Starting and driving › Starting issues 103
Starting issues
Troubleshooting
START STOP
Usage
The START-STOPSystem reduces polluting emis-
sions and CO2emissions and saves fuel.
NOTICE
Risk of engine damage!
Do not start the vehicle by towing.
▶
The engine does not start
Functionality
Switch off the ignition.
Wait 30 seconds and repeat the starting proce-
dure.
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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.
If the engine does not start, start the vehicle using
another vehicle's battery » page 124 or get help
from a specialist company.
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Vehicle with manual transmission
A system-related engine shutdown takes place when
the vehicle is stopped, when the gear lever is shifted
into neutral and when the clutch pedal is released.
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.
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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 takes place after re-
leasing the brake pedal.
Status display in the instrument cluster display
- Engine is switched off by the START-
STOPSystem
- Engine is switched off by the START-
STOPSystem not switched off due to func-
tional conditions not being met
Display of detailed information in the infotainment
screen
Vehicle status
Or:
Vehicle status
The key might not be detected if the battery in
the key is nearly discharged or the signal is faulty.
Functional conditions
The engine cannot be turned off with the starter
button
Some conditions are system-related and cannot be
influenced or recognized. Therefore, the system may
react differently in situations which seem identical
from the driver's perspective.
Hold the starter button or press twice.
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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 driver must meet 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 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.
the last stop.
✓ No trailer or other accessory is connected to the
trailer socket.
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