Headlamp Control Module: Description and Operation

LSZ




The central light switch (LSZ) in the E46 is redesigned with new electronic modules. The following points are changed:
- The voltage for the vehicle lighting is output with a pulse-width-modulated signal at a fixed frequency of 80 Hz.
- The LSZ has separate outputs for additional rear brakes lights and bi-xenon equipment.
- LSZ contains a separate switch position for driving light control (RLS).