Mercedes-Benz C 250 Coupe, Operator'S Manual

Page: 76 / 336

Problems with the SmartKey
Problem Possible causes/consequences and
M
Solutions
You cannot lock or
unlock the vehicle
using the SmartKey. The SmartKey battery is discharged or nearly discharged.
X
Try again to lock/unlock the vehicle using the remote control
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:
X
Check the SmartKey battery (
Y
page 72) and replace it if
necessary (
Y
page 72).
X
Lock (
Y
page 77) or unlock (
Y
page 77) the vehicle using
the mechanical key.
The SmartKey is faulty.
X
Lock (
Y
page 77) or unlock (
Y
page 77) the vehicle using
the mechanical key.
X
Have the SmartKey checked at a qualified specialist workshop.
You can no longer lock
or unlock the vehicle
using KEYLESS-GO. There is interference from a powerful source of radio waves.
X
Lock/unlock the vehicle using the remote control function of
the SmartKey. Point the tip of the SmartKey at the driver's door
handle from close range and press the
%
/
&
button.
There is a malfunction with KEYLESS-GO.
X
Lock/unlock the vehicle using the remote control function of
the SmartKey. Point the tip of the SmartKey at the driver's door
handle from close range and press the
%
/
&
button.
X
Have KEYLESS-GO checked at a qualified specialist workshop.
If this does not work:
X
Check the SmartKey battery (
Y
page 72) and replace it if
necessary (
Y
page 72).
X
Lock (
Y
page 77) or unlock (
Y
page 77) the vehicle using
the mechanical key.
You have lost a
SmartKey.
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.
You have lost the
mechanical key.
X
Report the loss immediately to the vehicle insurers.
X
If necessary, have the locks changed as well.
74
SmartKey
Opening/closing