Description
Description
Original Siemens BSM B2 (Boîtier de Servitude Moteur) fuse and relay box for Citroen and Peugeot vehicles. This is a used part supplied with a functional guarantee. The unit may show cosmetic wear or a damaged plastic mounting clip; such damage does not affect the electrical performance when installed correctly.
Function And Common Failures
The BSM distributes power and switches key vehicle circuits including the fuel pump, cooling fan, wipers, lights and ignition. Typical symptoms of a failing BSM are intermittent starting, fuel pump dropouts, non-functioning wipers or fan and sporadic electrical faults. Failures commonly result from moisture ingress, corrosion of connector pins or overheating of internal relays.
Fitment And Compatibility
Compatibility includes, but is not limited to, Citroen Berlingo, C2, C3, Xsara, Xsara Picasso and Peugeot 206 and Partner. Always compare the BSM variant (B2), the part number 9643498980 and the connector layout with your original unit before ordering. When part numbers and connectors match, replacement is generally plug-and-play without additional coding.
Replacement Procedure
Before any work, disconnect the vehicle battery. The BSM is located in the engine bay near the battery. Release the fuse/connector locks and carefully remove the unit. Transfer fuses and relays to the replacement unit in the original configuration if required. After installation, verify fuse ratings against the vehicle wiring diagram. A correctly matched BSM operates without further programming.
Why Choose This Original Used Part
Factory Siemens quality and exact electrical compatibility with PSA wiring offer better reliability than generic universal modules. This used BSM provides an economical original-spec replacement with a functional guarantee and is often sought under the catalog numbers listed below.
Technical Information
- Manufacturer: Siemens
- Model: BSM B2 (Engine Fuse And Relay Box, under-hood)
- Product Codes: 9643498980, 9643498980-00
- Additional Numbers: 6500.Y1, 6500.Y3, T11847002
Before ordering, compare the BSM marking (B2), part number 9643498980 and the connector shape with your original unit to ensure a fast, trouble-free installation and full functionality of all powered circuits.
