Mercedes-Benz S-Class 2011 Operator's Manual page 83

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.
You have lost the
SmartKey.
You have lost the
mechanical key.
Possible causes/consequences and M Solutions
The SmartKey battery is discharged or nearly discharged.
X
Point the tip of the SmartKey at the driver's door handle from a
distance of approximately 1.5 ft (50 cm) and try to unlock or
lock the vehicle again.
If this does not work:
X
Check the SmartKey battery and replace it if necessary
( Y page 80).
X
Y
Lock ( page 84) or unlock (
the mechanical key.
The SmartKey is faulty.
X
Lock ( Y page 84) or unlock (
the mechanical key.
X
Have the SmartKey checked at a qualified specialist workshop.
KEYLESS-GO is in standby mode because the vehicle has not been
unlocked for an extended period.
X
Pull the door handle twice and then insert the SmartKey into the
ignition lock.
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 the SmartKey checked at a qualified specialist workshop.
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.
X
Have the SmartKey canceled at an authorized Mercedes-Benz
Center.
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.
SmartKey
Y
page 84) the vehicle using
Y page 84) the vehicle using
81
Z