BMW F48 Technical Training Manual page 36

F48￿General￿Vehicle￿Electronics
3.￿Exterior￿Lights
Special￿features
In￿vehicles￿with￿LED￿headlights￿a￿ride￿height￿sensor￿for￿the￿automatic￿headlight￿beam￿throw
adjustment￿is￿installed￿at￿the￿front￿and￿rear￿axle￿on￿the￿right￿side￿of￿vehicle.
For￿the￿F48￿with￿LED￿headlight,￿a￿headlight￿cleaning￿system￿is￿not￿required.￿This￿could￿be￿waived￿due
to￿compliance￿with￿all￿legal￿requirements.
The￿Frontal￿Light￿Electronics￿Left￿and￿Right￿(FLEL/FLER)￿is￿installed￿at￿the￿rear￿side￿of￿the￿LED
headlight￿and￿controls￿the￿following￿functions:
• Low-beam￿headlight
• High￿beam
• Headlight￿flasher
• Headlight￿beam￿angle￿adjustment
• Cornering￿lights
In￿addition,￿the￿FLE￿controls￿the￿temperature￿control￿in￿the￿LED￿headlight.￿The￿values￿of￿two
temperature￿sensors￿at￿the￿heat￿sink￿serve￿as￿input￿signals.￿After￿switching￿off￿the￿lighting￿function￿an
after-run￿of￿the￿fans￿of￿up￿to￿60￿seconds￿is￿possible.￿In￿the￿temperature￿control￿there￿is￿also￿a￿function
for￿the￿de-icing￿of￿the￿LED￿headlight.
In￿the￿case￿of￿a￿failure￿of￿a￿temperature￿sensor￿the￿fans￿are￿switched￿on￿at￿full￿power￿to￿protect￿the
components￿in￿the￿LED￿headlight.￿The￿data￿from￿the￿FLE￿is￿transferred￿to￿the￿Body￿Domain￿Controller
(BDC)￿via￿the￿local￿interconnect￿network￿bus￿for￿the￿diagnosis￿of￿the￿fans￿and￿temperature￿sensors.
For￿legal￿reasons￿(approval￿of￿light￿technology),￿the￿LED￿headlight￿obtains￿a￿forced￿connection￿for￿the
rain-light-solar-condensation￿sensor.
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