Electrical fuse
Interrupts an overloaded electrical circuit.
In vehicle-specific fuse panels or distribution assemblies.
Its element opens when current and duration exceed its rating; the rating must match the circuit.
A sacrificial safety link in a wire.
A repeatedly blown fuse indicates a fault requiring investigation rather than a stronger fuse.
Batteries and connections depend on age, charging and usage. Control units are diagnosed by faults, power and communications.
A fuse or connection differs from a coded controller. Identify the cause before replacing an expensive electronic module.
BMW fuse assignments vary with equipment and build, so use the diagram for the actual car.
BMW low-voltage systems across combustion, hybrid and electric models; equipment varies.