The light switch is in the or position.
Please observe the country-specific laws on the use of rear fog lamps.
Vehicles with AIRMATIC or E-ACTIVE BODY CONTROL with off-road package: when the rear fog light is switched on, off-road level +3 will not be available. If the rear fog light is switched on and off-road level +3 is activated, the vehicle will be lowered to off-road level +2.