Mercedes-Benz 2009 R-Class Operator's Manual page 310

Practical hints
Vehicle status messages in the multifunction display
Display messages
ESP Unavailable
See Operator's
Manual
ESP Unavailable
See Operator's
Manual
ESP Unavailable
See Operator's
Manual
308
Possible cause/consequence
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.
The self-diagnosis might not be
completed yet.
Possible solution
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.
The display will clear after driving a short distance
at a vehicle speed of above 12 mph (20 km/h).