Common Mercedes C-Class (W204) ABS Pump Faults and Symptoms

The ABS pump fitted to the Mercedes C-Class (W204) is a critical component of the braking system. It is designed to ensure safe and stable control during emergency stops and adverse driving conditions. Unfortunately, these pumps are known to suffer from internal faults that can lead to warning lights on the dashboard and impaired braking performance. The most common issue is the appearance of diagnostic fault code 5001 – Control unit internal fault, which is a clear sign of failure within the ABS module.

1. Fault Code: 5001 – Control Unit Internal Fault

When this fault code is logged, it indicates that the ABS pump’s electronic control unit has developed an internal failure. This may result in ABS and traction control warnings on the dashboard, and in some cases, can affect the overall performance of the braking system. Because this is an internal control fault, it cannot be resolved by clearing the code and typically requires professional repair of the ABS unit.

This issue is frequently reported on Mercedes C-Class (W204) models and, if left unresolved, can compromise braking safety and system reliability.

Mercedes C-Class (W204) ABS Pump Repair – Essex Recons

At Essex Recons, we specialise in repairing Mercedes ABS pumps suffering from the 5001 internal fault code and related issues. Our expert technicians use advanced diagnostic equipment and precision repair techniques to restore the ABS control unit back to full working order, providing a cost-effective alternative to replacement. Every repaired pump is rigorously tested before return and supplied with warranty for complete peace of mind.

If your Mercedes C-Class (W204) is affected by ABS pump failure, contact Essex Recons today for a fast, professional, and reliable repair service.