Important notes on the use of KEYLESS-GO
• The KEYLESS-GO key can be used like a
conventional key.
• You can combine KEYLESS-GO functions
with those of a conventional key, e.g. unlock with KEYLESS-GO and lock with the
button.
• Always carry your KEYLESS-GO key on your
person.
• Do not keep the KEYLESS-GO key together
with:
- electronic devices, e.g. a mobile phone
or another key
- metallic objects, e.g. coins or metal foil.
This can affect the functionality of
KEYLESS-GO.
• When locking and unlocking using
KEYLESS-GO, the distance between the
SmartKey and the corresponding door
handle must not exceed 3 ft (1 m).
• If the vehicle is parked for more than
72 hours, the KEYLESS-GO function is
deactivated. Pull the outer door handle and
switch on the ignition to reactivate the
KEYLESS-GO function.
• If the KEYLESS-GO key is removed from the
vehicle, it is possible that the system may
not recognize the SmartKey. The vehicle
can then not be locked or started using
KEYLESS-GO.
• If the KEYLESS-GO key has been removed
from the vehicle, e.g. if a passenger leaves
the vehicle with a KEYLESS-GO key:
- if the start/stop button is pressed or if
an attempt is made to lock the vehicle
with the locking button on the outer door
handle, the Key Not Detected message
appears in the multifunction display
- when the engine is running, the red Key
Not Detected message appears in the
multifunction display as you pull away.
Find the KEYLESS-GO key and change its
position in the vehicle. Carry the
KEYLESS-GO key in your shirt pocket, for
example.
• If you have started the engine with the
Start/Stop button, you can switch it off
again by:
- pressing the Start/Stop button again
- inserting the KEYLESS-GO key into the
ignition lock if the vehicle is stationary
and the automatic transmission is in park
position P.
• You could unlock the vehicle by mistake if
the distance between the KEYLESS-GO key
and the vehicle is less than 3 ft (1 m) and:
- an exterior door handle is hit by a water jet
or
- you clean an exterior door handle.
• Bear in mind that the engine can be started
by any of the vehicle occupants if there is
a KEYLESS-GO key in the vehicle.

To unlock the vehicle: pull the door
handle.
To lock the vehicle: touch sensor
surface 1.
Convenience closing feature: touch
recessed sensor surface 2 for an
extended period.
If you pull on the handle of the trunk lid, only the trunk of the vehicle is unlocked.
See also:
Cleaning the steering wheel and gear or selector lever
Thoroughly wipe with a damp cloth or use
leather care agents that have been
recommended and approved by Mercedes-
Benz. ...
Driving systems
Problem
Possible causes/consequences and
Solutions
The red
distance warning lamp lights up while the vehicle is in motion. A
warning tone also sounds.
Risk of accide ...
Important safety notes
We recommend that all infants and children
be properly secured in an infant or child
restraint system at all times while the vehicle
is in motion.
The use of seat belts and infant and child
r ...
