BMW X3 Owners Manual: General information
Position of switch: 
,
,
If the driver door is opened with the ignition switched off, the exterior lighting is automatically switched off at these switch settings.
Parking lights
Position of switch
: the vehicle's lights
light up on all sides, e.g., for parking.
Do not use the parking lights for extended periods; otherwise, they might drain the battery and it would then be impossible to start the engine.
When parking, it is preferable to switch on the one-sided roadside parking lights.
Low beams
Position of switch
with the ignition
switched on: the low beams light up.
Welcome lights
When the vehicle is parked, leave the switch in
position
or
: parking and interior lights
come on briefly when the vehicle is unlocked
depending on the ambient brightness.
Activating/deactivating
1. "Settings"
2. "Lighting"
3. "Welcome lights"
Settings are stored for the profile currently in use.
Headlight courtesy delay feature
The low beams stay lit for a short while after the radio-ready state is switched off if the lights are turned off and the headlight flasher is switched on.
Setting the duration
1. "Settings"
2. "Lighting"
3. "Pathway lighting:"
4. Set length of time.
Settings are stored for the profile currently in use.
Automatic headlight control
Position of switch
: the low beams are activated
and off automatically, e.g., in tunnels, in
twilight or if there is precipitation. The indicator
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Other materials:
BMW X3 Service & Repair Manual > Engine wiring loom: Replacing the wiring harness section for the engine transmission module (N20)
IMPORTANT:
Read and comply with notes on PROTECTION AGAINST ELECTROSTATIC
DISCHARGE (ESD PROTECTION) .
Necessary preliminary tasks:
Read out the fault memory of the DME control unit.
Switch off ignition.
Remove intake PLENUM .
Remove rear UNDERBODY PROTECTION .
Remove cross mem ...