Description
BSM DELPHI R05-00 for CITROËN and PEUGEOT vehicles. Unit tested and is fully functional. It may have a cracked mount on the housing which does not affect function.
Description
This genuine Delphi BSM (Body System Module) R05-00 is a direct-fit control unit used on a range of Citroën and Peugeot models. The module combines relay and fuse functions with body/comfort electronics, controlling circuits such as central locking, interior and exterior lighting, wipers, and other vehicle convenience features. This replacement unit is a cost-effective option for workshops and DIY mechanics who need an OEM-level module that restores full functionality without the long lead times of new parts.
Key Benefits
- OEM Delphi hardware designed for PSA platforms — reliable integration with original wiring and connectors.
- Direct fit for listed Citroën and Peugeot models (see Technical information below).
- Economical alternative to a new module while maintaining factory functionality.
- May arrive with external housing damage (cracked mount) that does not affect electrical performance.
How It Works
The BSM serves as a centralized distribution and control unit for many low-voltage systems. It monitors inputs (switches, sensors) and drives outputs (relays, lamps, actuators). Proper function depends on clean connector contacts and secure mounting to avoid vibration and moisture exposure.
Replacement Procedure
Typical replacement steps for experienced technicians or competent DIYers:
- Disconnect the negative terminal of the battery before starting work.
- Locate the BSM — depending on the model it is usually found in the engine bay fuse area or under the dashboard/footwell behind a protective cover.
- Remove any trim or covers to access the unit. Take photos of connector positions if needed to ensure correct reinstallation.
- Unplug electrical connectors using proper release tools; avoid pulling on wiring.
- Remove mounting screws or clips and extract the unit. Inspect connectors and harness for corrosion or damage.
- Install the replacement unit, secure mounting, reconnect connectors, and reassemble covers. Reconnect the battery as the final step.
Installation Recommendations
- Always disconnect the battery before removal to prevent short circuits and module damage.
- Inspect connector pins and the housing sealing surfaces for corrosion or water ingress; clean and apply dielectric grease if appropriate.
- If fuses or relays are mounted in or transferred from the old unit, confirm correct ratings and transfer them carefully.
- Test all affected functions (locking, lights, wipers, etc.) after installation to confirm correct operation.
Why This Part Commonly Fails
Common causes of BSM failure include moisture ingress, corrosion of connector pins, thermal stress from repeated heating cycles, and internal component fatigue (solder joints or relays). Mechanical damage to mounting points is frequently cosmetic and does not necessarily impair electrical function, as noted above.
Technical information
- Manufacturer: Delphi
- Model: BSM R05-00
- Product Codes: 9664706280, 9807028880
- Additional Numbers: 6500HH, 6500FT, 6500KQ
- Compatible Models (examples): Citroën Berlingo (B9), Citroën C4, Peugeot 308, Peugeot Partner Tepee
Notes for Mechanics and DIYers
This unit is intended for professional fitment or for experienced enthusiasts comfortable with electrical diagnostics and safe battery disconnection procedures. If the vehicle exhibits symptoms such as intermittent lighting, central locking faults, or multiple fused circuits, the BSM is a likely suspect. Always verify connector integrity and harness condition when diagnosing to avoid replacing a module unnecessarily.
