Loss - Mercedes-Benz R-Class Owner's Manual

Problems with the key
Problem
You cannot lock or
unlock the vehicle
using the key.
You can no longer lock
or unlock the vehicle
using KEYLESS-GO.
You have lost a key.
Possible causes/consequences and M Solutions
The key battery is discharged or nearly discharged.
X
Try again to lock/unlock the vehicle using the remote control
function of the key. Point the tip of the key at the driver's door
handle from close range and press the % or & button.
If this does not work:
X
Check the key battery (
( Y page 73).
X
Lock ( Y page 78) or unlock (
the emergency key element.
The key is faulty.
X
Lock ( Y page 78) or unlock (
the emergency key element.
X
Have the key 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 key into the igni-
tion lock.
There is interference from a powerful source of radio waves.
X
Lock/unlock the vehicle using the remote control function of
the key. Point the tip of the key at the driver's door handle from
close range and press the % / & button.
There is a fault with KEYLESS-GO.
X
Lock/unlock the vehicle using the remote control function of
the key. Point the tip of the key 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 key battery (
( Y page 73).
X
Y
Lock ( page 78) or unlock (
the emergency key element.
X
Have the key deactivated at a qualified specialist workshop.
X
Report the loss immediately to the vehicle insurers.
X
If necessary, have the locks changed as well.
Y page 73) and replace it if necessary
Y page 77) the vehicle using
Y page 77) the vehicle using
Y page 73) and replace it if necessary
Y
page 77) the vehicle using
Key
75
Z