Description
Overview
Bosch ABS/ESP control module with wiring harness piece for Peugeot 307 CC and Citroën C4. Suitable for professional mechanics and competent DIYers. Often referenced by part numbers 0265950093, 4541W5 and 4541W6, this unit controls the ABS pump and electronic stability functions.
Key Functions
- Controls the ABS pump motor and modulates hydraulic pressure during braking events.
- Receives wheel speed and yaw sensor inputs to help maintain vehicle stability (ESP).
- Interfaces with the vehicle CAN bus and brake system sensors via electrical connectors.
- Includes a section of the original wiring harness for direct connection to the vehicle loom.
Replacement And Installation
Replacement should be carried out by a qualified technician or experienced DIYer with proper tools. Basic procedure:
- Disconnect the negative battery terminal to prevent electrical damage.
- Access the ABS/ESP unit (typically located near the brake master cylinder or wheel well) and remove any covers.
- Unplug electrical connectors and detach the wiring harness section supplied.
- Unbolt the unit from its mounting bracket and remove; be prepared for some brake fluid loss.
- Install the new unit, secure mounting, reconnect connectors and the wiring harness, then refill and properly bleed the brake system.
- Use a diagnostic scanner to clear fault codes and confirm ABS/ESP system operation; perform any required brake system tests.
Common Failure Modes And Symptoms
Units may fail due to moisture ingress, corrosion, electrical connector problems or internal pump/motor wear. Typical symptoms include ABS or ESP warning lights, reduced braking performance, unusual noises from the pump, or erratic activation of ABS during normal braking.
Fitment And Compatibility
Intended for PSA platforms, commonly fitted to Peugeot 307 CC and Citroën C4 variants. Always verify compatibility by checking the vehicle VIN and matching part numbers before purchase.
Technical Information
- Manufacturer: Bosch
- Model: Peugeot 307 CC; Citroën C4
- Product Codes: 0265950093, 4541W5
- Other Numbers: 4541W6
