Mercedes-Benz M-Class 2012 Owners Manual - Manual (Page 246)

Display messages Possible causes/consequences and M Solutions
The display message is only shown while the vehicle is in motion.
The yellow ! warning lamp lights up and the red F (USA
only)/ ! (Canada only) indicator lamp flashes.
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)
Turn On the
Ignition to
Release the
Parking Brake
The red F (USA only)/ ! (Canada only) indicator lamp lights
up.
You attempted to release the electric parking brake while the
ignition was switched off.
X SmartKey: turn the SmartKey to position 1 in the ignition lock.
X
KEYLESS-GO: switch on the ignition.
$
(USA
only)
J
(Canada
only)
Check Brake Fluid
Level
G Risk of accident
There is not enough brake fluid in the brake fluid reservoir.
Additionally, the red $ (USA only)/ J (Canada only)
warning lamp lights up in the instrument cluster and a warning
tone sounds.
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
Engage the electric parking brake.
X
Consult a qualified specialist workshop.
X Do not add brake fluid. This will not rectify the malfunction.
G WARNING
Driving with the message Check Brake Fluid Level displayed can result in an accident. Have
your brake system checked immediately.
Do not add brake fluid before checking the brake system. Overfilling the brake fluid reservoir can
result in spilling brake fluid on hot engine parts and the brake fluid catching fire. You can be
seriously burned.
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Display messages
On-boar
d
compu
ter
and
disp
lays