Description
Overview
The ABS/ESP ECU 0265950072 (4541C8) is a control module with an integrated ABS pump and hydraulic unit designed for Citroën Xsara Picasso vehicles. Manufactured by Bosch for the PSA Group, this module manages anti-lock braking (ABS) and the electronic stability program (ESP) to maintain vehicle control under braking and slippery conditions. It is commonly searched by part number and suited for professional workshops and experienced DIY mechanics.
Compatibility
Fits Citroën Xsara Picasso models (PSA Group: Citroën/Peugeot). Always verify compatibility with your vehicle VIN and OEM part numbers 0265950072 and 4541C8 before purchase to ensure a correct match.
Function And Benefits
This unit combines an electronic control unit with a hydraulic pump and valve block to modulate brake pressure during ABS and ESP interventions. Restoring a faulty module returns proper anti-lock braking, improves directional stability, and prevents wheel lock-up under heavy braking, contributing directly to active safety.
Common Failures And Causes
Typical failure causes include moisture ingress and connector corrosion, pump motor wear, hydraulic valve faults or blockages, and internal electronic component failure. Symptoms to watch for are ABS or ESP warning lights, reduced braking performance, unusual noises from the pump assembly, or loss of stability control functions.
Replacement And Installation Notes
Replacement should be performed by qualified technicians or experienced DIY mechanics. Typical steps: disconnect the battery, secure the vehicle, access and remove the ABS/ESP unit, disconnect electrical connectors and brake lines as required, fit the replacement unit and reconnect wiring and hydraulics, then perform a complete brake bleed. A diagnostic tool (for example DiagBox/Lexia or another compatible scanner) is usually required for coding/adaptation and to clear fault codes after installation.
Service Life
Service life varies depending on driving conditions and maintenance. Proper protection from moisture and regular brake system maintenance can extend the unit’s lifespan. Replace promptly if faults appear to maintain braking safety.
Technical Information
- Manufacturer: Bosch
- Model: Citroën Xsara Picasso (PSA Group: Citroën/Peugeot)
- Product Codes: 0265950072
- Other Numbers: 4541C8
Ordering Tips
Search by part number 0265950072 or 4541C8 for the fastest match. If in doubt, provide your vehicle VIN to confirm fitment. Professional installation and post-installation adaptation with a diagnostic tool ensure correct ABS/ESP operation and restore full braking and stability control functionality.
