Description
LEAR D1B-00 BSI Control Unit For Peugeot 607
This used LEAR D1B-00 BSI (Body System Interface) is a direct-fit comfort/electronics control unit for the Peugeot 607. Supplied with known product codes 9648051180 / 6580K2 / D1B-00, the unit restores control over central locking, interior lighting, convenience features and communication with other vehicle modules. Ideal for professional workshops and experienced DIY mechanics who search by part number to quickly identify the correct replacement for fault diagnosis and repair.
Technical Information
- Manufacturer: LEAR
- Model: Peugeot 607
- Product Codes: 9648051180; 6580K2; D1B-00
- Other Numbers: D1B-00 (alternate marking)
Function And Typical Applications
The BSI (Body System Interface) acts as the central comfort electronics unit on PSA vehicles. It manages and coordinates functions such as central locking, interior and exterior lighting logic, wiper/washer control, alarm and immobilizer interfaces, keypad/console inputs and data exchange with the instrument cluster and engine ECU. Replacing a faulty BSI often resolves intermittent central-lock failures, unexplained lighting faults, non‑working wipers or erratic interior electronics behavior.
How The Unit Is Replaced
General replacement steps for experienced technicians or competent DIYers:
- Disconnect The Battery Before Any Work To Avoid Short Circuits Or Damage To Electronics.
- Access The BSI Module (Typically Located In The Passenger Compartment; Often Behind The Glovebox Or Under The Dashboard). Remove Trim Panels To Reach The Unit.
- Carefully Unplug All Electrical Connectors And Release Any Retaining Clips Or Bolts.
- Fit The Replacement Unit, Reconnect All Connectors Securely And Reassemble Interior Trim.
- Perform Required Coding Or Data Transfer/Cloning (See Installation And Coding – Important).
Installation And Coding – Important
- Unit Is Used And Is “Paired” With The Original Vehicle (VIN/PIN/Keys).
- Commissioning Options:
- Cloning Data From The Old Unit (EEPROM/Flash) – After Cloning The Unit Is Plug And Play.
- Virginization And Subsequent Initialization/Telecoding Via DiagBox (Or Online) + Key Adaptation.
- Recommended To Be Performed By A Technician With PSA Service Equipment (DiagBox/Lexia/PP2000).
- Always Disconnect The Battery Before Removal/Installation And Follow Manufacturer Procedures To Avoid Damaging The Unit.
Recommendations For Installation
Handle The Unit And Connectors Carefully. Inspect Connector Pins And Wiring Loom For Corrosion Or Damage Before Reuse. Replace Any Faulty Fuses And Check Grounds During Installation. If Cloning Is Chosen, Ensure A Full And Verified EEPROM/Flash Copy. After Coding, Verify All Comfort Functions And Immobilizer Operation Before Returning The Vehicle To Service.
Why This Part Fails Most Often
- Water Ingress Or Moisture Causing Corrosion On Circuitry Or Connectors.
- Electrical Surges, Short Circuits Or Poor Grounding Leading To Component Damage.
- Thermal Stress And Aging Of Solder Joints Or Electronic Components.
- Software Corruption Or Memory Faults Requiring Cloning Or Reinitialization.
If you are searching by part number (9648051180, 6580K2, D1B-00), this LEAR BSI is supplied to meet Peugeot 607 comfort electronics repair needs. Suitable for professional fitment and for skilled DIYers familiar with module coding and PSA diagnostic procedures.
