Mercedes-Benz R-Class 2012 Owners Manual - Manual (Page 233)

Display messages Possible causes/consequences and M Solutions
DISTRONIC
Inoperative DISTRONIC is defective or the display has failed.
X Visit a qualified specialist workshop.
DISTRONIC
Currently
Unavailable See
Operator's Manual
DISTRONIC is deactivated and is temporarily inoperative if:
R the DISTRONIC cover in the radiator grill is dirty.
R
its function is impaired due to heavy rain, snow or fog.
R
the radar sensor system is temporarily inoperative, e.g. due to
electromagnetic radiation emitted by nearby TV or radio
stations or other sources of electromagnetic radiation.
R
the radar sensor system has not detected any vehicles or
stationary objects, e.g. traffic signs, for a long time.
R
the system is outside the operating temperature range.
DISTRONIC becomes available again and the display message
disappears if:
R the dirt (e.g. slush) drops away while the vehicle is in motion.
R
the system detects that the sensors are fully available again.
R
the system is within the operating temperature range.
If the display message continues to be displayed:
X Clean the DISTRONIC cover in the radiator grill ( Y page 291).
X Restart the engine.
G WARNING
DISTRONIC cannot take weather conditions into account. Switch off DISTRONIC or do not turn
it on if the sensor is dirty or visibility is diminished as a result of snow, rain or fog. The distance
control may be impaired even before the system is able to detect a dirty sensor. The
DISTRONIC
Currently Unavailable See Operator's Manual message will be displayed in the
multifunction display and DISTRONIC will be turned off.
Tires
G WARNING
Do not drive with a flat tire. A flat tire affects the ability to steer or brake the vehicle. You may
lose control of the vehicle. Continued driving with a flat tire will cause excessive heat build-up
and possibly a fire.
G
WARNING
Follow recommended tire inflation pressures.
Do not underinflate tires. Underinflated tires wear excessively and/or unevenly, adversely affect
handling and fuel economy, and are more likely to fail from being overheated.
Display messages
231
On-board computer and displays
Z