Display messages
Possible causes/consequences and
M
M
Solutions
!
Parking brake inop‐
Parking brake inop‐
erative
erative
The yellow
!
warning lamp lights up. The red
!
indicator lamp
flashes for about ten seconds after the electric parking brake has been
applied or released. It then goes out or remains lit.
The electric parking brake is malfunctioning, e.g. because of over-
voltage or undervoltage.
X
Rectify the cause of the overvoltage or undervoltage, e.g. by charg-
ing the battery or restarting the drive system.
X
Apply or release the electric parking brake.
If the electric parking brake still cannot be applied or released:
X
Switch off the ignition and turn it back on.
X
Apply or release the electric parking brake.
If the electric parking brake still cannot be released:
X
Consult a qualified specialist workshop.
If it is still not possible to apply the electric parking brake:
X
Consult a qualified specialist workshop.
The red
!
indicator lamp flashes and the yellow
!
warning lamp
is lit.
It is not possible to apply the electric parking brake manually.
X
Shift the transmission to position P.
X
Consult a qualified specialist workshop.
J
Brake immediately
Brake immediately
A malfunction has occurred while the HOLD function is active.
A tone may also sound at regular intervals. If you attempt to lock the
vehicle, the tone becomes louder.
You cannot start the drive system.
X
Paying attention to the traffic situation, immediately depress the
brake pedal firmly and hold until the display message disappears.
X
Safeguard the vehicle against rolling away (
Y
page 145).
You can start the drive system again.
J
Check brake fluid
Check brake fluid
level
level
There is insufficient brake fluid in the brake fluid reservoir.
In addition, the red
J
warning lamp lights up in the instrument
cluster and a warning tone sounds.
G
WARNING
Braking efficiency may be impaired.
There is a risk of an accident.
X
Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions. Do not continue driving
under any circumstances.
X
Safeguard the vehicle against rolling away (
Y
page 145).
X
Consult a qualified specialist workshop.
X
Do not top up the brake fluid. This does not correct the fault.
Display messages
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