Home Lighting - BMW 1999-2005 M3 Service Manual

Lights
4 of 6
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Parking lights
Side marker lights
License plate lights
Hot and cold monitoring of light bulbs
allows the LSZ to detect defective
bulbs. Hot monitoring checks the
continuity of circuits while the lights are
switched on. Cold monitoring consists
of a brief pulse of current which is too
short for the lights to illuminate.t If the
module detects a defective bulb, a
signal is sent to the instrument cluster
and Check Control is illuminated with
the appropriate warning.

Home lighting

This convenience feature provides
lighting for the driver and passengers
to leave the vehicle and enter their
house. The feature is switched on by
activating the headlight flasher switch
after the lights and ignition are
switched OFF. The feature is switched
off after the coded time delay or by
switching the ignition ON.
Redundant data storage
The light control module serves as the
redundant storage module in parallel
with the instrument cluster. This
includes all data used for vehicle
identification, encoded on the
assembly line. In addition the total
mileage and service interval data are
also stored in the light control module.
If either the instrument cluster or light
control module has to be replaced, the
data is taken from the remaining
2/25/2009 11:14 PM