SZL: Steering Column Switch
The SZL control unit forwards the signals from the turn-signal/main-beam switch to the adaptive headlights control unit.
- E60, E61, E63, E64, E65 and E66
- E70, E81, E87, E90, E91, E92, E93
The steering column switch cluster forwards the signals from the turn-signal/main-beam switch to the footwell module (FRM).