Mercedes-Benz CLA Operator's Manual page 81

Problems with the SmartKey
Problem
You cannot 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.
Vehicles without KEYLESS-GO or KEYLESS-GO start func-
X
tion: try again to lock/unlock the vehicle using the remote con-
trol function of the SmartKey. Point the tip of the SmartKey at
the driver's door handle from close range and press the % or
& button.
If this does not work:
Check the SmartKey battery (
X
essary ( page 78).
Y
Unlock ( page 83) or lock (
X
Y
mechanical key.
There is interference from a powerful source of radio waves.
Vehicles without KEYLESS-GO or KEYLESS-GO start func-
X
tion: try again to lock/unlock the vehicle using the remote con-
trol function of the SmartKey. Point the tip of the SmartKey at
the driver's door handle from close range and press the % /
& button.
If this does not work:
Unlock ( page 83) or lock (
X
Y
mechanical key.
The SmartKey is faulty.
Unlock ( page 83) or lock (
X
Y
mechanical key.
Have the SmartKey checked at a qualified specialist workshop.
X
The SmartKey battery is discharged or nearly discharged.
Check the SmartKey battery (
X
essary ( page 78).
Y
If this does not work:
Unlock ( page 83) or lock (
X
Y
mechanical key.
There is interference from a powerful source of radio waves.
Unlock ( page 83) or lock (
X
Y
mechanical key.
SmartKey
page 77) and replace it if nec-
Y
page 83) the vehicle using the
Y
page 83) the vehicle using the
Y
page 83) the vehicle using the
Y
page 77) and replace it if nec-
Y
page 83) the vehicle using the
Y
page 83) the vehicle using the
Y
79
Z