Mercedes-Benz 2016 GL Operator's Manual page 90

SmartKey
88
Problem
The engine cannot be
started using the
SmartKey.
The engine cannot be
started using KEYLESS-
GO. The SmartKey is in
the vehicle.
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 Solutions
The on-board voltage is too low.
Switch off non-essential consumers, e.g. seat heating or interior
X
lighting, and try to start the engine again.
If this does not work:
Check the starter battery and charge it if necessary
X
( page 394).
Y
or
Jump-start the vehicle (
X
or
Consult a qualified specialist workshop.
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
Possible causes/consequences and 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 and replace it if necessary
X
( page 85).
Y
Unlock ( page 92) or lock (
X
Y
mechanical key.
The SmartKey is faulty.
Unlock ( page 92) or lock (
X
Y
mechanical key.
Have the SmartKey checked at a qualified specialist workshop.
X
KEYLESS-GO was deactivated.
Reactivate KEYLESS-GO (
X
page 395).
Y
page 92) the vehicle using the
Y
page 92) the vehicle using the
Y
page 83).
Y