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Problem
Possible causes/consequences and MM Solutions
Vehicles with a gasoline
engine:
The engine is not running
smoothly and is misfir-
ing.
There is a malfunction in the engine electronics or in a mechanical
component of the engine management system.
X
Only depress the accelerator pedal slightly.
Otherwise, non-combusted fuel may get into the catalytic converter
and damage it.
X
Have the cause rectified immediately at a qualified specialist work-
shop.
The coolant temperature
gage shows a value
above 248 ‡ (120 †).
The coolant level is too low. The coolant is too hot and the engine is no
longer being cooled sufficiently.
X
Stop as soon as possible and allow the engine and the coolant to
cool down.
X
Check the coolant level (Y page 324). Observe the warning notes
as you do so and add coolant if necessary.
DYNAMIC SELECT controller
Plug-in hybrid: observe the notes on the
DYNAMIC SELECT controller in the separate
operating instructions.
Use the DYNAMIC SELECT controller to change
the drive program. Depending on the drive pro-
gram selected the following vehicle character-
istics will change:
R
the drive (engine and transmission manage-
ment)
R
the transmission
R
the suspension
R
the steering
R
the availability of the ECO start/stop function
Each time you start the engine with the Smart-
Key or the Start/Stop button, the Comfort drive
program is activated. For further information
about starting the engine, see (Y page 136).
The Comfort drive program is recommended in
city traffic and stop/start traffic situations.
X
All vehicles (except Mercedes-AMG vehi-
cles): turn DYNAMIC SELECT controller : as
many times as necessary until the desired
drive program is selected.
The selected drive program appears in the
multifunction display. After five seconds, this
information disappears from the display.
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
142
DYNAMIC SELECT controller
Driving and parking
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