Description
BSI E01-00 HG SIEMENS for Citroën and Peugeot Vehicles
Product Overview
This BSI (Body Systems Interface) E01-00 manufactured by Siemens is a central comfort and electronics control unit used on a range of Citroën and Peugeot models. The module manages multiple body functions such as central locking, interior and exterior lighting logic, wipers, power windows, alarm/immobiliser interface and acts as a gateway on the vehicle CAN bus. It is supplied as a used replacement unit suitable for professional installers and experienced DIY mechanics who understand the need for correct coding or cloning.
Compatible Models
Typical Fitment Includes: Citroën Berlingo, Citroën Xsara Picasso, Peugeot Partner. Always verify product codes match the unit being replaced.
How It Functions And Typical Fault Symptoms
The BSI centralises vehicle comfort and body electronics. Common symptoms indicating BSI faults are intermittent or permanent loss of central locking, malfunctioning interior/exterior lights, erratic wiper operation, false alarms, key recognition/immobiliser errors, non-responsive switches and unexplained battery drain. Faults often present as communication errors on diagnostic tools (CAN bus errors) or multiple unrelated electrical issues occurring simultaneously.
How To Replace
Replacement Requires basic disassembly of the lower dashboard area to access the BSI housing. General steps:
- Disconnect the battery before any work on the BSI.
- Remove trim panels and any securing screws to access the unit.
- Unplug connectors carefully, noting locking tabs and alignment.
- Install the replacement unit, reconnect connectors and reassemble trim.
- Proceed with either cloning or coding/initialization as required (see Installation And Coding – Important).
Work Should Be Carried Out By A Competent Technician If You Are Not Confident With Vehicle Electronics.
Installation And Coding – Important
– The Unit Is Used And Is “Paired” With The Original Vehicle (VIN/PIN/Keys).
– Options For Commissioning:
- 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 Professional With PSA Service Equipment (DiagBox/Lexia/PP2000).
– Before Removal/Installation Always Disconnect The Battery And Follow Manufacturer Procedures To Avoid Damaging The Unit.
Technical Information
- Manufacturer: Siemens
- Model: BSI E01-00 HG
- Product Codes: 9649627780, S118085320A
- Additional Numbers: 6580E8, 1650882380, 6580E4, 6580E5
- Compatible Vehicles: Citroën Berlingo; Citroën Xsara Picasso; Peugeot Partner
Recommended For Installation
Use the correct PSA diagnostic equipment (DiagBox/Lexia/PP2000) to complete coding, key adaptation and system tests after installation. Protect the unit from electrostatic discharge, ensure connectors are clean and dry, and verify vehicle battery voltage is stable during programming. If cloning, ensure a reliable EEPROM/Flash read and write process to avoid corrupted data transfer.
Why This Part Fails Most Often
Common Causes Of Failure Include Water Ingress And Corrosion Around Connectors, Electrical Overvoltage Or Spikes (Poor Charging System Or Jump-Start Issues), Internal Component Ageing, And Mechanical Damage From Improper Handling Or Incorrect Removal/Installation. Symptoms Often Appear Gradually Or Intermittently Before Complete Failure.
Notes For Buyers
This Unit Is Intended For Technicians And Experienced DIY Enthusiasts. Ensure The Unit’s Product Codes Match Your Faulty Unit. Correct Final Commissioning Requires Either Cloning From The Original Unit Or Professional Initialization/Coding.
