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Problem
Possible causes/consequences and MM Solutions
The engine is not run-
ning smoothly and is
misfiring.
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 con-
verter and damage it.
X
Have the cause rectified immediately at a qualified specialist
workshop.
The coolant tempera-
ture gauge shows a
value above 248 ‡
(120 †). The warning
lamp may also be on
and a warning tone may
sound.
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 276). Observe the warning notes
as you do so and add coolant if necessary.
Notes on towing vehicles
The vehicle is not suitable for attaching tow
bar systems, such as those used for flat tow-
ing or dinghy towing.
Attaching or using tow bar systems may result
in damage to the vehicle.
When towing a vehicle with tow bar systems,
safe driving characteristics cannot be guaran-
teed for the towing vehicle or the towed vehi-
cle.
The vehicle/trailer combination may swerve.
Observe the permissible towing methods
(Y page 300) and the notes on towing with
both axles on the ground (Y page 300).
DYNAMIC SELECT button (all vehi-
cles except Mercedes-AMG vehicles)
Use the DYNAMIC SELECT button 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 sound of the exhaust system (vehicles
with sports exhaust system)
R
the steering
R
the availability of the ECO start/stop func-
tion
R
the climate control
Each time you start the engine with the Smart-
Key or the Start/Stop button, drive program C
is activated. For further information about
starting the engine, see (Y page 126).
X
Press DYNAMIC SELECT button : as 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 and the status symbol of
the selected drive program appears.
In addition, the current drive program set-
tings are displayed briefly in the multimedia
system display.
i
In a few countries, the ECO start/stop
function is deactivated at the factory due to
the available fuel grade. In this case, the
ECO start/stop function is not available in
any drive program, regardless of the display
in the multimedia system display.
132
DYNAMIC SELECT button (all vehicles except Mercedes-AMG vehicles)
Driving and parking
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