Mercedes-Benz M-Class 2012 Owners Manual - Manual (Page 245)

Display messages Possible causes/consequences and M Solutions
The yellow ! warning lamp lights up. The red F (USA
only)/ ! (Canada only) indicator lamp flashes for
approximately 10 seconds after the electric parking brake has
been applied or released. It then goes out or remains lit.
The electric parking brake is malfunctioning.
X Switch off the ignition and turn it back on.
X
Engage the electric parking brake.
If it is not possible to engage the electric parking brake:
X
Shift the transmission to P.
X Visit a qualified specialist workshop.
If it is not possible to release the electric parking brake:
X Release the electric parking brake automatically (
Y
page 156).
If the electric parking brake still cannot be released:
X Consult a qualified specialist workshop.
The yellow ! warning lamp lights up. When you release or apply
the electric parking brake manually, the red F (USA
only)/ ! (Canada only) indicator lamp flashes.
The electric parking brake is malfunctioning. It is not possible to
apply the electric parking brake manually.
X Shift the transmission to P.
X Visit a qualified specialist workshop.
F
(USA
only)
!
(Canada
only)
Pkg Brake
Inoperative
The yellow ! warning lamp lights up. The red F (USA
only)/ ! (Canada only) indicator lamp flashes for
approximately 10 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
overvoltage or undervoltage.
X Remove the cause for the overvoltage or undervoltage, e.g. by
charging the battery or restarting the engine.
X Engage or release the electric parking brake.
If it remains impossible to apply or release the electric parking
brake:
X Switch off the ignition and turn it back on.
X Engage or release the electric parking brake.
If the electric parking brake still cannot be released:
X Consult a qualified specialist workshop.
Display messages
243
On-board
computer
and
displays
Z