi, Bosch & ATE. The Bosch units have a part number starting with 02 (commonly 0265.. or 0273) and are 10 digits long. The ATE units have a part number starting with 10 (commonly 10.0) and are 11 digits long.
We’ve been repairing these ABS controllers & Traction control units for years now and we’re taking in at least 3-4 units a day now from private & trade customers. The most common faults we’re seeing on these on a daily basis are:
- No Communication
- Wheel Sensor Fault
- ABS / Traction Light On dash
- Flashing Red Brake Light On Dash
- Vibrations Under Breaking
- Speedo Not Working
Some people prefer replacing these units with second-hand units from breaker yards, problem with that is that this is a very common fault and almost definitely all of them will fail at one point or another so when buying a second-hand unit, you’re unaware of the history of the unit (has it previously been repaired yet or is it waiting to fail?).. once they’ve been repaired they don’t really come back or become faulty again and should last the lifetime of the vehicle.
Buying a new unit isn’t cheap at all, they start from £500+ and require programming/coding to your vehicle as well (either by a local electrician with the correct equipment) or a main dealer. You still get the same 12months warranty on a new unit, nothing special so there’s no real reason to go down this road until you’re certain your unit is beyond repair, which is very unlikely.
We remanufacture these units every day and we try to keep some of the most common part numbers readily available in stock to reduce turn around time. All units from us are pre-programmed ready to plug & play on the vehicle, meaning they do not require further programming. Always call us first prior to sending any units in and have the part numbers to hand so that we can confirm the price & turn around time. We do not take payment from you until the unit has been repaired and tested working okay & ready to come back to you & the best thing is, all our units come with the same 12months warranty.
If you do decide to send your unit in to us, we ask that you kindly send both the controller and the attached hydraulic pump so that we can fully bench test both parts of the unit. This means when removing it from the vehicle, you should remove it whole by disconnecting the communication cables and also the 4-6 hydraulic lines running into the pump. When re-fitting the unit, you will have to bleed all 4 brakes starting from the wheel furthest away from the ABS pump i.e. if the pump is located on passenger side front suspension turret, then you should begin bleeding from the driver side rear wheel.
Even if you’ve been told by others that your unit is non-repairable, don’t give up until you’ve given us a call.
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