This ATE ABS/ESP pump assembly with a short section of wiring is designed for Citroén C5 II applications. The unit combines the electronic control module and hydraulic pump that support Anti-lock Braking System (ABS) and Electronic Stability Program (ESP) functions. Supplied with the listed part numbers, it is often located and purchased by its product code.

What The Unit Does

The ABS/ESP pump modulates hydraulic pressure to individual wheel brakes during ABS events and provides the hydraulic actuation required by the ESP system to stabilise the vehicle. The control module interprets wheel speed sensors and other inputs to operate valves and the pump motor, preventing wheel lock and helping maintain directional control.

Common Symptoms And Causes Of Failure

Typical signs that this module is failing include ABS or ESP warning lights on the dashboard, intermittent braking faults, unusual noise from the pump motor, and loss of ABS/ESP functionality. Common causes are electrical faults (damaged wiring or connectors), internal pump motor wear, valve blockage, and corrosion or water ingress affecting the electronic control unit. Failures are generally associated with long service life, environmental exposure, or impact damage.

Replacement And Installation Notes

Replacement should be carried out by professional technicians or experienced DIYers who have access to appropriate diagnostic and bleeding equipment. General replacement steps: disconnect the vehicle battery, access and unbolt the ABS/ESP module, carefully disconnect brake lines and electrical connectors, fit the replacement unit and wiring section, then perform a full brake system bleed and ABS/ESP system bleed using a compatible diagnostic tool. After installation, clear fault codes and run system calibrations as required to restore proper ABS/ESP operation.

Fitment And Compatibility

Designed for Citroén C5 II (second generation) models and often cross-referenced by part numbers. Always verify compatibility by comparing the unit’s product codes with the vehicle’s OEM references before ordering. This assembly is aimed at mechanics and DIY car owners who search by part number or require a direct-fit ABS/ESP module with wiring included.

Technical Information

• Manufacturer: ATE
• Model: Citroén C5 II
• Product Codes: 9656419780, 10.0960-1146.3, 10.0206-0188.4
• Other Numbers: 4542F0, 4542F1, 4541G1, 4541G2

Included Items: ABS/ESP Control Module And Pump With A Short Section Of Wiring (as Supplied). Search By Product Number For Fast Identification.

The ATE ABS/ESP pump and control unit is designed for Citroën C5 II vehicles. It regulates hydraulic brake pressure and wheel-speed modulation to maintain effective ABS and ESP operation. This part is commonly referenced by OE numbers 9656419780, 10.0960-1146.3 and 10.0206-0188.4, and by reference codes 4542F0, 4542F1, 4541G1 and 4541G2.

Features & Benefits

• Direct-fit unit engineered to meet OE specifications for reliable integration.
• Restores ABS/ESP functionality and braking stability for safer vehicle control.
• Compatible with vehicles identified by the listed part and reference numbers.
• Designed for professional workshops and experienced DIY mechanics familiar with ABS systems.

When To Replace

Common indications that the ABS/ESP pump or control unit needs replacement include illuminated ABS or ESP warning lights, a pulsating or soft brake pedal under braking, or persistent diagnostic trouble codes related to the ABS pump, valves or control electronics. Typical failure causes are pump motor or electronic faults, stuck hydraulic valves, corrosion or moisture ingress.

Replacement Procedure

Typical replacement steps: perform a full diagnostic scan to identify related fault codes; disconnect the battery and relieve hydraulic pressure; disconnect electrical connectors and hydraulic lines; remove mounting fasteners and extract the old unit; install the replacement unit, reconnect lines and connectors, refill with the manufacturer-recommended brake fluid; then perform an ABS bleed and electronic initialization with a compatible diagnostic tool. Some vehicles may require coding/calibration after installation. Always follow workshop manuals and safety procedures when working on the braking system.

Technical Information

• Manufacturer: ATE
• Model: Citroën C5 II
• Product Codes: 9656419780; 10.0960-1146.3; 10.0206-0188.4
• Additional Numbers: 4542F0; 4542F1; 4541G1; 4541G2

Fitment note: Verify compatibility with the vehicle VIN and OE part number before ordering. Proper bleeding of the brake system and electronic initialization with a diagnostic tool are required after installation to ensure safe operation.