2009 Mercedes R-Class Owner's Manual - Page 90

Controls in detail Locking and unlocking X Unlocking driver's door and fuel filler flap: Grasp the driver's outside door handle. Global unlocking: Grasp any outside door handle other than the driver's outside door handle. Global locking: Press lock button 1 on an outside door handle. Loss of the SmartKey If you lose your SmartKey or mechanical key, you should do the following: X Have the SmartKey deactivated by an authorized Mercedes-Benz Center. X X X Report the loss of the SmartKey or the mechanical key to your car insurance company immediately. Have the mechanical lock replaced if necessary. 1 Locking knob 2 Inside door handle X Checking SmartKey batteries X Press button j or k on the SmartKey. Battery check lamp 4 (Y page 85) comes on briefly to indicate that the SmartKey batteries are in order. Any authorized Mercedes-Benz 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. If the battery check lamp does not come on briefly during check, the SmartKey batteries are discharged. X Replace the batteries (Y page 355). i You can obtain the required batteries at any authorized Mercedes-Benz Center. i If the batteries are checked within signal range of the vehicle, pressing button j or k will lock or unlock the vehicle accordingly. If the vehicle has previously been locked with the SmartKey or with KEYLESS-GO, opening a door from the inside will trigger the antitheft alarm system. To cancel the alarm, see (Y page 81). X Front doors: Pull on inside door handle 2 on the respective front door to open door. If the door was locked, locking knob 1 will move up. X X Rear doors: Pull up locking knob 1 on the respective rear door to unlock door. Pull on inside door handle 2 on the respective rear door to open door. 88