Description
Control Module, ABS Pump, ESP Unit, ABS Block Bosch Peugeot 307.
This used ABS/ESP control module and hydraulic pump from Bosch is a direct-fit replacement for Peugeot 307 models and is frequently referenced by part numbers 9649458080 / 0265950368 and factory codes 4541T9, 4541V0. The unit controls anti-lock braking (ABS) and electronic stability program (ESP) functions by modulating brake pressure via the integrated pump and valve block. Ideal for professional workshops and experienced DIY mechanics searching by part number, this module restores ABS/ESP functionality when the original unit shows faults or warning lights.
How It Works
The module integrates an electronic control unit (ECU) with a hydraulic pump and valve block. Wheel speed sensors feed data to the ECU, which modulates hydraulic pressure through the valve block and pump to prevent wheel lockup and to support vehicle stability interventions. When the control electronics or pump fail, the vehicle will often indicate faults through the ABS/ESP warning lamp and may revert to reduced braking assistance.
Replacement Procedure
- Park Vehicle Safely And Secure On A Level Surface; Chock Wheels.
- Disconnect The Negative Battery Terminal Before Any Work To Prevent Short Circuits And Protect Electronics.
- Locate The ABS/ESP Unit (Usually In The Engine Bay Mounted To The Bulkhead Or Inner Wing On Peugeot 307).
- Depressurize The Brake System If Necessary, Then Disconnect Electrical Connectors And Brake Lines From The Module (Use Correct Fittings And Capture Brake Fluid).
- Unbolt The Module From Its Bracket; Transfer Any Required Brackets Or Brake Line Adapters From The Old Unit To The New Unit.
- Install The Replacement Unit, Reconnect Brake Lines And Electrical Connectors, Then Refill And Bleed The Brake System According To Manufacturer Procedure.
- Use A Diagnostic Tool To Clear Fault Codes And Perform Any Required Initialization Or Pump Priming Procedures; Verify That ABS/ESP Warning Lights Remain Off During Road Test.
Installation Recommendations
Always follow safety procedures: disconnect the battery before removal, use correct torque values for hydraulic fittings, and avoid introducing air into the brake system. Replace brake fluid if contaminated and bleed the system thoroughly after installation. Verify electrical connector contacts for corrosion and ensure secure mounting to prevent vibration-related damage. After fitting, perform a full diagnostic scan and a road test to confirm proper ABS/ESP operation.
Most Common Failure Reasons
ABS/ESP modules on Peugeot 307 commonly fail due to moisture ingress and corrosion of electrical connectors or internal valve block components, electrical faults from wiring harness damage, or wear of the pump motor. Contaminated brake fluid and long-term exposure to road salt accelerate hydraulic block degradation. Symptoms include illuminated ABS/ESP warning lamp, intermittent faults, reduced braking assistance, or activation of traction control faults.
Technical Information
- Manufacturer: Bosch
- Model: Peugeot 307
- Product Codes: 9649458080, 0265950368
- Other Numbers: 4541T9, 4541V0, 265950368
Notes For Professionals And DIYers
Part numbers 9649458080 and 0265950368 are commonly used to identify this ABS/ESP module — searching by these codes or Bosch reference improves findability. Because ABS systems interact with brake hydraulics and vehicle safety systems, installation is recommended for technicians or experienced DIYers familiar with brake-bleeding procedures and diagnostic tools. After replacement, perform a full diagnostic check and road test to ensure system integrity and fault clearance.
