Locking and unlocking centrally
The SmartKey centrally locks/unlocks:
• the doors
• the tailgate
• the fuel filler flap
1 
Locks the vehicle
2 
Opens/closes the tailgate
3 
Unlocks the vehicle
When unlocking, the turn signals flash once.
When locking, they flash three times.
When it is dark, the surround lighting also comes on if it is activated in the on-board computer.
You can also set an audible signal to confirm that the vehicle has been locked or unlocked.
The audible signal can be activated and deactivated using the on-board computer.
► To unlock centrally: press the
button.
If you do not open the vehicle within approximately 40 seconds of unlocking:
• the vehicle is locked again.
• the theft deterrent locking system is armed
again.
► To lock centrally: press the
button.
See also:
Driving
Important safety notes
WARNING
Make sure absolutely no objects are
obstructing the pedals' range of movement.
Keep the driver's footwell clear of all
obstacles. If there are any floor ...
Switching off the manual drive program
Vehicles with the dynamic
handling
package: press the program selector
button. M is no longer shown
in the multifunction display.
AMG vehicles: turn the drive
program
selector until C, ...
Brake fluid level
If you notice that the brake
fluid level in
the brake fluid reservoir has fallen to the
MIN mark or less, check the brake system
immediately for leaks. Also check the
thickness of the brake ...