Description
BSI Control Unit Siemens E01-00 for Citroën Berlingo and Xsara Picasso and Peugeot Partner
This Siemens BSI (Built-In Systems Interface) E01-00 is a direct-fit comfort/control unit for a range of Citroën and Peugeot models. Commonly searched by part number (for example 9652474680), this module manages multiple body electronics and is a frequent replacement item in older vehicles or cars exposed to moisture and electrical stress. Designed for professional workshops and competent DIY mechanics, the description below explains function, compatibility, replacement guidance and technical references to help you decide and install with confidence.
Technical Information
- Manufacturer: Siemens
- Model: BSI E01-00
- Product Codes: 9652474680, S118085320 C
- Additional Numbers: 6580P2, 6580E8, 1650882380
Compatibility
Typical vehicle applications include Citroën Berlingo, Citroën Xsara Picasso, Peugeot 206 and Peugeot Partner. Compatibility is commonly checked by the part numbers listed above; cross-reference with vehicle-specific parts lists before installation.
Function
The BSI is the vehicle body computer that centralizes comfort and convenience functions: central locking, interior and exterior lighting logic, wipers, indicator and hazard management, power windows, interior convenience circuits and communications between modules. It also handles immobilizer-related communication and interfaces with other control units on the vehicle CAN bus.
Replacement and Installation
Basic replacement steps for experienced technicians or skilled DIYers:
- Disconnect the negative battery terminal before starting work to avoid short circuits and potential damage to electronic modules.
- Gain access to the BSI (usually located behind the dashboard or glovebox area); remove trim panels and fasteners as required.
- Carefully unplug the multi-way connectors and remove the unit from its mountings.
- Install the replacement unit, secure fastenings and reconnect connectors, ensuring firm, corrosion-free contacts.
- Follow coding/cloning steps described below to restore full functionality (see Installation and Coding – Important).
Installation and Coding – Important
- The unit is used and is paired with the original vehicle (VIN/PIN/keys).
- Options to put the unit 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 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 It Fails
Common failure causes include moisture ingress and corrosion of pins or connectors, electrical surges or poor battery/charging system condition, mechanical damage from impact or improper handling, and degraded solder joints over long service life. Fault symptoms often include intermittent or permanent loss of central locking, lighting or wiper functions, communication errors on the dashboard, or immobilizer-related issues.
Recommendations For Installation
Handle the unit with electrostatic awareness, avoid touching exposed pins, and ensure connector contacts are clean and dry. If reusing the original unit’s security data, prefer cloning the EEPROM/Flash to avoid immobilizer or key recognition problems. If virginizing and coding, use official PSA diagnostic tools and perform key adaptation where required. After installation, verify all comfort functions and communications on the vehicle network.
Service Life And Notes
Service life depends on vehicle environment and maintenance. Units in cars exposed to damp or salt are more prone to early failure. When sourcing a replacement, prefer parts that match the exact product codes listed in Technical Information to minimize coding and compatibility work.
