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Problem
The coolant temperature
display is showing more
than 120 †. The coolant
warning lamp may also
be on and a warning tone
may sound.
DYNAMIC SELECT controller
Use the DYNAMIC SELECT controller to change
the drive program. Depending on the drive pro-
gram selected, the following vehicle character-
istics will change:
the drive (engine and transmission manage-
R
ment)
the transmission
R
the suspension
R
the steering
R
the availability of the ECO start/stop function
R
If the ignition is switched off for less than four
hours, the previously selected drive program is
activated when the engine is next started. If the
ignition is switched off for more than four hours,
the Comfort drive program is activated when
the engine is next started.
All vehicles (except Mercedes-AMG vehi-
X
cles): turn DYNAMIC SELECT controller : as
Possible causes/consequences and M M Solutions
The coolant level is too low. The coolant is too hot and the engine is no
longer being cooled sufficiently.
Stop as soon as possible and allow the engine and the coolant to
X
cool down.
Check the coolant level (
X
as you do so and top up the coolant if necessary.
If the coolant level is correct, the radiator fan may be faulty. The cool-
ant is too hot and the engine is no longer being cooled sufficiently.
If the coolant temperature is below 120 †, you can continue driving
X
to the nearest qualified specialist workshop.
Avoid heavy loads on the engine as you do so, e.g. driving in moun-
X
tainous terrain and stop-start traffic.
DYNAMIC SELECT controller
page 335). Observe the warning notes
Y
many times as necessary until the desired
drive program is selected.
The selected drive program appears in the
multifunction display. After five seconds the
display goes out.
In addition, the current drive program settings
are displayed in the multimedia system dis-
play.
Drive programs available (all vehicles
except Mercedes-AMG vehicles):
Individual
Individual settings
Sport
Sporty driving characteris-
tics
Comfort
Comfortable and economi-
cal driving characteristics
Slippery
Optimal driving characteris-
tics on slippery or snow-
covered roads
Off-road
Optimal driving characteris-
tics for easily negotiable off-
road terrain
Offroad Plus
Optimal driving characteris-
(vehicles with
tics for rough terrain
Off-Road Engi-
neering pack-
age)
155
Z
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