Keyless-go
General notes
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.
Locking/unlocking centrally
You can start, lock or unlock the vehicle using
KEYLESS-GO. To do this, you only need carry
the SmartKey with you. You can combine the
functions of KEYLESS-GO with those of a
conventional SmartKey. Unlock the vehicle
by using KEYLESS-GO, for instance, and lock
it using the 
button on the SmartKey.
When locking or unlocking with KEYLESS-GO, the distance between the SmartKey and the corresponding door handle must not be greater than 3 ft (1 m).
KEYLESS-GO checks whether a valid
SmartKey is in the vehicle by periodically
establishing a radio connection between the
vehicle and the SmartKey. This happens:
• when the external door handles are
touched
• when starting the engine
• while the vehicle is in motion
■ To unlock the vehicle: touch the inner surface of the door handle.
■ To lock the vehicle: touch sensor surface 1.
■ Convenience closing feature: touch recessed sensor surface 2 for an extended period.
Further information on the convenience closing feature .
If you pull on the handle of the tailgate, only the cargo compartment of the vehicle is unlocked.
See also:
DEF (BlueTEC vehicles only)
Important notes on use
To function properly, BlueTEC exhaust gas
aftertreatment must be operated with the
reducing agent DEF.
When the supply of DEF is almost used up,
the Check Additive See Op ...
Tires
...
Service and literature
Your vehicle is covered under the terms of the
warranties printed in the Service and
Warranty Information booklet. Your
authorized Mercedes-Benz Center will
exchange or repair any defective parts
...