Description
Overview
This ABS/ESP control unit combines the electronic control module and Bosch ABS pump assembly used on Citroën Xsara vehicles. It manages anti-lock braking (ABS) and Electronic Stability Program (ESP) functions by processing wheel speed sensors and operating the hydraulic pump and valves to maintain vehicle stability during braking and emergency maneuvers.
Key Features
- Integrated ABS pump and ECU assembly for coordinated braking control
- Bosch Part Number: 0265950057; OEM Numbers: 9641975380, 4541C7
- Direct-fit replacement for compatible Citroën Xsara applications within the PSA group
- Controls ABS modulation, pump activation and ESP interventions to improve vehicle safety
Common Failure Modes
- Electrical faults or corroded connectors causing intermittent or permanent faults
- Water ingress or moisture-related corrosion affecting the pump motor or electronic components
- Mechanical wear of the hydraulic pump or internal valves leading to reduced pressure or pump noise
- Faults initiated by defective wheel speed sensors or damaged wiring harnesses that overload the unit
Replacement & Installation
Replacement should be performed by a qualified technician or an experienced DIYer familiar with brake systems. Typical procedure:
- Disconnect the negative battery terminal before starting work
- Locate the ABS/ESP unit (commonly near the brake master cylinder or in the engine bay) and secure the vehicle
- Label and disconnect electrical connectors; remove mounting bolts
- Remove the unit carefully. Some designs integrate hydraulic lines—observe leak-prevention and contamination control
- Install the replacement unit, reconnect electrical connectors and mounting hardware
- Bleed the brake system following manufacturer procedures to remove air from the circuit
- Use a diagnostic tool to read/clear fault codes and perform any required ESP/ABS calibration or adaptations
Technical Information
- Manufacturer: Bosch / PSA (Citroën)
- Model: Citroën Xsara
- Product Codes: 9641975380, 4541C7
- Additional Numbers: 0265950057
Fitment Notes
Always verify compatibility by matching the part numbers above with the unit currently fitted to the vehicle or by consulting a parts catalog with your VIN. While commonly fitted to Citroën Xsara models, exact fitment depends on vehicle specification and production variant.
Why Choose This Unit
A correct ABS/ESP control unit restores proper anti-lock and stability functions, eliminates related dashboard warnings when the control unit is at fault, and returns safe braking performance. Confirm part numbers before purchase and plan for diagnostic calibration after installation.
