Mercedes-Benz Black Series Operator's Manual page 68

SmartKey
66
Problems with the SmartKey
Problem
You cannot lock or
unlock the vehicle
using the SmartKey.
You have lost a
SmartKey.
You have lost the
mechanical key.
The engine cannot be
started using KEYLESS-
GO. The SmartKey is in
the vehicle.
Possible causes/consequences and M Solutions
The SmartKey battery is discharged or nearly discharged.
Point the tip of the SmartKey at the driver's door handle from
X
close range. Try to unlock or lock the vehicle again.
If this does not work:
Unlock the vehicle using the mechanical key (
X
Check the SmartKey battery and replace it if necessary
X
( page 65).
Y
The SmartKey is faulty.
Lock or unlock the vehicle using the mechanical key
X
( page 64).
Y
Have the SmartKey checked at a qualified specialist workshop.
X
Have the SmartKey canceled at an authorized Mercedes-Benz
X
Center.
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.
X
A door is open. Therefore, the SmartKey cannot be detected as
easily.
Close the door and try to start the vehicle again.
X
There is interference from a powerful source of radio waves.
Start your vehicle with the SmartKey in the ignition lock.
X
page 64).
Y