2003 Mercedes ML-Class Owner's Manual - Page 86

Controls in detail Locking and unlocking ! If you can no longer lock or unlock the vehicle with the remote control, then the batteries in the remote control are discharged, the remote control is malfunctioning or the vehicle battery is drained. Use the folding key to unlock or lock the doors and the liftgate. Check the vehicle battery ( page 261). Replace batteries ( page 243). Synchronize the remote control ( page 244). If the remote control is malfunctioning, contact an authorized Mercedes-Benz Light Truck Center. Loss of remote control with folding key If you lose a remote control or the folding key, you should do the following: Have the remote control deactivated by an authorized Mercedes-Benz Light Truck Center. Report the loss of the remote control or the folding key immediately to your car insurance company. If necessary have the mechanical lock replaced. Your authorized Mercedes-Benz Light Truck Center will be glad to supply you with a replacement. Opening the doors from the inside You can open a locked door from the inside. Open door only when conditions are safe to do so. 1 Locking knob 2 Inside door handle Pull on door handle 2. If a door was locked, locking knob 1 will move up. 86