Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSBMW2006X3 (E83) (CANADA) L6-2.5L (M54)REPAIR AND DIAGNOSISRELAYS AND MODULESRELAYS AND MODULES - POWERTRAIN MANAGEMENTRELAYS AND MODULES - COMPUTERS AND CONTROL SYSTEMSENGINE CONTROL MODULEDIAGRAMSDIAGRAM INFORMATION AND INSTRUCTIONSSIGNAL GLOSSARYSIGNAL NAMES WITH L
2006 BMW X3 (E83) (CANADA) L6-2.5L (M54)
Signal Names With L
2006 BMW X3 (E83) (CANADA) L6-2.5L (M54)SECTION Signal Names With L
LA Steering column UP
LB Steering column DOWN
LEW_G Wiper, GREEN, steering-angle sensor
LEW_R Wiper, RED, steering-angle sensor
LH+ Loudspeaker, rear left +
LH- Loudspeaker, rear left -
LKVBF Seat switch, backrest head forward, pass
LKVFA Seat switch, backrest head forward, driv
LKZBF Seat switch, backrest head backw., pass.
LKZFA Seat switch, backrest head backw., driv.
LMLWR Power supply, headl. vertic. aim control
LMP Power supply, K, S lamp (EDC switch)
LNVFA Seat switch, backrest forwards, driver
LNZFA Seat switch, backrest backwards, driver
LOBFM+ Pwr supply, motor, lumbar support, pass
LOBFM- Earth, motor, lumbar support, passenger
LOBFPP Lumbar support, passenger, pump
LOESCHAN Check fire-extinguishing equipm. (SF)
LOFAM+ Pwr supply, motor, lumbar support, driv
LOFAM- Ground, motor, lumbar support, driver
LOFAPP Lumbar support, driver, pump
LOHIM+ Pwr supply, lumbar-support motor, rear
LOHIM- Ground, lumbar-support motor, rear
LOHIPP Lumbar support, rear, pump
LPP Secondary air pump, series resistor
LPPM Secondary air pump via relay
LS+ Loudspeaker, PDC, rear, positive
LS- Loudspeaker, PDC, rear, negative
LSGND Ground, switches, steering column
LSHL Conductor loop, door, rear left
LSHR Conductor loop, door, rear right
LSS Steering-column stalk
LUFTAN Check air system (SF)
LV Steering column FORWARDS
LW+ DSC steering-angle sensor, positive
LW1 DSC steering-angle sensor, signal 1
LW2 DSC steering-angle sensor, signal 2
LWBL Lamp in hazard-warning switch
LWGND DSC steering-angle sensor, ground
LWR Control, headlight vertical aim control
LWRP Headl. vertical aim control potentiometer
LZ Steering column BACKWARDS
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.