Mercedes-Benz S-Class Saloon W223 2021 Owner's Manual page 193

Have the key 1 checked at a qualified spe-
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cialist workshop.
If the vehicle does not start:
Leave the key 1 in the cup holder 2.
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Depress the brake pedal and start the vehicle
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using the start/stop button.
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You can also switch on the power supply or
the ignition with the start/stop button.
Observe the information regarding display mes-
sages that can be displayed on the driver display.
Starting the vehicle via Remote Online Services
▌Cooling or heating the vehicle interior before
starting the journey
Ensure the following before starting the engine:
the legal stipulations in the area where your
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vehicle is parked allow engine starting via
smartphone.
it is safe to start and run the engine where
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your vehicle is parked.
the fuel tank is sufficiently full.
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the starter battery is sufficiently charged.
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▌Charging the starter battery before starting the
journey
If the vehicle battery is discharged, you can
receive a message on your smartphone. You can
then start the vehicle with the smartphone to
charge the battery. The vehicle is automatically
switched off after ten minutes.
Ensure the following before starting the engine:
the legal stipulations in the area where your
R
vehicle is parked allow engine starting via
smartphone.
it is safe to start and run the engine where
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your vehicle is parked.
the fuel tank is sufficiently full.
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▌Starting the vehicle (Remote Online)
& WARNING Risk of crushing or entrapment
due to unintentional starting of the engine
Limbs could be crushed or trapped if the
engine is started unintentionally during service
or maintenance work.
P223 0288 02
Driving and parking 191
Always secure the engine against unin-
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tentional starting before carrying out
maintenance or repair work.
Requirements:
Park position j is selected.
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The anti-theft alarm system is not activated.
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The panic alarm is not activated.
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The hazard warning light system is switched
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off.
The bonnet is closed.
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The doors are closed and locked.
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The windows and sliding sunroof are closed.
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Start the vehicle using the smartphone.
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After every engine start, the engine runs for
ten minutes.
You can carry out a maximum of two consecutive
starting attempts. You must start the engine with
the key before trying to start the engine again
with the smartphone.