Volvo XC90 Owner's Manual page 158

06 Starting and driving
Brake system
ABS with EBD (Electronic Brake Force
Distribution)
EBD is an integrated part of the ABS system.
EBD regulates the hydraulic pressure to the
rear brakes to help provide optimal braking
capacity. The brake pedal will pulsate during
braking, which is normal.
If the BRAKE and ABS warning lights come
on at the same time, this could indicate a
fault in the brake system.
1. Stop the vehicle in a suitable place and
switch off the engine.
2. Restart the engine.
•
If both warning lights go off, no further
action is required.
•
If both lights are still on after the engine
has been restarted, switch off the engine
again and check the brake fluid level (see
06
page 225 for the location of the brake
fluid reservoir).
WARNING
If the fluid level is below the MIN mark in
Brake failure –
the reservoir or if a
Service urgent
message is displayed in
the text window: DO NOT DRIVE. Have the
vehicle towed to a trained and qualified
Volvo service technician and have the
brake system inspected.
156
•
If the brake fluid level is above the MIN
mark, drive carefully to a trained and
qualified Volvo service technician and
have the brake system inspected.
Emergency Brake Assistance (EBA)
The EBA function is designed to provide full
brake effect immediately in the event of sud-
den, hard braking. The system is activated by
the speed with which you depress the brake
pedal.
NOTE
•
When the EBA system is activated, the
brake pedal will go down and pressure
in the brake system immediately
increases to the maximum level. You
must maintain full pressure on the
brake pedal in order to utilize the sys-
tem completely. There will be no brak-
ing effect if the pedal is released. EBA
is automatically deactivated when the
brake pedal is released.
•
When the vehicle has been parked for
some time, the brake pedal may sink
more than usual when the engine is
started. This is normal and the pedal
will return to its usual position when it
is released.