Description
Product Overview
The Bosch ABS/ESP control module with integrated pump is a direct-fit assembly for Citroën C4 and Peugeot 307 models. It combines the electronic control unit and hydraulic pump to manage Anti-Lock Braking (ABS) and Electronic Stability Program (ESP) functions. Supplied with a piece of wiring harness to simplify installation and connector transfer.
Key Features
- Direct-fit Bosch ABS/ESP control module and pump assembly
- Includes a section of wiring harness for connector continuity
- Restores ABS and ESP functionality for safer braking and stability control
- Commonly referenced by OE and Bosch part numbers for quick identification
Compatibility
Designed for Citroën C4 and Peugeot 307 vehicles. Always verify compatibility by checking the vehicle VIN and the referenced part numbers before ordering. Common reference numbers include 9663241380, 0265235235 and 4541Q7.
Symptoms Of Failure
Typical indications of a failing ABS/ESP module include illuminated ABS or ESP warning lights, loss of anti-lock braking or stability control assistance, intermittent pump noise, unusual brake pedal feel, and diagnostic trouble codes related to hydraulic or electrical faults.
Replacement & Installation
This replacement suits professional workshops and experienced DIY mechanics. Summary of the common install procedure:
- Disconnect the vehicle battery and wait before starting work on the electrical system.
- Locate the ABS module (typically near the brake master cylinder or in the engine bay) and remove protective covers.
- Label and disconnect electrical connectors and brake lines; capture any leaking brake fluid.
- Unbolt the module assembly and remove it with its bracket and wiring piece.
- Fit the replacement unit, reconnect hydraulic lines and electrical connectors, and secure all fasteners to the correct torque.
- Bleed the brake system thoroughly to remove air from the hydraulic circuit and restore correct pedal feel.
- Use an OBD/diagnostic tool to clear fault codes. On some vehicles, registration or coding of the new ABS/ESP module may be required and should be carried out by a qualified technician.
Follow safety precautions: avoid contaminating brake fluid, use correct seals and torques for hydraulic fittings, and verify system operation after completion.
Why Failures Occur
Failures commonly result from moisture ingress, corrosion, electrical faults, or long-term hydraulic wear. The risk increases on high-mileage vehicles and those exposed to road salt, standing water or harsh environments. The pump, valves and electronic components can deteriorate over time.
Technical Information
- Manufacturer: Bosch
- Model: Citroën C4; Peugeot 307
- Product Codes: 9663241380, 0265235235
- Other Numbers: 9661887180, 4541Q7, 4541Q8, 4541FV
