Problem
Possible causes/consequences and
M
M
Solutions
The engine cannot be
started using the Smart-
Key.
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 284).
or
X
Jump-start the vehicle (
Y
page 285).
or
X
Consult a qualified specialist workshop.
The engine cannot be
started using KEYLESS-
GO. The SmartKey is in
the vehicle.
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 neces-
sary (
Y
page 77).
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.
You have lost a Smart-
Key.
X
Have the SmartKey deactivated at a qualified specialist work-
shop.
X
Report the loss immediately to the vehicle insurers.
X
If necessary, have the locks changed as well.
You have lost the
mechanical key.
X
Report the loss immediately to the vehicle insurers.
X
If necessary, have the locks changed as well.
The side windows can-
not be opened or closed
using the convenience
opening/closing fea-
ture.
The SmartKey battery is discharged or nearly discharged.
X
Check the SmartKey battery (
Y
page 77) and replace it if neces-
sary (
Y
page 77).
Doors
Important safety notes
G
WARNING
If children are left unsupervised in the vehi-
cle, they could:
R
operate the vehicle's equipment
Additionally, children could set the vehicle in
motion if, for example, they:
R
release the parking brake
R
shift the automatic transmission out of
park position
j
R
start the engine
There is a risk of an accident and injury.
Doors
79
Opening
and
clo
sing
Z
Summary of Contents for SL 450 2019
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