Description
BSM Delphi R02-00 Citroën/Peugeot. The unit is fully functional. Some of the mounting tabs on the housing may be cracked, which does not affect functionality.
This BSM (engine control/power distribution module) is a direct-fit electronic control unit commonly used on several Citroën and Peugeot models. It manages power distribution and critical engine-related circuits such as fuel pump relays, ignition control feeds and various sensor supplies. Supplied with original manufacturer product numbers, this unit is suitable for professional workshops and experienced DIYers who search by OE codes like 9664705980 or 9807028580.
Technical Information
- Manufacturer: Siemens / Delphi
- Model: BSM R02-00
- Product Codes: 9664705980, 9807028580
- Additional Numbers: 6500FQ, 6500HK, R02-00
Compatible Models
Fits multiple Stellantis vehicles including Peugeot 5008 I, Peugeot 407 and Citroën C4 Picasso and Citroën C5 X7 (check part numbers against vehicle build). Compatibility is often confirmed by the OE code printed on the unit rather than model name alone.
Replacement Procedure
- Disconnect the negative battery terminal before starting to avoid electrical damage.
- Locate the BSM unit in the engine bay or inner wing area depending on the model, remove any trim or airbox obstructing access.
- Carefully release electrical connectors and retainers; inspect connectors for corrosion or bent pins.
- Unbolt the module, transfer any brackets or seals as required, mount the replacement and reconnect connectors firmly.
- Reconnect the battery, clear fault codes and verify system operation. On some vehicles the replacement unit may require programming or immobilizer synchronization—perform these steps with appropriate diagnostic equipment if needed.
Installation Recommendations
- Use proper hand tools and avoid damaging connector plastic tabs; cracked housing mounts are cosmetic but connectors must seat solidly.
- Inspect and clean mating connectors and apply dielectric grease to prevent future corrosion.
- Check ground points and fuses related to the module before assuming unit failure—poor ground or blown fuses can mimic BSM faults.
- If programming is required, ensure diagnostics and immobilizer tools are compatible with Stellantis systems.
- Perform a full system check after installation: start sequence, fuel pump activation, lights and other affected circuits.
Most Common Failure Reasons
BSM failures are typically caused by environmental and age-related factors rather than sudden electronic defects. Frequent causes include moisture ingress and connector corrosion, thermal stress and degraded solder joints, damaged relays or transient voltage spikes. Physical damage to the housing or mounting points is usually cosmetic and does not impair operation, but repeated vibration and water exposure accelerate internal wear.
For mechanics and competent DIYers this unit offers a practical replacement option when OE codes match. Always verify part numbers and follow safe workshop practices during removal and installation to ensure reliable operation.
