Starting and driving › Starting issues 125
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.
NOTICE
Risk of engine overheating!
Do not switch the engine off immediately at the
end of your journey after the engine has been run-
ning at high loads. Leave it to run at an idling speed
for about 1 minute.
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START STOP
Usage
Starting issues
Troubleshooting
The START-STOPP system reduces polluting emis-
sions and the CO2emissions and saves fuel.
NOTICE
Danger of engine damage!
Functionality
Do not start the vehicle by towing.
▶
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.
The engine does not start
Switch off the ignition.
Wait 30 seconds and repeat the starting proce-
dure.
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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.
If the engine does not start, use the jump start ca-
›
bles with the 12 volt vehicle battery of another ve-
hicle » page 157 or seek the help of a specialist ga-
rage.
A system-related engine start occurs when the
clutch pedal is pressed down.
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.
Vehicle with automatic transmission
A system-related engine switch-off occurs when the
brake pedal is actuated and the engine is stopped.
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A system-related engine start takes place after re-
leasing the brake pedal.
The key cannot be turned in the ignition
Status display in the instrument cluster display
- Engine is switched off via the START-STOPP
system
Move the steering wheel back and forth while
turning the key.
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Starting is not possible with the starter button, the
system did not detect the key
illuminates
- Engine is not switched off via the START-
STOPP system due to operating conditions
that are not met
Press the starter but-
ton with the key.
Display of detailed information in the infotainment
screen
›
Vehicle status
If the engine does not
start, seek the help of a
specialist garage.
›
Or:
Vehicle status
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 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
The driver must fulfil the following conditions.
Hold the starter button or press twice.
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✓ The driver's door is closed.
✓ The driver has fastened the seat belt.
✓ The driving speed was higher than 4 km/h after
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 last stop.
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