Mercedes-Benz SLC 2018 Operator's Manual page 72

Doors
70
Problem
The engine cannot be
started using the Smart-
Key.
The engine cannot be
started using KEYLESS-
GO. The SmartKey is in
the vehicle.
You have lost a Smart-
Key.
You have lost the
mechanical key.
The side windows cannot
be opened or closed
using the convenience
opening/closing fea-
ture.
Doors
Important safety notes
G
WARNING
If children are left unsupervised in the vehicle,
they could:
operate the vehicle's equipment.
R
Possible causes/consequences and M Solutions
The on-board voltage is too low.
Switch off non-essential consumers, e.g. seat heating or interior
X
lighting, and try to start the engine again.
If this does not work:
Check the starter battery and charge it if necessary (
X
or
Jump-start the vehicle (
X
or
Consult a qualified specialist workshop.
X
The vehicle is locked.
Unlock the vehicle and try to start the vehicle again.
X
The SmartKey battery is discharged or nearly discharged.
Check the SmartKey battery (
X
( page 68).
Y
If this does not work:
Start your vehicle with the SmartKey in the ignition lock.
X
There is interference from a powerful source of radio waves.
Start your vehicle with the SmartKey in the ignition lock.
X
Have the SmartKey deactivated at a qualified specialist workshop.
X
Report the loss immediately to the vehicle insurers.
X
If necessary, have the locks changed as well.
X
Report the loss immediately to the vehicle insurers.
X
If necessary, have the locks changed as well.
X
The SmartKey battery is discharged or nearly discharged.
Check the SmartKey battery (
X
( page 68).
Y
page 253).
Y
page 68) and replace it if necessary
Y
page 68) and replace it if necessary
Y
Additionally, children could set the vehicle in
motion if, for example, they:
release the parking brake
R
shift the automatic transmission out of park
R
position P
start the engine
R
There is a risk of an accident and injury.
Never leave children or animals unattended in
the vehicle.
page 253).
Y