Mercedes-Benz GLA 180 Owner's Manual page 87

Key
84
Problems with the key
Problem
You can no longer lock or
unlock the vehicle using
the key.
You can no longer lock or
unlock the vehicle using
KEYLESS-GO.
Possible causes/consequences and M M Solutions
The key battery is weak or discharged.
Vehicles without KEYLESS-GO or KEYLESS-GO start function:
X
try again to lock/unlock the vehicle using the remote control func-
tion 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:
Check the key battery (
X
( page 82).
Y
Unlock ( page 88) or lock (
X
Y
emergency key element.
There is interference from a powerful source of radio waves.
Vehicles without KEYLESS-GO or KEYLESS-GO start function:
X
try again to lock/unlock the vehicle using the remote control func-
tion 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:
Unlock ( page 88) or lock (
X
Y
emergency key element.
The key is faulty.
Unlock ( page 88) or lock (
X
Y
emergency key element.
Have the key checked at a qualified specialist workshop.
X
The key battery is weak or discharged.
Check the key battery (
X
( page 82).
Y
If this does not work:
Unlock ( page 88) or lock (
X
Y
emergency key element.
There is interference from a powerful source of radio waves.
Unlock ( page 88) or lock (
X
Y
emergency key element.
page 82) and replace if necessary
Y
page 88) the vehicle using the
Y
page 88) the vehicle using the
Y
page 88) the vehicle using the
Y
page 82) and replace if necessary
Y
page 88) the vehicle using the
Y
page 88) the vehicle using the
Y