Description
BSI E01-00 HG Siemens for Citroën and Peugeot vehicles
The BSI E01-00 HG by Siemens is a central body control/comfort module designed for a range of Citroën and Peugeot models. This unit manages multiple vehicle functions including central locking, interior and exterior lighting, windshield wipers, indicator logic, window controls, dashboard communication and elements of the immobilizer and comfort electronics. Common search queries include the part numbers listed below (9649627780, 6580HE, 1650882680, S118085320A), so listing these codes can speed up finding the correct replacement.
Suitable For
Commonly fitted to: Citroën Berlingo, Citroën Xsara Picasso, Peugeot 206, Peugeot Partner. Compatibility can depend on the exact part code and vehicle equipment level; check the product codes below to confirm fitment.
Technical Information
- Manufacturer: Siemens
- Model: BSI E01-00 HG
- Product Codes: 9649627780, 6580HE
- Other Numbers: 1650882680, S118085320A
Function And Symptoms
The BSI acts as the vehicle’s body computer for comfort and convenience systems. Typical symptoms of a failing BSI include intermittent or total loss of central locking, erratic lighting or indicators, non-functional wipers, dead or flickering cabin lights, warning lights on the dash, and faults in door/window functions. Electrical glitches, blown fuses or communication errors on the vehicle CAN/serial buses are also common indicators.
Why The Part Fails Most Often
Failures are most commonly caused by water ingress and corrosion on connectors or the PCB, thermal stress and degraded solder joints, voltage spikes or poor battery connections, and mechanical damage from improper handling. Long-term exposure to moisture and repeated thermal cycles accelerates failure of onboard relays and electronic components.
Installation Recommendations
Before starting work, always disconnect the vehicle battery and follow the manufacturer’s removal/installation procedure to avoid damage. Handle the unit with care to prevent ESD and mechanical shock. Clean connector pins and ensure seals are intact to reduce the risk of future corrosion. After physical replacement, coding or data transfer is usually required to restore full functionality (see Installation And Coding – Important 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).
- Before Removal/Installation Always Disconnect The Battery And Follow Manufacturer Procedure To Avoid Damaging The Unit.
Practical Tips For Mechanics And DIYers
When replacing a BSI, label and photograph connector positions to avoid mistakes during reassembly. If possible, perform an EEPROM/Flash dump of the old module before disconnection—this enables cloning and can avoid complex coding steps. Verify all fuses and relays related to comfort systems before condemning the BSI. After installation, check all controlled functions and clear fault codes with appropriate diagnostic equipment.
