Description
BSM control unit suitable for Peugeot 508 vehicles.
Description
This BSM (Body System Module) control unit is an original-equipment style module for Peugeot 508. It manages many of the vehicle’s body electrical functions and is commonly referenced by part numbers 9674921980, 9807428180, 6500KH and code Z03-00. This listing is aimed at professional technicians and DIY enthusiasts who service Peugeot/Citroën vehicles and often search by part number to find the correct replacement.
Function And Application
The BSM is the central unit for multiple comfort and safety electrical functions on supported Peugeot models. Typical responsibilities include centralized locking, interior lighting, indicator/warning lamps, wiper and washer control, window and mirror functions, and managing inputs from switches and sensors in the passenger compartment. Replacing a faulty BSM restores correct operation of these systems when they are malfunctioning due to a failed module.
Technical Information
- Manufacturer: Stellantis (Citroën/Peugeot)
- Model: Peugeot 508
- Product Codes: 9674921980, 9807428180, 6500KH, Z03-00
- Additional Numbers: 967492.1980 / 9807428180 (cross-references commonly used by parts databases)
Replacement Procedure (Overview)
Typical replacement steps for a BSM unit on a Peugeot 508:
- Disconnect the negative battery terminal before any work to prevent short circuits and protect electronic modules.
- Gain access to the BSM—on many PSA vehicles the module is located behind trim panels in the passenger footwell or behind the glovebox. Remove necessary trim fasteners carefully to avoid damage.
- Unplug all electrical connectors and remove mounting screws or bolts securing the unit.
- Install the replacement unit, secure it with mounting hardware, and reconnect the connectors, ensuring firm seating and no bent pins.
- Reconnect the battery and verify basic electrical functions. Note that some functions may require further initialization or coding.
Installation Recommendations
- Always disconnect the battery before removal and follow the vehicle manufacturer’s instructions for airbag and electrical system safety.
- Inspect connector pins and wiring for corrosion or damage before installing the new unit; poor connections are a common cause of recurring faults.
- After fitting, check all body electrical functions (central locking, lights, wipers, windows, indicators) and run a diagnostic scan to confirm no stored fault codes remain.
- For tasks involving coding or cloning of module data, use PSA-capable diagnostic tools. If you are not equipped with OEM-level tools, consider professional assistance for programming.
Why This Part Fails
Common causes of BSM failure include water ingress or moisture causing corrosion, electrical surges or poor battery connections producing voltage spikes, connector corrosion, and damage from accidents or improper handling. Symptoms of a failing BSM include intermittent or complete loss of central locking, inoperative interior lighting, non-functioning indicators or wipers, and multiple unrelated electrical faults or warning lights.
Notes For Buyers
This unit is frequently searched for by its part numbers (9674921980, 9807428180, 6500KH, Z03-00). Ensure the listed codes match the part number required for the vehicle before purchase. Proper diagnosis is recommended to confirm the BSM is the root cause of the vehicle’s electrical faults.
Recommended Service
If coding or adaptation is necessary after replacement, have the work performed by a technician with PSA diagnostic capability to ensure full functionality and correct integration with vehicle security and comfort systems.
