Description
Overview
The BSM B2 DELPHI (Body System Module) for Citroen and Peugeot is an electrical control module identified by part number 9657608880. This used unit is offered with a warranty of functionality and may show cosmetic damage to mounting tabs that does not affect operation.
Function
The BSM controls multiple vehicle electrical circuits including exterior and interior lighting, central locking, power windows, windshield wipers, dashboard instrumentation and climate-related actuators. It functions as a centralized relay/fuse and logic interface between the wiring harness and vehicle subsystems, coordinating signals and power distribution to ensure reliable operation of convenience and safety features.
Replacement & Installation
Replacement normally requires disconnecting the negative battery terminal, gaining access to the BSM location (commonly mounted in the engine bay fusebox or under the dashboard depending on model), unplugging connectors, removing retaining clips or screws and fitting the replacement module. Basic hand tools are usually sufficient. Note: some vehicles may require module registration, coding or initialization with a diagnostic tool after installation; consult the vehicle service manual or a compatible diagnostic device when in doubt.
Common Failure Modes & Service Life
BSM failures are often caused by moisture ingress, connector corrosion, thermal stress or mechanical vibration. Symptoms can include intermittent or total loss of lights, malfunctioning central locking, warning lights on the dashboard or erratic operation of convenience systems. Service life varies with vehicle use and environment; regular inspection of connectors and seals helps prevent premature failure.
Compatibility & Notes
This module is identified by product codes 9657608880, 6500Y1 and 6500Y3 and is designed for use in PSA Citroen and Peugeot vehicles. Always verify exact fitment and electrical compatibility with your vehicle using the part numbers and VIN before purchase. The seller states the unit is used but guaranteed functional; cosmetic damage to mounting tabs may be present and does not impact electrical performance.
Technical Information:
Manufacturer: DELPHI
Model: Citroen, Peugeot
Product Codes: 9657608880, 6500Y1, 6500Y3
Other Numbers: Verify vehicle-specific cross-references and VIN compatibility before ordering.
Recommendation
Choose the BSM B2 DELPHI 9657608880 to restore or maintain the electrical reliability of your vehicle. If you are unsure about fitment or require help with coding/initialization, contact a qualified technician or our technical support for assistance.
