Advertisement
D3.07
EPB electric parking brake
the parking brake is engaged and released with the specific control on the dashboard, to the left of the steering wheel;
the brake is actuated by an electric motor;
the brake engages automatically when the engine is switched off (Autohold function);
it may be used as an emergency brake with the vehicle in motion. In this case, the system applies the brakes to all four wheels
for as long as the button is kept pressed, dialoguing with the ESP stability control system, which prevents wheel lockup;
ensures optimised brake release dynamics for hill starts with the Automatic Vehicle Holding (AVH) function: when certain
conditions are met, the system keeps the vehicle braked by releasing the brake shoes and callipers at different times, allowing
the driver enough time to move the foot from the brake to the accelerator without the vehicle rolling backwards.
EPB parking brake system layout
A - EPB ECU
B - Equaliser bracket
C - Left hand EPB Bowden cable
D - Right hand EPB Bowden cable
E - Eyebolt on EPB Bowden cable
F - Parking brake lever
G - Parking brake shoes
H - Soundproofing
Disabling the EPB electric parking brake Autohold function
The Autohold function is available only on vehicles with DCT gearbox.
The EPB electric parking brake is engaged automatically at each Key-off, as the Autohold function is always enabled by default.
The following procedure disables the Autohold function to impede automatic engagement of the EPB electric parking brake at Key-
off: no maintenance is possible on the components of the EPB system while the EPB electric parking brake is engaged, as a
result, this procedure is necessary before carrying out any work involving the components of the EPB electric parking brake.
The Autohold function will resume normal operation at the next Key-on, and the EPB electric parking brake will therefore be
automatically engaged at the next Key-off.
Advertisement
