Volvo XC90: Lighting / Brake lights. Emergency brake lights
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.
Emergency brake lights
The emergency brake lights are activated to warn following vehicles of hard
braking.
This function causes an additional taillight on each side of the vehicle to
illuminate.
The emergency brake lights are activated in the event of hard braking or if the
ABS system is activated and the vehicle is traveling at a high speed.
After the driver decelerates to a low speed and then releases the brake, the
brake lights resume their normal brightness.
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...
Hazard warning flashers warn other road users by all of the vehicle's turn
signals being activated at the same time. The function can be used to warn about
a traffic hazard...
Other information:
When connecting a trailer, make sure that all of the lights on the trailer
are functioning before starting to drive.
Trailer turn signals and brake lights
If one or more of the turn signals or brake lights on the trailer is not working,
a symbol and message will be displayed in the instrument panel...
(Option/accessory.)
The BLIS1 function is designed to help provide assistance in heavy
traffic with several lanes moving in the same direction by helping the driver to
detect the presence of vehicles in the "blind spot" area behind and to the side
of the vehicle...