2011 Mercedes R-Class Owner's Manual - Page 74

72 Anti-theft systems X To stop the alarm using KEYLESS-GO: grasp the outside door handle. The key must be outside the vehicle. The alarm is switched off. Press the Start/Stop button on the dashboard. The key must be inside the vehicle. The alarm is switched off. Safety or X X To arm: lock the vehicle with the SmartKey or KEYLESS-GO. The turn signal lamps flash three times to indicate that the vehicle is locked. Indicator lamp : flashes to indicate that the alarm system is armed. i If the turn signal lamps do not flash three times, a door or the tailgate may not be properly closed. It may be necessary to close the affected door or the tailgate. X To deactivate: unlock the vehicle using the key or KEYLESS-GO. The turn signal lamps flash once to indicate that the anti-theft alarm system is switched off. i Unless you open a door or the trunk lid within 40 seconds after unlocking the vehicle: vehicle will be locked again. anti-theft alarm system will be rearmed. X To stop the alarm using the SmartKey: insert the key into the ignition lock. The alarm is switched off. or X Press the % or & button on the key. The alarm is switched off. Rthe Rthe