Mercedes-Benz C-Sedan 2014 Owners Manual - Manual (Page 83)

Problem Possible causes/consequences and M Solutions
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 302).
or
X Jump-start the vehicle (
Y
page 306).
or
X Consult a qualified specialist workshop.
The engine cannot be
started using the
SmartKey.
The steering lock is mechanically blocked.
X
Remove the SmartKey and reinsert it into the ignition lock. While
doing this, turn the steering wheel in both directions.
The engine cannot be
started using KEYLESS-
GO. The SmartKey is in
the vehicle.
A door is open. Therefore, the SmartKey cannot be detected as
easily.
X Close the door and try to start the vehicle again.
There is interference from a powerful source of radio waves.
X Start your vehicle with the SmartKey in the ignition lock.
Doors
Important safety notes
G WARNING
If children are left unsupervised in the vehicle,
they could:
R open the doors, thus endangering other
people or road users.
R get out and disrupt traffic.
R operate the vehicle's equipment.
Additionally, children could set the vehicle in
motion if, for example, they:
R release the parking brake.
R shifting the automatic transmission out of
park position P
R Start the engine.
There is a risk of an accident and injury.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. Never
leave children or animals unattended in the
vehicle. Always keep the SmartKey out of
reach of children.
G WARNING
If persons, particularly children are subjected
to prolonged exposure to extreme heat or
cold, there is a risk of injury, possibly even
fatal. Never leave children unattended in the
vehicle.
You should preferably place luggage or loads
in the cargo compartment. Observe the
loading guidelines (
Y
page 262).
Doors
81
Opening
and
closing
Z