Description
BSI BSI04EV K04-00 Johnson Controls from Citroën C8
This BSI unit (BSI04EV K04-00) manufactured by Johnson Controls is a direct-fit body control module for select Stellantis MPV models. It is commonly referenced by multiple part numbers including 9664059080, 01 6580SA and 6580ZE, which makes it easy to find by part code. The module centralizes comfort and body electronics functions—central locking, interior lighting, wipers, indicators and many convenience circuits—so a faulty BSI causes multiple symptoms that both professional technicians and DIY enthusiasts will recognize.
For mechanics and home repairers: this product is suitable for Citroën C8 and Peugeot 807 models where the listed part numbers match. When shopping, search by BSI04EV, K04-00 or the OE codes below to locate the correct unit quickly. The description includes boot and hardware references (BOOT 28120836-4, HARD 28119248-3 C) used in assembly and replacement.
Technical Information
- Manufacturer: Johnson Controls
- Model: BSI04EV K04-00
- Product Codes: 9664059080, 01 6580SA
- Other Numbers: 6580ZE; BOOT 28120836-4; HARD 28119248-3 C
Function And Symptoms
The BSI (Body Systems Interface) manages body and comfort electronics on Citroën and Peugeot MPVs. Typical functions include:
- Central locking and remote key receiver
- Interior and exterior lighting control
- Wiper and washer control
- Indicator and hazard light control
- Communication with instrument cluster and convenience modules
Common symptoms of a failing BSI: inconsistent central locking, non-functioning lights or wipers, warning lights on the dashboard, intermittent instrument cluster faults and, in some cases, immobilizer or starting issues.
Installation Recommendations
- Disconnect The Negative Battery Terminal Before Work To Prevent Short Circuits And To Protect Sensitive Electronics.
- Locate The BSI Unit Under The Dashboard Or Behind The Glove Box Depending On Model; Remove Trim Panels Carefully To Access Mounting Screws.
- Unplug Connectors By Releasing Locks—Do Not Pull On Wiring; Inspect Connectors For Corrosion Or Bent Pins.
- Fit The Replacement Unit Securely Using Original Hardware (References Provided Above) And Reconnect All Plugs.
- After Reinstallation, Reconnect Battery And Perform A System Check. Many Vehicles Require A Diagnostic Tool (e.g., Dealer-Level Or PSA Tools) To Clear Fault Codes, Reinitialise The BSI And, If Necessary, Re-Synchronise Keys/Immobilizer.
- Observe Electrostatic Discharge (ESD) Precautions When Handling The Module.
Why This Part Fails Most Often
- Moisture Ingress And Corrosion: Water Leaks Or Condensation Can Corrode Connectors And Circuit Boards.
- Connector And Pin Damage: Loose Or Corroded Pins Cause Poor Contacts And Intermittent Failures.
- Electrical Surges Or Faulty Charging System: Alternator Spikes Or Poor Battery Connections May Damage Electronics.
- Age And Thermal Stress: Heat Cycling Over Many Years Leads To Component Degradation.
When replacing the BSI, always verify the part numbers against the vehicle’s fitted unit so you select the correct version. Proper installation and post-fit diagnostics reduce the risk of residual faults and ensure all comfort and security systems operate reliably.
