Loss - Mercedes-Benz MY17 c-class Operator's Manual

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 Solutions
The SmartKey battery is discharged or nearly discharged.
Check the SmartKey battery (
X
( page 77).
Y
If this does not work:
Unlock ( page 82) or lock (
X
Y
mechanical key.
There is interference from a powerful source of radio waves.
Unlock ( page 82) or lock (
X Y
mechanical key.
The SmartKey is faulty.
Unlock ( page 82) 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
( page 77).
Y
If this does not work:
Unlock ( page 82) or lock (
X
Y
mechanical key.
There is interference from a powerful source of radio waves.
Unlock ( page 82) 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 con-
trol function:
Unlock ( page 82) or lock (
X
Y
mechanical key.
Have the vehicle and SmartKey checked at a qualified specialist
X
workshop.
page 77) and replace it if necessary
Y
page 82) the vehicle using the
Y
page 82) the vehicle using the
Y
page 82) the vehicle using the
Y
page 75).
Y
page 77) and replace it if necessary
Y
page 82) the vehicle using the
Y
page 82) the vehicle using the
Y
page 82) the vehicle using the
Y
SmartKey
79
Z