Audi A4 - Electro-Mechanical Parking Brake

Driving 121
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start running again after some time if the coolant temperature rises
due to a build-up of heat, or if the engine is hot and the engine
compartment is heated up further by direct sunlight.
Electro-mechanical parking brake
Operation
The electro-mechanical parking brake replaces the hand-
brake.
– Pull switch ⇒ fig. 132 to apply the parking brake. The
indicator lamp in the switch will light up.
– Depress the brake or accelerator pedal and press the
switch at the same time to release the parking brake. The
indicator lamp in the switch will go out.
Your vehicle is equipped with an electro-mechanical parking brake.
The parking brake replaces the conventional handbrake, and is
mainly intended to prevent the vehicle from rolling away acciden-
tally.
However, the electro-mechanical parking brake also offers a number
of convenience and safety features in addition to the functions of a
normal handbrake.
When driving away
• The parking brake auto release function releases the parking
brake automatically when you wish to start moving ⇒ page 122,
“Driving away from a standstill”.
• When driving away on a gradient, the parking brake auto release
function prevents the vehicle from rolling back unintentionally. The
braking force of the parking brake is only released when there is
enough power at the wheels to make the vehicle move in the desired
direction.
Emergency braking function
An emergency braking function enables you to stop the vehicle even
if the conventional foot brake should fail to work ⇒ page 123,
“Emergency braking function”.
Warning and indicator lamps
• The warning lamps  in the instrument cluster and in the switch
light up when the parking brake is applied with the ignition
switched on.
• The warning lamps  in the instrument cluster and switch light
up for approximately 20 seconds when the parking brake is applied
with the ignition switched off.
WARNING
Never press the accelerator pedal or release the clutch inadvert-
ently if a gear is engaged or if the selector lever is not in position
P or N (on automatic vehicles) while the vehicle is stationary with
the engine running. The vehicle could otherwise start moving
immediately and possibly cause an accident.
Caution
If the symbol  flashes in the centre display, or if the warning lamp
 flashes in the instrument cluster, there is a fault in the brake
system. You can press the button to obtain a message
explaining the fault. If the message Parking brake! appears, there is
Fig. 132 Centre
console: Parking brake
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document_0900452a81b1b9de.book Seite 121 Donnerstag, 26. Juli 2007 9:16 09