Description
BSI BSI04EV K05-00 Johnson Controls for Citroën and Peugeot vehicles. It is from a Peugeot 308.
Overview
This used BSI (Built-In Systems Interface) unit BSI04EV K05-00 by Johnson Controls is a comfort and body control module originally fitted to PSA group cars. It controls multiple vehicle functions such as lighting, wipers, central locking, interior electronics and communication with other control units. The part numbers referenced for search and identification include 9666895780, 01 658059 and 1663370480, which makes this unit easy to find in online catalogs and stock lists.
Technical Information
- Manufacturer: Johnson Controls
- Model: BSI04EV K05-00
- Product Codes: 9666895780, 01 658059
- Additional Numbers: 1663370480
- Removed From: Peugeot 308
How It Is Replaced
Replacement of a BSI unit typically involves the following steps. Always follow vehicle manufacturer instructions and safety procedures.
- Disconnect the negative battery terminal and wait a few minutes to fully remove power from the vehicle network.
- Access the BSI module, usually located behind the glovebox or under the lower dashboard on the passenger side. Remove trim panels and fixings as required.
- Unplug all multi-pin connectors and retain any screws or clips. Inspect connectors for corrosion or damage.
- Fit the replacement unit mechanically, reconnect the harness and reassemble trims.
- Perform the required commissioning procedure for the unit: cloning or initialization/coding and key adaptation as described below.
- Reconnect the battery, carry out final checks and verify all vehicle functions and fault codes with diagnostic equipment.
Installation And Coding – Important
- The unit is used and is paired with the original vehicle (VIN/PIN/keys).
- Options to put into service:
- 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) plus 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 the manufacturer procedure to avoid damaging the unit.
Installation Recommendations
Work should be carried out by a qualified mechanic or experienced DIYer with proper tools. Verify the health of related fuses, relays and wiring before replacing the BSI to avoid repeated failures. Use electrostatic discharge precautions when handling the unit, keep connectors clean and dry, and ensure secure mechanical mounting. After installation, perform a full diagnostic check and adaptation of keys and immobilizer if required.
Common Failure Causes
BSI units fail for several common reasons: water ingress and corrosion in connectors or the housing, electrical surges or short circuits, poor battery condition or jump-starting damage, and internal component ageing. Faulty grounds or intermittent wiring can also cause symptom patterns that look like BSI failure. Because the BSI centralizes many functions, a failing unit can produce a wide range of electrical faults, from non-working central locking to intermittent dashboard warnings.
This listing is targeted at mechanics and competent DIY enthusiasts searching by part number or model. Use the product codes 9666895780, 01 658059 and 1663370480 when searching to quickly locate this exact BSI unit for Citroën and Peugeot vehicles such as Peugeot 308 and Citroën C4.
