Bosch 5.3 ABS / ESP Pump Module Faults – Testing & Repairs

Bosch 5.3 ABS / ESP Pump Control Module Problems
The Bosch 5.3 ABS Pump Controller also controls the traction control (ESP) system and is a very common failing part and found fitted to a wide range of vehicles from 1994 to 2006. The ABS Pump has many names and is often referred to as: ABS Pump, ABS ECU, ABS Module, ABS Controller, ESP Pump, ESP ECU, ESP Module and ESP Controller – In instances like this when the ABS / ESP systems are combined, they are all referring to the same one unit.

The Bosch 5.3 ABS Controller has an external power source to the ABS pump motor which is mounted on top of the hydraulic valve block. The ABS unit has since been upgraded on newer vehicles with the Bosch 5.7 and now the Bosch 8.0 ABS pump which has an internal power source to feed power up to the ABS pump motor.

Below is a list of the common vehicles we’ve found fitted with the Bosch 5.3 ABS pump unit.

Common Bosch 5.3 ABS Pump Faults
Faults with this type of unit can very quite a bit from vehicle to vehicle and it all depends on how the unit has failed. We’ve been repairing these units for so long now we’ve practically seen every type of fault possible with Bosch ABS controllers and below are just some of the most common faults we’ve seen when the ABS pump fails:

• ABS Light On
• Traction Light On
• Handbrake Light On
• Steering Light On
• Speedo Not Working
• Wheel Speed Sensor Faults
• No Communication via OBD
• Pressure Sensor Faults
• Brakes Juddering

When the ABS unit has failed, some dealers and workshops will advise on a new replacement part which will come with a 12 month warranty but the cost of new parts can be very expensive and will need programming at an additional cost. Second hand used ABS controllers are not recommended because they come with a limited 30-90 day warranty and being such a common failing part there is no real guarantee how long it will last – also the second hand used part will also require reprogramming at an additional cost.

Our Bosch 5.3 ABS / ESP Pump Control Module Repair Service
We’re able to fully test and remanufacture this type of ABS pump. We offer a fast, efficient and an affordable repair solution using new genuine OEM components to ensure that each and every rebuilt ABS module meets & exceeds OE specifications. All of our repaired ABS ECU’s come with a Lifetime warranty and will not require coding when refitting back to the vehicle. – Making our solution the preferred choice for garages and workshops around the world!

We also offer a professional diagnosis and fitting service if required.

Below we have compiled an extensive list of part numbers we’ve seen associated to the Bosch 5.3 ABS pumps. If you have an ABS fault or have any queries, please call us on 0203 815 9441 and we’d be happy to assist you.

Ajaz

Ajaz is a seasoned automotive electronics engineer with deep expertise in remanufacturing vehicle electronics. He has developed skills in all areas of the automotive field, from rebuilding hydraulic steering components, and mechanical gearboxes and reworking intricate vehicle electronics. Ajaz also acquired Bodyteq, a London-based vehicle bodyshop where he has developed extensive knowledge in automotive refinishing.

Alongside his automotive career, Ajaz has built a career in the IT industry, gaining accredited certification as an AWS Certified Cloud Practitioner, Cloud Architect, and Search Engine Optimisation (SEO) specialist.