XC60 AWD L6-3.2L VIN 96 B6324S2 (2010)
Once the lamp is on, voltage is lowered to the approximately 100 V required to keep the lamp lit.
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Each time voltage is supplied to the high voltage unit, an attempt is made to light the Bi-Xenon lamp. If this voltage does not exceed 9.5 V during
a time period of 200 ms, the lamp does not light. If voltage is too low, such as after a voltage-consuming cold start, the lamp does not light just
because the engine is running and the alternator begins charging. A new attempt must be made to start the lamp by turning the light switch to the
"0" or parking light position and then back to the low beam position.
Warning! Because of the high voltage it is important to follow the instructions for working with Bi- Xenon lamps and the high voltage unit!
Function
Function
Automatic headlight levelling
For vehicles without Four-C (Continuously Controlled Chassis Concept), the position sensors (7/119, 7/121) for rear wheel suspension and front wheel
suspension send information to the headlamp control module (HCM) (4/118) on vehicle angle as regards load conditions, acceleration and braking.
For vehicles with Four-C (Continuously Controlled Chassis Concept), the suspension module (SUM) (4/84) sends information to the headlamp control
module (HCM) on vehicle angle as regards load conditions, acceleration and braking.
The headlamp control module (HCM) uses the information from the position sensors or suspension module (SUM) to calculate the actual angle for the
headlamps.
The headlamp control module (HCM) transmits information on the actual angle to the left headlamp control unit (LHCU) and right headlamp control
unit (RHCU) via serial communication. The actuator motors are then controlled by the left headlamp control unit (LHCU) or right headlamp control unit
(RHCU), respectively, via an analogue signal.
Active headlights
