Description
BSM Delphi R02-00 Citroën Peugeot. The unit is fully functional. It may have a cracked mounting tab on the housing which does not affect functionality.
This BSM (Built-In System Module / fuse and relay box) is a direct-fit electrical control unit commonly fitted to a range of Stellantis Citroën and Peugeot models. Supplied as a fully functional unit, it is frequently searched by part numbers and reference codes, making it ideal for professional workshops and DIY mechanics who need a reliable replacement part to restore vehicle electrical systems quickly.
Technical Information
Manufacturer: Delphi / Siemens (as referenced in listing)
Model: Peugeot 5008 I; Citroën C4 Picasso; Citroën C5 X7; Peugeot 407
Product Codes: R02-00; BSM R02-00
Additional Numbers: 9664705980; 9807028580; 6500FQ; 6500HK; R02-00
Compatibility Notes
The unit is used on various Citroën and Peugeot models from the Stellantis range. Customers and technicians commonly identify this part by OE numbers listed above. Compatibility typically depends on the exact body and electrical equipment version, so verify the referenced part numbers against the vehicle’s existing unit before installation.
Installation Recommendations
- Ensure the ignition is off and disconnect the vehicle battery (negative terminal) before starting work.
- Locate the BSM unit—usually positioned in the engine bay under a protective cover or near the main fuse box. Remove surrounding covers to access the unit.
- Carefully release and unplug all electrical connectors. Note connector positions and locking tabs to avoid damage during removal.
- Remove mounting bolts and lift the old unit out. Inspect connectors and wiring for corrosion or heat damage and clean if necessary.
- Install the replacement unit, secure mounting bolts, reconnect connectors, replace covers, and reconnect the battery.
- After fitting, perform vehicle checks: verify power to circuits, check for fault codes, and confirm operation of lights, wipers, central locking, and other functions controlled by the BSM. A diagnostic tool may be required to clear fault codes or perform adaptations.
Most Common Failure Reasons
- Environmental Damage: Water ingress and corrosion at connectors or on the PCB are frequent causes of failure in roadside-installed modules.
- Heat And Vibration: Long-term exposure to engine-bay heat and vibration can cause solder joints or electronic components to fail.
- Connector Problems: Loose, corroded, or damaged connectors lead to intermittent faults or loss of function.
- Age And Wear: On higher-mileage or older vehicles the module can fail after years of service—usually manifesting as multiple electrical faults rather than a single symptom.
- Physical Damage To Housing: Mounting tab cracks (as noted) usually do not affect function but can allow movement that increases stress on connectors over time.
This unit is suited for mechanics and competent DIYers who are comfortable working with vehicle electrical systems. When installed correctly and checked with diagnostic equipment where necessary, it restores reliable operation of the vehicle’s electrical circuits controlled by the BSM.
