Mercedes-Benz CLA-Class 2015 - Manual (Page 82)

Problem Possible causes/consequences and M M Solutions
KEYLESS-GO is malfunctioning.
X
Lock/unlock the vehicle using the remote control function of
the SmartKey.
X
Have the vehicle and SmartKey checked at a qualified specialist
workshop.
If the vehicle can also not be locked/unlocked using the remote
control function:
X
Unlock (
Y
page 83) or lock (
Y
page 83) the vehicle using the
mechanical key.
X Have the vehicle and SmartKey checked at a qualified specialist
workshop.
The engine cannot be
started using the
SmartKey.
The on-board voltage is too low.
X Switch off non-essential consumers, e.g. seat heating or interior
lighting, and try to start the engine again.
If this does not work:
X
Check the starter battery and charge it if necessary
(
Y
page 307).
or
X Jump-start the vehicle (
Y
page 309).
or
X
Consult a qualified specialist workshop.
The engine cannot be
started using the Start/
Stop button. The
SmartKey is in the vehi-
cle.
The vehicle is locked.
X
Unlock the vehicle and try to start the vehicle again.
The SmartKey battery is discharged or nearly discharged.
X Check the SmartKey battery (
Y
page 77) and replace it if nec-
essary (
Y
page 78).
If this does not work:
X
Start your vehicle with the SmartKey in the ignition lock.
There is interference from a powerful source of radio waves.
X
Start your vehicle with the SmartKey in the ignition lock.
80
SmartKey
Opening
and
closing