Mercedes-Benz B-Class Electric Drive Operator's Manual page 80

SmartKey
78
Problem
The drive system can-
not be started using the
SmartKey.
The drive system can-
not be started using the
Start/Stop button. The
SmartKey is in the vehi-
cle.
Possible causes/consequences and M Solutions
KEYLESS-GO is malfunctioning.
Lock/unlock the vehicle using the remote control function of
X
the SmartKey.
Have the vehicle and SmartKey checked at a qualified specialist
X
workshop.
If the vehicle can also not be locked/unlocked using the remote
control function:
Unlock ( page 80) or lock (
X
Y
mechanical key.
Have the vehicle and SmartKey checked at a qualified specialist
X
workshop.
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 drive system again.
If this does not work:
Check the 12 V battery and charge it if necessary (
X
or
Check the high-voltage battery and charge it if necessary
X
( page 141).
Y
or
Jump-start the vehicle (
X
or
Consult a qualified specialist workshop.
X
The vehicle is locked.
Unlock the vehicle and try to start the vehicle again.
X
The SmartKey battery is discharged or nearly discharged.
Check the SmartKey battery (
X
essary ( page 75).
Y
If this does not work:
Start your vehicle with the SmartKey in the ignition lock.
X
There is interference from a powerful source of radio waves.
Start your vehicle with the SmartKey in the ignition lock.
X
page 81) the vehicle using the
Y
page 292).
Y
page 75) and replace it if nec-
Y
page 289).
Y