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:
Using snow chains and/or snow tires can help improve traction in winter driving
conditions.
Volvo does not recommend use of snow chains on wheel dimensions larger than 19
inches
WARNING
Use Volvo genuine snow chains or equivalent snow chains that are suitable
for the vehicle model and the tire and wheel sizes...
(Option/accessory.)
The Park Assist function (PAS1) can be activated or deactivated.
Park Assist's front and side sensors are automatically activated when the engine
is started. The rear sensors are activated if the vehicle is moving backward or
reverse gear is engaged...