21 Keys, locks and alarm system ›  Central locking All doors Single door Turn off the SAFE function DANGER Doors on one side of the vehicle In the display of the instrument cluster after the igni- tion is switched off, a message regarding the SAFE function is displayed. Unlocking of all doors, the boot lid and the fuel filler flap. Using the button on the key, the driver's door and the fuel filler flap are unlocked. In vehicles equipped with a keyless locking system, the door near to which the key is located and the fuel filler flap are unlocked by touching the door han- dle. Risk of death! Or: When unlocked again, the other doors and the boot lid are unlocked. The warning light in the driver's door will flash for about 2 seconds in quick succession after the vehicle is locked, then goes out and starts flashing regularly at longer intervals after about 30 secs. Using the button on the key, the doors on the driv- er’s side and the fuel filler flap are unlocked. In vehicles equipped with a keyless locking system, the doors on the passenger’s side near to which the key is located and the fuel filler flap are unlocked by touching the door handle. When the SAFE function is switched off, the door can be opened from the inside by pulling once on the opening lever. When unlocked again, the other doors and the boot lid are unlocked. The SAFE function is switched on again after unlock- ing and locking the vehicle. ▶ No people are allowed in the locked vehicle with the SAFE function. ▶ By double locking within 2 seconds. ▶ Together with the deactivation of the interior mon- itoring » page 23,  Settings . ▶ Key » page 20 ▶ Keyless locking (KESSY)» page 22. ▶ Central locking button › Press the button in the centre console. ▶ The warning light in the driver's door first flashes for 2 secs in quick succession. ▶ Then it lights up continuously. WARNING Troubleshooting Central locking fault Lock/unlock using the central locking button Operation Ways in which central locking operates WARNING All doors and the boot lid are locked when a speed of 15 km/h is reached. Automatic locking after starting Unlocking of the vehicle takes place when opening a door from the inside or when removing the key from the ignition. Depending upon vehicle equipment: An automatically locked vehicle makes it difficult for responders to enter the vehicle in an emergency. The symbol in the button comes on when locked. The button locks/unlocks all of the doors and the boot lid. Unlocking of the vehicle also takes place when open- ing a door from the inside or when removing the key from the ignition. A locked vehicle with a central locking button makes it difficult for responders to enter the vehicle in an emergency. Or: ▶ After 30 secs, it flashes slowly. › Seek the help of a specialist garage. Setting the unlocking and locking function › In Infotainment, select the following menu: