Mercedes-Benz 2009 M-Class Operator's Manual page 307

Display messages
ESP Inoperative
See Operator's
Manual
ESP Unavailable
See Operator's
Manual
ESP Unavailable
See Operator's
Manual
Vehicle status messages in the multifunction display
Possible cause/consequence
®
In addition, the yellow ESP warning lamp
v comes on.
The brake system is still functioning
normally but due to a malfunction the
®
ESP is unavailable.
The ABS and the BAS may not be
operational.
The brake system still functions normally
but due to insufficient power supply the
®
ESP is unavailable.
®
If the yellow ESP warning lamp v
flashes while driving and this message
appears, the 4-ETS has switched off to
prevent overheating of the drive wheel
brakes.
Possible solution
X
Continue driving with added caution.
X
Have the system checked at an authorized
Mercedes-Benz Center as soon as possible.
Failure to follow these instructions increases the
risk of an accident.
X
Continue driving with added caution.
When the voltage is above the required value
®
again, the ESP is operational again and the
message in the multifunction display should
disappear.
If the message in the multifunction display does
not disappear:
X
Have the alternator and the battery checked.
X
Have the system checked at an authorized
Mercedes-Benz Center as soon as possible.
As soon as the brakes have cooled off, the 4-ETS
switches on again.
The message in the multifunction display
®
disappears and the ESP warning lamp v
goes out.
Practical hints
Z
305