S40 L5-2.4L VIN 38 B5244S4 (2004)
threshold value a fault will be indicated. The general warning lamp lights in the driver information module (DIM) and a text message is displayed.
Lighting the headlight
It normally takes 3 seconds from activation at the light switch with the ignition on to the lamp lighting.
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As with normal headlights, the lamps remain off while the starter motor is cranking and come on once the engine is running.
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On each occasion that voltage is supplied to the ballast 3 attempts, within 1 second, are made to light the lamp.
Right and left-hand asymmetric lamps
The right and left-hand asymmetric lamps are adjusted mechanically using a simple operation. A lever is accessible when the rear cover on the headlight
housing is opened.
A = left-hand asymmetric lamp
B = right-hand asymmetric lamp
Automatic headlight levelling
Motors integrated in the headlights regulate the beam range of the headlights. The motors adjust the headlights vertically depending on load and road
conditions to reduce the risk of dazzle.
The motors are regulated via signals from one position sensor at the rear axle and one at the front axle.
and one at the front axle. The position sensor are directly connected to the "master" gas discharge lamp module (GDL). The sensors detect vehicle angle
in different load conditions and transmit information to the "master" gas discharge lamp module (GDL), which then sends control signals to the motors
regulating beam range.
If there is a fault in the automatic headlight levelling for the Bi-Xenon lamps, the actuator motors will automatically set the beam range to the shortest
level.
There are diagnostics for the headlight levelling.
Headlight levelling position sensors (Bi-Xenon)
