Description
BSM Delphi L11-00 for Citroën and Peugeot vehicles. Unit tested and is fully functional. May have a cracked mounting tab on the housing which does not affect function.
Product Overview
This Delphi BSM L11-00 body control module (BSM) is a direct-fit electronic control unit commonly used on Citroën and Peugeot vehicles. Supplied with reference numbers 9661087080 and 6500CK, the unit controls multiple vehicle comfort and body functions such as interior lighting, central locking, power windows, alarm/immobilizer signals and some fuse/relay distribution. Designed for workshop installation, this unit is suitable for professional mechanics and experienced DIY enthusiasts who are familiar with vehicle electrics and PSA systems.
Key Benefits
- Direct replacement for original BSM units with matching part numbers (9661087080 / 6500CK).
- Restores central convenience functions and eliminates faults caused by a defective body module.
- Delivered tested and working; cosmetic damage to a housing mounting tab does not affect operation.
Technical Information
- Manufacturer: Delphi
- Model: BSM L11-00
- Product Codes: 9661087080, 6500CK
- Additional Numbers: 96 610 870 80
Compatibility
Commonly fitted to Citroën and Peugeot models from the PSA group. Frequently found on Peugeot 307 applications. Always check the part number printed on the original unit before ordering to confirm fitment.
Function And Typical Faults
The BSM (Body System Module) aggregates many low-voltage convenience and safety circuits. Typical symptoms of a failing BSM include intermittent or complete loss of central locking, non-working interior lights, malfunctioning power windows, electrical faults indicated by dashboard warnings, or random fuse/relay faults. Failures are most often caused by moisture ingress, connector corrosion, thermal stress, or internal electronic component degradation over time.
How To Replace
Replacement should be performed by a trained technician or an experienced DIYer comfortable with vehicle electrics. Typical replacement steps:
- Park the vehicle on a flat surface and ensure ignition is off.
- Disconnect the negative battery terminal before starting work to avoid short circuits or damage to electronics.
- Locate the BSM unit (usually under the dashboard, behind glovebox, or in the engine bay depending on model).
- Carefully release any retaining clips and unplug all connectors, noting their positions. Avoid forcing connectors or bending pins.
- Fit the replacement unit, ensuring secure mechanical mounting and correct connector seating.
- Reconnect the battery and verify basic functions (locks, lights, windows). Some vehicles may require coding or initialization for full functionality.
Installation Recommendations
Always follow manufacturer service procedures when removing and installing an electronic control unit. Disconnect the battery before any work. Inspect connector pins and wiring for corrosion or damage and repair as needed. After installation, check all related circuits and perform any required initialization or coding using a suitable PSA diagnostic tool if necessary. If you are not experienced with coding or immobilizer-related tasks, we recommend a professional workshop with PSA diagnostic equipment to complete the procedure.
Most Common Reasons For Failure
- Water Ingress Or Moisture Causing Corrosion
- Connector Corrosion Or Poor Electrical Contact
- Thermal Stress Or Component Ageing
- Electrical Surges Due To Faulty Wiring Or Failed Fuses/Relays
Notes For Mechanics And DIYers
This unit is intended for fitment by professionals and skilled amateurs. It is supplied tested and functional; however, due to the nature of vehicle electronics, ensure that wiring faults or peripheral component failures are not the root cause before replacing the BSM. Replacing the BSM without addressing underlying issues (water leaks, short circuits) may result in repeat failures.
