See also:

Changing the battery
You require a CR 2025 3 V cell battery. - Take the mechanical key out of the SmartKey. - Press mechanical key 2 into the opening in the SmartKey in the direction of the arrow until battery t ...

NECK-PRO luxury head restraints
If you have difficulty resetting the NECKPRO luxury head restraints, have this work carried out at a qualified specialist workshop, e.g. an authorized Mercedes- Benz Center. ► Remove res ...

Opening
You can open the trunk lid/tailgate automatically using the SmartKey or the handle in the trunk lid/tailgate. •► Press and hold the button on the SmartKey until the trunk lid/tailgate ...