Description
Control Unit LEAR D1B-00 BSI For PEUGEOT 607.
The LEAR D1B-00 BSI is a central comfort and body electronics module designed for the Peugeot 607. This unit manages multiple convenience, security and communication functions on the vehicle, consolidating inputs from switches, sensors and networks into control signals for lighting, central locking, wipers, windows and more. Commonly referenced by part numbers 9648051180 and 6580K2, this BSI is frequently searched by technicians by its product codes when replacing or diagnosing electrical faults.
Technical Information
- Manufacturer: LEAR
- Model: Peugeot 607
- Product Codes: LEAR D1B-00 BSI
- Additional Numbers: 9648051180, 6580K2
Function And Fitment
The BSI (Body Systems Interface) is the vehicle’s central comfort module. It coordinates and powers circuits for interior and exterior lighting, central locking, alarm and immobiliser logic, power windows, wipers, dashboard indicators and gateway communication to other control units. This specific unit fits Peugeot 607 applications using the LEAR D1B-00 hardware and the listed part numbers. Always verify the part codes on the original unit before installation.
How To Replace
- Disconnect the negative battery terminal before any work to prevent short circuits and data corruption.
- Access the BSI location (typically inside the passenger compartment behind the glovebox or lower dash on the left/right depending on model year). Remove trim panels to reach the unit.
- Unplug all electrical connectors carefully, releasing locking tabs to avoid damage to pins and housings.
- Remove mounting fasteners and extract the old unit. Fit the replacement in the correct orientation and secure fasteners.
- Reconnect connectors, ensuring full engagement and that harnesses are routed without tension.
- After mechanical installation, follow the coding/initialization procedure (see Installation And Coding – Important below) to restore full functionality.
Installation And Coding – Important
- The unit is used and is paired with the original vehicle (VIN/PIN/keys).
- Activation 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 specialist with PSA service equipment (DiagBox/Lexia/PP2000).
- Before disassembly/assembly always disconnect the battery and follow the manufacturer’s procedure to avoid damage to the unit.
Reasons For Failure
BSI units commonly fail due to environmental and electrical stresses rather than scheduled wear. Typical causes include:
- Moisture ingress or condensation leading to corrosion of contacts and PCB traces.
- Thermal cycling and vibration causing cracked solder joints or component fractures.
- Voltage spikes, jump-starts or poor battery connections that damage electronic components.
- Faulty connectors or wiring harness issues that create intermittent signals or short circuits.
Mounting Recommendations
- Always disconnect the battery before removing or installing the BSI.
- Handle the unit carefully to avoid electrostatic discharge; avoid touching PCB components or connector pins.
- Ensure connectors are clean and free of corrosion; apply dielectric grease to exposed terminals where appropriate.
- After installation, verify all vehicle functions (locking, lighting, wipers, windows, alarm) and perform required coding/initialization with proper diagnostic tools.
This BSI is often searched using part numbers 9648051180 and 6580K2. It is intended for Peugeot 607 models using the LEAR D1B-00 BSI configuration. Professional installation and proper coding are strongly recommended to restore full vehicle functionality and security features.
