Important safety notes
WARNING 
For reasons of safety, have the NECK-PRO
head restraints/NECK-PRO luxury head
restraints checked at an authorized
Mercedes-Benz Center after a rear-end
collision.
WARNING
When pushing back the NECK-PRO head
restraint cushion, make sure your fingers do
not become caught between the head
restraint cushion and the cover. Failure to
observe this could result in injuries.
See also:
Clearing the memory of the integratedgarage door opener on the rear-viewmirror
► Turn the SmartKey to position 2 in the
ignition lock.
► Press transmitter buttons 2 and 4.
The indicator lamp lights up yellow.
► Press and hold transmitter buttons 2 and 4 ...
Activating/deactivating the distancewarning function
This function is only available with
DISTRONIC.
► Press
on the steering wheel
to select the Additional functions menu.
► Press the
button to select the
Distance warning function ...
Sidewall
The part of the tire between the tread and the
bead. ...