
Fig. 68 Next to the steering wheel: examples of the various light switches
First read and observe the introductory information
and safety warnings
Observe any country-specific regulations when using vehicle lighting.
In vehicles with a factory-fitted towing bracket, the vehicle's rear fog lights are switched off automatically if a trailer with rear fog lights is electrically connected to the vehicle.
| Turn the light switch to the required position : | ||
|---|---|---|
| When the ignition is switched off | When the ignition is switched on | |
|
The fog lights, dipped beam headlights and side lights are switched off. | The lights are switched off, or the daytime headlights or daytime running lights are switched on. |
|
The side lights are switched on. | The side lights are switched on. |
|
The dipped beam headlights are switched off. The side lights may still light up for a short time. | The dipped beam headlights are switched on. |
Fog lights
The indicator lamps
or
in the light switch or instrument
cluster indicate that the fog lights are switched on.
on, pull the light switch out of the position
or
to the first stop.
on, pull the light switch out
of position
or
as far as it will go.
. Signal tones if lights are not switched off
If the key is removed from the ignition lock and the driver door is opened, a signal tone will sound in any of the following situations. This will remind you to switch off the lights as necessary.
or
. Gas discharge bulbs
Gas discharge bulbs generate bright, uniform light for better illumination of the road. This also improves the visibility of the vehicle for other road users. The light from gas discharge bulbs is generated by passing a very high current between two electrodes located in a gas-filled bulb.
The electrodes wear over time, which increases the distance between them. The control unit for the gas discharge bulbs detect this change and increases the current to ensure that the generated light remains bright and uniform.
However, gas discharge bulbs can also blow. Before they blow, they may flicker or stop generating uniform light. Some vehicles (depending on the equipment level) may display a corresponding notification in the instrument cluster.
If the gas discharge bulbs flicker or stop generating uniform light, go to a qualified workshop immediately to have the headlights checked.

WARNING
Turn signal and main beam lever
Lights and vision – functionsWiring Harness Repair Set - Hot Air Blower -VAS1978/14A
Caution
When heat-shrinking crimp connections, be careful
not to damage any other wiring, plastic parts or
insulating material with the hot nozzle of the hot air
gun.
Always ...
MFD (multifunction display) menu
First read and observe the introductory
information and safety warnings
The multifunction display (MFD) is equipped with two automatic memories:
1 - Trip memory and 2 - Total journey memory.
The number of the current memory on display will be shown in the upper
right-hand corner of the displ ...
Diesel particulate filter
First read and observe the introductory information
and safety warningsThe diesel particulate filter filters out soot particles
in the exhaust gas. The soot particles gather in the filter and are burnt under
high temperatures periodically (regeneration). Heat produced can
warm the engine.
...