VOLVO XC70 2009 Owners Manual
Page 111 of 286
03 Your driving environment
Brakes
03
111
ing gently for a short period while the vehicle is
moving.Emergency Brake AssistanceEBA is designed to provide full brake effect
immediately in the event of sudden, hard brak-
ing. The system is activated by the speed with
which the brake pedal is depressed.
When the EBA system is activated, the brake
pedal will go down and pressure in the brake
system immediately increases to the maximum
level. Maintain full pressure on the brake pedal
in order to utilize the system completely. EBA
is automatically deactivated when the brake
pedal is released.
NOTE
•
When the EBA system is activated, the
brake pedal will go down and pressure
in the brake system immediately increa-
ses to the maximum level. You must
maintain full pressure on the brake
pedal in order to utilize the system com-
pletely. There will be no braking effect if
the pedal is released. EBA is automati-
cally 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.
Symbols in the instrument panelSymbol
SpecificationSteady glow – Check the brake
fluid level. If the level is low, fill
with brake fluid and check for
the cause of the brake fluid
loss.Steady glow for two seconds
when the engine is started –
There was a fault in the brake
system's ABS function when
the engine was last running.
WARNING
If
and
come on at the same
time and the brake level is below the MIN
mark in the reservoir or if a brake system-
related message is shown in the information
display:
DO NOT DRIVE
. Have the vehicle
towed to a trained and qualified Volvo serv-
ice technician and have the brake system
inspected.
ProCarManuals.com
Page 112 of 286
03 Your driving environmentHill Descent Control (HDC)
03112
Introduction
1
Normally, when the accelerator pedal is
released while driving down hills, the vehicle's
speed slows as the engine runs at lower rpm
(the normal engine braking effect). However, if
the downhill gradient becomes steeper and if
the vehicle is carrying a load, speed increases
despite the engine braking effect. In this situa-
tion, the brakes must be applied to reduce the
vehicle's speed.
HDC is a type of automatic engine brake and
makes it possible to increase or decrease the
vehicle's speed on downhill gradients using
only the accelerator pedal, without applying
the brakes. The brake system functions auto-
matically to maintain a low and steady speed.
HDC is particularly useful when driving down
steep hills with rough surfaces, and where the
road may have slippery patches.
WARNING
HDC does not function in all situations, and
is a supplementary braking aid. The driver
has full responsibility for driving in a safe
manner.
Function
G017426
•
HDC can be switched on and off with the
button in the center console. An indicator
light in the button illuminates when HDC is
activated.
•
The indicator light
in the instru-
ment panel illuminates and a message is
displayed when the system is controlling
the vehicle's speed.
•
HDC only functions when first or reverse
gears are selected (
1 will be shown in the
instrument panel display when first gear is
selected).
NOTE
HDC cannot be activated if the gear selector
is the D position.Using HDCHDC allows the car to roll forward at a maxi-
mum speed of 6 mph (10 km/h), and 4 mph
(7 km/h) in reverse. However, the accelerator
pedal can be used to select any speed that is
possible in first or reverse gears. When the
accelerator pedal is released, speed is quickly
reduced again to 6 mph (10 km/h) or 4 mph
(7 km/h), depending on the gear selected,
regardless of the hill's gradient. It is not nec-
essary to apply the brakes.•
The brake lights illuminate automatically
when HDC is controlling the vehicle's
speed.
•
The driver can slow or stop the vehicle at
any time by applying the brakes.
HDC is deactivated when:
•
The button on the center console is
pressed
•
A gear higher than first gear is selected
•
D is selected on vehicles with an automatic
transmission
1HDC is only available on the XC70, on which it is standard equipment.
ProCarManuals.com
Page 113 of 286
03 Your driving environment
Hill Descent Control (HDC)
03
113
HDC can be deactivated at any time. If this is
done while driving down a steep hill, the sys-
tem's braking effect will decrease gradually.
NOTE
Engine response to pressure on the accel-
erator pedal may be slightly slower than
normal when HDC is activated.
ProCarManuals.com
Page 114 of 286
03 Your driving environmentParking brake
03114
Electric parking brakeAn electric parking brake has the same func-
tion as a manual parking brake.
NOTE
•
A faint sound from the parking brake's
electric motor can be heard when the
parking brake is being applied. This
sound can also be heard during the
automatic function check of the parking
brake.
•
The brake pedal will move slightly when
the electric parking brake is applied or
released.
Low battery voltageIf the battery voltage is too low, the parking
brake cannot be applied or released. Connect
an auxiliary battery if the battery voltage is too
low, see page 105.
Applying the electric parking brake
G021354
Parking brake control1. Press firmly on the brake pedal.
2. Push the control.
3. Release the brake pedal and ensure that
the vehicle is at a standstill.
4. When the vehicle is parked, the gear selec-
tor must be in position P.
The
symbol in the instrument panel
flashes while the parking bake is being applied,
and glows steadily when the parking brake has
been fully applied.
NOTE
•
In an emergency the parking brake can
be applied when the vehicle is moving
by holding in the control. Braking will be
interrupted when the accelerator pedal
is depressed or the control is released.
•
An audible signal will sound during this
procedure if the vehicle is moving at
speeds above 6 mph (10 km/h).
Parking on a hill•
If the vehicle is pointing uphill, turn the front
wheels so that they point away from the
curb.
•
If the vehicle is pointing downhill, turn the
front wheels so that they point toward the
curb.
ProCarManuals.com