BSI04EV K04-00 BSI Module for Citroën Peugeot 9664059080 02 657064

Description

BSI BSI04EV K04-00 Johnson Controls Citroën Peugeot from 2008 Citroën C4 Grand Picasso BOOT 28120836-4 HARD 28119248-3B

Overview

This BSI (Body System Interface) BSI04EV K04-00 comfort/control unit from Johnson Controls is a direct-fit electronic module used in Citroën and Peugeot vehicles, notably the Citroën C4 Grand Picasso from 2008 onwards. The unit centralizes many vehicle functions such as central locking, interior lights, alarm, wipers, window controls and various comfort and convenience signals. It is commonly searched by product codes and part numbers (e.g. 9664059080), so listing these references helps fast identification by mechanics and DIY enthusiasts.

Technical Information

• Manufacturer: Johnson Controls
• Model: BSI04EV K04-00
• Product Codes: 9664059080; 02 657064; 02 1663370780
• Additional Numbers: BOOT 28120836-4; HARD 28119248-3B
• Fitment: Citroën C4 Grand Picasso (from 2008)

Why This Part Matters

The BSI is the central comfort module that manages and coordinates multiple low-voltage body functions. A faulty BSI can cause symptoms ranging from intermittent central locking and non-functioning interior lights to complete loss of remote key recognition, failure of wipers or windows, and sporadic instrument cluster communications. Replacing a faulty BSI restores reliable control of these systems, but correct initialization and coding are required for full functionality.

Common Failure Causes

• Water Ingress And Corrosion: Moisture reaching the module or connector pins is one of the most frequent causes of failure.
• Electrical Disturbances: Battery disconnects during programming, jump-starts, or voltage spikes can damage internal electronics or corrupt software.
• Age-Related Component Wear: Solder joints, capacitors or connectors can degrade over time, leading to intermittent faults.
• Software Or Data Corruption: Corrupted EEPROM/flash data can cause unpredictable behavior or loss of features.

Installation Recommendations

Installation of a BSI requires careful, methodical work. Follow these general steps:

• Disconnect Battery: Always disconnect the negative battery terminal before starting to avoid electrical damage and airbag system faults.
• Access Module: Remove necessary trim panels or glovebox to access the BSI mounted typically behind the dashboard or under the glovebox on C4 Grand Picasso models.
• Document Connections: Take photos or notes of connector positions and locking tabs before removal.
• Unplug Carefully: Release connector locks and remove wiring harnesses without forcing pins.
• Swap Unit: Fit the replacement BSI, secure mounting bolts and reconnect harnesses firmly.
• Coding/Initialization: The BSI will usually require cloning or coding (see important note below) to restore remote keys, immobilizer and vehicle-specific functions.
• Final Check: Reconnect battery, perform diagnostics and confirm all comfort functions, locks, lights and keys operate correctly.

Installation And Coding – Important

• The Unit Is Used And Is “Paired” With The Original Vehicle (VIN/PIN/Keys).
• Options To Bring The Unit Into Service:
  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.
• It Is 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 Damage To The Unit.

Notes For Mechanics And DIYers

When sourcing a replacement BSI, match the module model and part numbers listed above. If cloning is chosen, ensure the donor and recipient hardware versions are compatible. If virginizing and coding, use official PSA diagnostic tools to avoid immobilizer or key recognition issues. For workshop efficiency, prepare the vehicle for coding by having all keys present and battery at stable charge.

Fitment & Compatibility

Typical Fitment: Citroën C4 Grand Picasso (from 2008). Always verify the module model and printed part numbers match the original unit before installation.

Summary

This BSI04EV K04-00 unit is a central comfort module designed for Citroën/Peugeot vehicles and plays a vital role in vehicle convenience and security systems. Proper installation and professional coding or cloning are essential for full functionality. Use the listed product and additional numbers to confirm compatibility and ensure a successful replacement.