BMW ONBOARD COMPUTER Bedienungsanleitung PDF herunterladen (Seite 26)

LAMP MONITORING

Lamp monitoring on the E46 is a function of the LSZ control module. The following lamps

are monitored in both the hot and cold states:

• High/low beams

• Brake lights - left/right

• Turn signal lights

• Tail lights

• Parking lights

• Side marker lights

• License plate lights

Hot monitoring takes place when the lights are switched by monitoring the current flow

through the lamp filaments.

Cold monitoring takes place by the LSZ when the lights are switched off. The LSZ will briefly

activate the lighting circuits and check for current flow through the lamps. The lights are not

switched on long enough to illuminate the bulbs.

If the LSZ detects a defective bulb, a signal is sent to the instrument cluster and the warn-

ing is posted in the Check Control pictogram.

E46 Driver information

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BMW ONBOARD COMPUTER Bedienungsanleitung Seite 26