BMW Z4 Roadster Owner's Handbook Manual page 144

CONTROLS
General
Indicator and warning lamps can illuminate in a
variety of combinations and colours.
When drive-ready state is switched on, the func‐
tionality of some lights is checked and they illu‐
minate briefly.
Red lights
Seat belt reminder
The driver's side seat belt is not fas‐
tened. With some country specifications:
the front passenger seat belt is not fas‐
tened or objects are detected on the front pas‐
senger seat.
Check whether the seat belt has been fastened
correctly.
Airbag system
Airbag system and belt tensioner may be
faulty.
Immediately have the vehicle checked by
a Service Partner of the manufacturer or another
qualified Service Partner or a specialist work‐
shop.
Parking brake
The parking brake is engaged.
Release the parking brake, see
page 127.
Brake system
Brake system malfunctioning. Continue
driving at moderate speed.
Immediately have the vehicle checked by
a Service Partner of the manufacturer or another
qualified Service Partner or a specialist work‐
shop.
144
Displays
Yellow lights
Anti-lock Brake System ABS
Have the vehicle checked immediately by a Serv‐
ice Partner of the manufacturer or another quali‐
fied Service Partner or a specialist workshop.
Dynamic Stability Control DSC
Decrease speed and adjust driving style to the
road conditions.
If the indicator lamp is illuminated: DSC has
failed.
Immediately have the system checked by a Serv‐
ice Partner of the manufacturer or another quali‐
fied Service Partner or a specialist workshop.
DSC, see page 186.
Dynamic Stability Control DSC
deactivated, or Dynamic Traction
Control DTC activated
Tyre Pressure Monitor TPM
information in the Check Control message.
The indicator lamp flashes and then illuminates
continuously: no flat tyres or loss of tyre inflation
pressure can be detected.
▷
Online Edition for Part no. xxx - X/18
Braking force boost may be faulty. Avoid
sudden braking. Take into account that
the braking distance will be longer.
If the indicator lamp is flashing: DSC is
regulating the acceleration and braking
forces. The vehicle is being stabilised.
DSC is deactivated or DTC is activated.
DSC, see page 186, and DTC, see
page 188.
The indicator lamp illuminates: the Tyre
Pressure Monitor is reporting a low tyre
inflation pressure or a flat tyre. Note the
Fault due to systems or devices with the
same radio frequency: the system is auto‐