Brake Functions - Volvo XC 90 Owner's Manual

STARTING AND DRIVING
||
WARNING
If both symbols illuminate at the same time
and the brake level is below the MIN mark in
the reservoir or if a brake system-related mes-
sage is shown in the instrument panel: DO
NOT DRIVE. Have the vehicle towed to a
trained and qualified Volvo service technician
and have the brake system inspected.
If both symbols illuminate at the same time
and the brake level is normal (not below the
MIN mark in the reservoir) or if a brake sys-
tem-related message is shown in the instru-
ment panel: drive the vehicle carefully to an
authorized Volvo workshop and have the
brake system inspected by a trained and
qualified Volvo service technician.
Related information
•
Brake functions (p. 326)
•
Brake assist system (p. 327)
•
Emergency brake lights (p. 328)
326

Brake functions

The vehicle's standard braking features are aug-
mented by a number of auxiliary help functions.
In addition to the wheel brakes and the parking
brake, the vehicle is equipped with several auto-
matic brake assist functions. These systems help
the driver by e.g., keeping the vehicle stationary
when the brake pedal is not depressed (at a traf-
fic light or intersection), when starting up a hill or
when driving down a hill.
These systems include:
•
Auto-hold brakes
•
Hill Start Assist
•
Braking assist after a collision
•
Hill Descent Control*
Related information
•
Brakes (p. 324)
•
Parking brake (p. 329)
•
Hill Descent Control (HDC) (p. 328)
•
Auto-hold brake function (p. 326)
Auto-hold brake function
With the Auto-hold brake function, the driver can
release the brake pedal and the brakes will
remain applied, for example, when the vehicle
has stopped at a traffic light or intersection.
When the vehicle is no longer moving forward,
Auto-hold applies the brakes automatically, either
using the normal brakes or the parking brake.
The brakes will be released when the accelerator
pedal is depressed.
If the driver's door is opened or the engine is
turned off, the parking brake will be applied auto-
matically.
Auto-hold control
Auto-hold control and indicator light
Turn Auto-hold on or off by pressing the control
in the tunnel console. The indicator light illumi-
nates when the function is on.
* Option/accessory, for more information, see Introduction.