BMW Z4 Roadster Owner's Handbook Manual page 127

While the vehicle is in motion
General
Use during the journey serves as an emergency
brake.
Pull and hold the switch. Vehicle brakes strongly
for as long as the switch is pulled.
The indicator lamp in the instrument
cluster is illuminated red, a signal sounds
and the brake lights illuminate.
A Check Control message is shown.
Apply the parking brake when the vehicle is sta‐
tionary.
Releasing
Releasing manually
1. Switch on drive-ready state.
2. Steptronic transmission: press the
switch with the brake pedal depressed or se‐
lector lever position P engaged.
LED and indicator lamp turn off.
The parking brake is released.
Automatic release
The parking brake is automatically released on
driving off.
LED and indicator lamp turn off.
Automatic Hold
Principle
This system provides assistance by automatically
applying and releasing the brake, for example in
stop-and-go traffic.
The vehicle is held automatically when at a
standstill.
On upward gradients, rolling back is prevented
when driving off.
Online Edition for Part no. xxx - X/18
Driving
General
The parking brake is automatically applied if the
following conditions are met:
▷ Drive-ready state is switched off.
▷ The driver's door is opened with the vehicle
at a standstill.
▷ The parking brake is used to brake to a
standstill during the journey.
Display
The indicator lamp changes from green
to red.
Safety notes
WARNING
An unsecured vehicle can start moving and roll‐
ing away. There is a danger of accidents. Be‐
fore leaving the vehicle, secure it to prevent it
from rolling away.
Observe the following to ensure that the vehi‐
cle is secured against rolling away:
▷ Apply the parking brake.
▷ Turn the front wheels towards the kerb on
upward or downward gradients.
▷ Additionally secure the vehicle on upward
or downward gradients, for example with a
chock.
WARNING
Unsupervised children or pets in the vehicle
can set the vehicle in motion and endanger
themselves or other road users, for example by
the following actions:
▷ Pressing the start/stop button.
▷ Release the parking brake.
▷ Opening and closing doors or windows.
▷ Engaging selector lever position N.
▷ Operating vehicle equipment.
CONTROLS
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