Overview

This LEAR BSI V03-00 is the body control module (BSI) designed for the first-series Citroën C8 and Peugeot 807. The BSI is the central comfort and body electronics unit that manages lighting, central locking, interior electrics, wiper and washer logic, interior lighting, some instrument cluster messages and communication with other control units on the CAN network. This listing includes the product references commonly used when searching for a compatible unit.

Technical Information

• Manufacturer: LEAR (supplier for Stellantis)
• Model: Citroën C8; Peugeot 807 (first series)
• Product Codes: 9649477480; 6580S4; V03-00
• Other Numbers: 6580S5; NFP

Compatibility And Fitment

Fits first-generation Citroën C8 and Peugeot 807 models using the LEAR BSI V03-00 variant. Always verify the product codes stamped on the original unit (for example 9649477480, 6580S4) to ensure correct fitment. This unit replaces the central comfort module that controls vehicle interior and convenience functions.

How The Unit Works

The BSI acts as the vehicle’s body computer. It processes inputs from switches and sensors, drives relays and actuators for lights, locks and wipers, and communicates with other control units (engine ECU, instrument cluster, airbags) over the vehicle network. It can also store immobilizer and key data, which is why correct commissioning is essential after replacement.

Installation Recommendations

Installation should be carried out by a qualified technician or by an experienced DIYer comfortable with vehicle electronics. Typical replacement steps:

• Disconnect the negative battery terminal before starting to avoid short circuits or damage to the electronics.
• Remove interior trim panels to access the BSI housing (often located under the dashboard or behind the glovebox depending on vehicle).
• Carefully disconnect all connectors and mounting screws, then remove the old unit.
• Install the replacement unit, secure connectors and fasteners, reconnect the battery and proceed with the required commissioning (see coding options below).

Installation And Coding – Important

• The unit is used and is “paired” with the original vehicle (VIN/PIN/keys).
• Options for commissioning:
  1. Cloning data from the old unit (EEPROM/Flash) – after cloning the unit is plug and play.
  2. 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).
• Always disconnect the battery before removal/installation and follow the manufacturer’s procedure to avoid damaging the unit.

Why The Part Commonly Fails

Common failure causes for BSI units include water ingress and corrosion, connector oxidation, electrical surges or short circuits, failed solder joints or component degradation over time. Symptoms of a failing BSI may include intermittent or permanent loss of central locking, lighting malfunctions, inoperative wipers, communication errors on the dashboard or immobilizer/key recognition problems.

Practical Tips For Mechanics And DIYers

• Before removing the old BSI, document connector positions and any bracket orientation to simplify reassembly.
• Check for signs of moisture or corrosion in the connector area; repairing the vehicle wiring and connectors can prevent repeat failures.
• If cloning is chosen, ensure a reliable EEPROM/Flash transfer to preserve immobilizer and configuration data; if virginizing, plan for coding and key adaptation with appropriate diagnostic tools.

Keywords For Search

LEAR BSI V03-00, BSI unit Citroën C8, BSI unit Peugeot 807, 9649477480, 6580S4, comfort module, body control module, DiagBox, Lexia, PP2000, cloning, coding

Discover a high-quality used LEAR BSI control unit specifically designed for Citroën C8 and Peugeot 807 models. This essential electronic component ensures the proper operation of several key vehicle functions, making its replacement crucial when addressing electronic faults.

Ideal for professional mechanics and DIY enthusiasts seeking a reliable and effective solution for repairing or restoring the vehicle’s comfort features. Ensure your Citroën C8 or Peugeot 807 remains in optimal condition with this vital component.

Technical Information

• Manufacturer: LEAR
• Model: Citroën C8, Peugeot 807
• Product Codes: 1400310480, 6580S5, 6580S4
• Additional Numbers: NFP

This BSI (Body Systems Interface) comfort module developed by LEAR manages the connection and control of vehicle systems such as lighting, security, and other comfort functions. Installation requires technical knowledge and adherence to proper procedures to ensure correct assembly and functionality, supporting mechanics with necessary guidance.

During routine maintenance and diagnostics, replacement of this unit may be necessary if communication errors occur between control units or if the device suffers physical damage. Manufactured with precision to factory specifications, it offers enhanced reliability and long-term use.

Product Overview

This LEAR BSI V03-00 comfort control unit is intended for first‑generation Citroën C8 and Peugeot 807 models. The Body Systems Interface (BSI) centralizes and controls multiple vehicle functions — lighting, wipers, central locking, interior comfort systems, remote key recognition and some immobiliser/communication tasks — making it a critical module for daily vehicle operation. Commonly referenced by part numbers 1400010480, 6580S4 and 6580S5, this unit is often searched by code when sourcing replacements or spares.

Fitment And Function

Compatible With: Citroën C8 (first series), Peugeot 807 (first series). The BSI acts as the central comfort and body control unit, exchanging data with engine ECUs, gateway modules and the immobiliser system. On replacement it must be either cloned or reinitialized and coded to match the vehicle to restore all functions such as key recognition, central locking and alarm.

Technical Information

• Manufacturer: LEAR
• Model: BSI V03-00
• Product Codes: 1400010480, 6580S4, 6580S5, V03-00
• Additional Numbers: NFP

Installation And Coding – Important

• The unit is used and is ‘paired’ with the original vehicle (VIN/PIN/keys).
• Options For Commissioning:
  1. Cloning Data From The Old Unit (EEPROM/Flash) – After cloning the unit becomes plug and play.
  2. 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).
• Before Removal/Installation Always Disconnect The Battery And Follow Manufacturer Procedures To Avoid Damaging The Unit.

How Replacement Is Carried Out

Replacement typically requires removal of lower dashboard trim under the steering column to access the BSI. After disconnecting the battery, unplug all connectors, unbolt the unit and remove it. If cloning is chosen, the donor and original unit must be connected to a compatible cloning tool to transfer EEPROM/flash data. If reinitializing, the blank unit must be programmed and telecoded with DiagBox or equivalent PSA diagnostic software, then keys adapted as needed.

Installation Recommendations

• Always Disconnect The Battery Before Starting Work To Prevent Short Circuits And Data Corruption.
• Avoid Touching Electronic Contacts With Bare Hands; Use ESD Precautions Where Possible.
• If You Lack PSA Diagnostic Tools, Use A Specialist Workshop For Coding/Key Adaptation.
• Check Connector Pins And Harness For Corrosion Or Damage Before Reinstallation.
• After Installation Verify All Comfort Functions, Central Locking, Lights And Key Recognition Work Correctly.

Why This Part Commonly Fails

BSI failures are most often caused by environmental and electrical issues rather than mechanical wear. Typical causes include water ingress and condensation (from leaking windscreen seals or HVAC paths), corrosion on connector pins, cracked or dry solder joints on the PCB, voltage spikes from jump‑starts or faulty charging circuits, and internal capacitor degradation over time. Symptoms include intermittent or total loss of central locking, non‑working wipers or lights, key recognition problems and communication errors with other ECUs.

Buyer Notes

This unit is commonly sought by mechanics and DIY enthusiasts by its product codes (1400010480, 6580S4, 6580S5, V03-00). Ensure you are prepared for cloning or coding steps after physical replacement — without proper commissioning some vehicle functions may remain unavailable.

Are you looking for a reliable source of used auto parts for Citroën C8 and Peugeot 807 models? We have a fantastic offer for you – the used LEAR BSI Control Unit for these models. This part plays a crucial role in your vehicle’s management system, affecting many functionalities from locking doors to lighting and safety systems.

The LEAR BSI Control Unit is specifically designed for Citroën C8 and Peugeot 807 and is a highly specialized component that helps enhance the overall functionality of your vehicle. With this part, you will ensure that your car’s electronic components work as they should.

Technical Information:

• Manufacturer: LEAR
• Model: BSI V03-00
• Product Codes: 1499703080, 6580S4, 6580S5
• Additional Numbers: NF

This part is often searched for by its product codes, which is essential for accurate identification and ensuring compatibility with your vehicle. Due to its key role in the vehicle’s comfort unit system, occasional failures can occur; however, if the part is properly maintained and installed, it provides long-lasting reliability.

The offered control unit has been carefully cleaned and inspected to meet your expectations for quality and functionality. Remember to have the part installed with professional help to ensure proper operation in your vehicle.