Problems with the SmartKey
Problem
Possible causes/consequences and
M
Solutions
You can no longer lock or
unlock the vehicle using
the SmartKey.
The SmartKey battery is discharged or nearly discharged.
X
Check the SmartKey battery (
Y
page 76) and replace it if necessary
(
Y
page 76).
If this does not work:
X
Unlock (
Y
page 80) or lock (
Y
page 80) the vehicle using the
mechanical key.
There is interference from a powerful source of radio waves.
X
Unlock (
Y
page 80) or lock (
Y
page 80) the vehicle using the
mechanical key.
The SmartKey is faulty.
X
Unlock (
Y
page 80) or lock (
Y
page 80) the vehicle using the
mechanical key.
X
Have the SmartKey checked at a qualified specialist workshop.
You can no longer lock or
unlock the vehicle using
KEYLESS-GO.
KEYLESS-GO was deactivated.
X
Reactivate KEYLESS-GO (
Y
page 73).
The SmartKey battery is discharged or nearly discharged.
X
Check the SmartKey battery (
Y
page 76) and replace it if necessary
(
Y
page 76).
If this does not work:
X
Unlock (
Y
page 80) or lock (
Y
page 80) the vehicle using the
mechanical key.
There is interference from a powerful source of radio waves.
X
Unlock (
Y
page 80) or lock (
Y
page 80) the vehicle using the
mechanical key.
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 con-
trol function:
X
Unlock (
Y
page 80) or lock (
Y
page 80) the vehicle using the
mechanical key.
X
Have the vehicle and SmartKey checked at a qualified specialist
workshop.
SmartKey
77
Opening
and
closing
Z
Summary of Contents for E-Class Cabriolet 2016
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