Mercedes-Benz C-Class Cabriolet 2018 Operator's Manual page 126

Driving
124
To start the vehicle without actively using the
SmartKey:
the Start/Stop button must be inserted in the
R
ignition lock.
the SmartKey must be in the vehicle.
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the vehicle must not be locked with the
R
SmartKey or KEYLESS-GO. (
Do not keep the SmartKey:
with electronic devices, e.g. a mobile phone
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or another SmartKey.
with metallic objects, e.g. coins or metal foil.
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inside metallic objects, e.g. a metal case.
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This can affect the functionality of the Smart-
Key.
If you lock the vehicle with the SmartKey remote
control or with KEYLESS-GO, after a short time:
you will not be able to switch on the ignition
R
with the Start/Stop button.
you will no longer be able to start the engine
R
with the Start/Stop button until the vehicle is
unlocked again.
If you lock the vehicle centrally using the button
on the front door (
to start the engine with the Start/Stop button.
The engine can be switched off while the vehicle
is in motion by pressing and holding the Start/
Stop button for three seconds. This function
operates independently of the ECO start/stop
automatic engine switch-off function.
Key positions with the Start/Stop button
Start/Stop button
:
Ignition lock
;
As soon as the ignition is switched on, all the
indicator lamps in the instrument cluster light
up. Warning and indicator lamps: see
( page 241).
Y
page 77)
Y
page 82), you can continue
Y
If Start/Stop button : has not yet been
pressed, this corresponds to the SmartKey
being removed from the ignition.
To switch on the power supply: press
X
Start/Stop button : once.
The power supply is switched on. You can now
activate the windshield wipers, for example.
The power supply is switched off again if:
the driver's door is opened and
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you press Start/Stop button : twice when in
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this position
To switch on the ignition: press Start/Stop
X
button : twice.
The ignition is switched on.
The ignition is switched off again if:
you do not start the engine from this position
R
within 15 minutes
you press Start/Stop button : once when in
R
this position
The power supply is switched off again if:
the driver's door is opened and
R
you press Start/Stop button : once when in
R
this position
Removing the Start/Stop button
You can remove the Start/Stop button from the
ignition lock and start the vehicle as normal
using the SmartKey.
It is possible to switch between Start/Stop but-
ton mode and key operation only when the
transmission is in position j.
Remove Start/Stop button : from ignition
X
lock ;.
You do not have to remove the Start/Stop but-
ton from the ignition lock when you leave the
vehicle. You should, however, always take the
SmartKey with you when leaving the vehicle. As
long as the SmartKey is in the vehicle:
the vehicle can be started using the Start/
R
Stop button
the electrically powered equipment can be
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operated