Mercedes-Benz GL-Class 2012 Owners Manual - Manual (Page 251)

Display messages Possible causes/consequences and M Solutions
Æ
Being lowered Max.
12 MPH
The vehicle is being lowered from off-road level 3 to off-road level
2. The display message informs you of the maximum speed
permissible for off-road level 3.
X Do not drive faster than 12 mph (20 km/h) until off-road level 2
has been reached.
8
Locking System
Inoperative
Service Required
The differential locks are defective.
X Do not drive faster than 50 mph (80 km/h).
X Have the vehicle checked at a qualified specialist workshop.
8
Diff. Lock System
Overheated - Wait
briefly.
The differential locks are too hot and have been disengaged.
X Drive on carefully.
X Allow the differential locks to cool down.
The differential locks reengage as soon as they have cooled
down.
8
Stop vehicle,
engage parking
brake
A gearshift process has been canceled. LOW RANGE is in the
neutral position. There is no connection between the engine and
the drive wheels.
X Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.
X Engage the parking brake. Do not continue driving under any
circumstances.
X Repeat the gearshift process.
Å
Service Required
If parked engage
pk. brake
LOW RANGE is malfunctioning.
X Do not drive faster than 50 mph (80 km/h).
X Engage the parking brake to park.
X Have the vehicle checked at a qualified specialist workshop.
Å
Max. Speed 25 MPH
You have exceeded the maximum speed for the gearshift process.
X Drive slower.
The gearshift process is carried out.
Å
Max. Speed 40 MPH
You have exceeded the maximum speed for the gearshift process.
X Drive slower.
The gearshift process is carried out.
Å
Shift briefly into
N
You have reduced the vehicle speed, but the automatic
transmission is not in position
N.
X Briefly shift the automatic transmission to position N.
Display messages
249
On-board computer and displays
Z