Volvo 2009 S60 - Manual (Page 136)

06 Starting and driving
Brake system
06
136
Anti-lock brakes (ABS)
If the warning lamp lights up there
is a malfunction of the ABS system
(the standard braking system will
however function) and the vehicle
should be driven cautiously to a
trained and qualified Volvo service technician
for inspection. The Anti-lock Braking System
(ABS) helps to improve vehicle control (stop-
ping and steering) during severe braking con-
ditions by limiting brake lockup. When the
system "senses" impending lockup, braking
pressure is automatically modulated in order to
help prevent lockup, which could lead to a skid.
The system performs a self-diagnostic test
when the engine is started and when the
vehicle first reaches a speed of approxi-
mately 12 mph (20 km/h). The brake pedal will
pulsate several times and a sound may be
audible from the ABS control module. This is
normal.
To obtain optimal effect from the ABS system,
constant pressure should be kept on the brake
pedal. Do not pump the brake pedal.
The switching of the ABS modulator will be
audible and the brake pedal will pulsate during
braking. Please be aware that ABS does not
increase the absolute braking potential of the
vehicle. While control will be enhanced, ABS
will not shorten stopping distances on slippery
surfaces.
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.
3. If both warning lights go off, no further
action is required.
WARNING
If the fluid level is below the MIN mark in the
reservoir or if a "
Brake failure - Service
urgent " message is displayed in the text
window: DO NOT DRIVE . Have the vehicle
towed to a trained and qualified Volvo serv-
ice technician and have the brake system
inspected.
4. If both lights are still on after the engine has
been restarted, switch off the engine again
and check the brake fluid level (see
page 193 for the location of the brake fluid
reservoir).
5. If the brake fluid level is above the MIN
mark, drive carefully to a trained and quali-
fied 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.