Mercedes-Benz SLC 300 2019 Operator's Manual page 72

SmartKey
70
Problems with the SmartKey
Problem
You can no longer lock
or unlock the vehicle
using the SmartKey.
You can no longer lock
or unlock the vehicle
using KEYLESS-GO.
Possible causes/consequences and M M Solutions
The SmartKey battery is discharged or nearly discharged.
Check the SmartKey battery (
X
sary ( page 69).
Y
If this does not work:
Unlock ( page 73) or lock (
X
Y
mechanical key.
There is interference from a powerful source of radio waves.
Unlock ( page 73) or lock (
X Y
mechanical key.
The SmartKey is faulty.
Unlock ( page 73) or lock (
X
Y
mechanical key.
Have the SmartKey checked at a qualified specialist workshop.
X
KEYLESS-GO was deactivated.
Reactivate KEYLESS-GO (
X
The SmartKey battery is discharged or nearly discharged.
Check the SmartKey battery (
X
sary ( page 69).
Y
If this does not work:
Unlock ( page 73) or lock (
X
Y
mechanical key.
There is interference from a powerful source of radio waves.
Unlock ( page 73) or lock (
X
Y
mechanical key.
KEYLESS-GO is malfunctioning.
Lock/unlock the vehicle using the remote control function of the
X
SmartKey.
Have the vehicle and SmartKey checked at a qualified specialist
X
workshop.
If the vehicle can also not be locked/unlocked using the remote
control function:
Unlock ( page 73) or lock (
X
Y
mechanical key.
Have the vehicle and SmartKey checked at a qualified specialist
X
workshop.
page 69) and replace it if neces-
Y
page 73) the vehicle using the
Y
page 73) the vehicle using the
Y
page 73) the vehicle using the
Y
page 66).
Y
page 69) and replace it if neces-
Y
page 73) the vehicle using the
Y
page 73) the vehicle using the
Y
page 73) the vehicle using the
Y