Volvo XC90: Lighting / Rear fog light
The rear fog light is considerably brighter than ordinary taillights and should
only be used to help other road users see the vehicle when visibility is reduced
by conditions such as fog, snow, smoke or dust.

Rear fog light button.
The fog lights are located on the right and left sides of the rear of the vehicle.
The rear fog light can only be used when:
- ignition mode II is active and the lighting ring is in position
or

- the lighting ring is in the
position and the front fog lights are on.
Press the button to switch on/off. The
symbol in the instrument panel illuminates
when the rear fog light is on.
The rear fog light turns off automatically when:
- the ignition is off or the lighting ring is in the
position.
- the lighting ring is in the
position and the front fog lights are turned off.
NOTE
Regulations concerning rear fog light use vary from country to country.
(Option/accessory)
The fog lights can be activated manually when driving in fog and are activated
automatically when backing up to help augment the backup light...
The brake lights are automatically illuminated when braking.
The brake lights are illuminated when the brake pedal is depressed and when the
brakes are automatically applied by a driver support system...
Other information:
It may be necessary to drive the vehicle through standing water e.g. deep
puddles or flooding on the road. This must be done with great caution.
The vehicle can be driven through water up to a depth of 45 cm (17 in) at no
more than walking speed. Be particularly careful when driving through flowing water...
Information on vehicles with activated hazard warning flashers or which have
detected slippery road conditions is not always communicated between all vehicles
in the affected area.
This may be the case if:
No or insufficient Internet connection.
The maneuvers (steering wheel movements, acceleration or braking) made by
the vehicles on slippery surfaces are too weak for friction between the t..