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110 Starting and driving ›
Starting issues
Troubleshooting
NOTICE
Danger of engine damage!
Do not start the vehicle by towing.
▶
The engine does not start
›
Switch off the ignition.
›
Wait 30 seconds and repeat the starting proce-
dure.
›
If the engine does not start, use the jump start ca-
bles with the battery of another vehicle
or seek the help of a specialist garage.
The engine does not start, the display shows a
message regarding the immobilizer
›
Use the other vehicle key.
›
If the engine does not start, seek the help of a spe-
cialist garage.
Starting is not possible with the starter button, the
system did not detect the key
›
Insert the key into the cup holder at the front.
›
Press the starter button.
›
If the engine does not start, seek the help of a spe-
cialist garage.
The key might not be detected if the battery in
the key is nearly discharged or the signal is faulty.
The engine cannot be turned off with the starter
button
›
Hold the starter button or press twice.
The radiator fan keeps running even after the en-
gine has stopped
The radiator fan can continue to run for approxi-
mately 10 minutes after the engine is stopped. This is
not a defect.
The engine makes noises after the cold start
The increased running noise is due to the briefly in-
creased engine speed. This is not a defect.
START STOP
Usage
The START STOP system reduces environmentally
damaging emissions, including CO
If the system determine that the engine is not nee-
ded when the vehicle stops, it turns off the engine
and starts it again when moving off.
Starting issues
» page 136
, and saves fuel.
2
Functionality
Vehicle with manual transmission
A system-related engine switch-off occurs when
stopping, when switching the gear lever into the
neutral position, and when releasing the clutch pedal.
A system-related engine start occurs when the
clutch pedal is pressed down.
Vehicle with automatic transmission
A system-related engine switch-off occurs when the
brake pedal is actuated and the engine is stopped.
A system-related engine start occurs when the ac-
celerator pedal is pressed down. When the Auto
Hold function is deactivated, a system-related en-
gine start occurs after releasing the brake pedal.
Status display in the instrument cluster display
Engine is switched off via the START-STOP
system
Engine is not switched off via the START-STOP
system due to operating conditions that are
not met
Operating conditions
Some conditions are systemic and can neither be in-
fluenced nor recognised. Therefore, the system may
react differently in situations which seem identical
from the driver's perspective.
The driver must fulfil the following conditions.
✓ The driver's door is closed.
✓ The driver has fastened the seat belt.
✓ The driving speed was higher than 4 km/h after
the last stop.
Settings
Automatic activation
Upon start-up of the engine.
▶
By selecting driving mode Eco
▶
tion.
Deactivate/activate system
›
Press the
button under the Infotainment.
In the displayed menu in the Infotainment, the func-
tion can be deactivated or activated.
If a system-related engine switch-off occurs and the
system is deactivated, the engine will start.
Troubleshooting
The engine does not switch off when stopping, or
it starts before starting up
The system has detected that the engine is running.
» page 113, Opera-
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