2010 Mercedes ML-Class Owner's Manual - Page 68

66 Anti-theft systems over-/understeering, thus improving vehicle traction. Activating X ESP® trailer stabilization If the trailer you are towing should begin to sway, the rig can only be stabilized by immediately applying the brakes hard. Steering during this maneuver will not help to stabilize the rig. The ESP® will assist you in such situations. The ESP® recognizes when the trailer starts swaying and will apply the brakes to reduce the vehicle speed to a non-critical speed that allows the vehicle-trailer combination to stabilize. The ESP® trailer stabilization is functional at vehicle speeds above approximately 40 mph (65 km/h) when the ESP® is switched on. Safety and security With SmartKey: Remove the SmartKey from the starter switch. X With KEYLESS-GO: Turn off the engine and open the driver's door. Deactivating X Switch on the ignition. i Starting the engine will also deactivate the immobilizer. In the event that the engine cannot be started (yet the vehicle's battery is charged), the system is not operational. Contact an authorized Mercedes-Benz Center or call 1-800-FOR-MERCedes (in the USA) or 1-800-387-0100 (in Canada). Anti-theft alarm system Once the alarm system has been armed, a visual and audible alarm is triggered when someone opens Ra G Warning! The system will not be able to assist when the trailer jackknifes Rif the ESP® has switched off due to a malfunction wet or icy roads roads with slippery surface Ron Ron Rin door tailgate hood Rthe Rthe sand or gravel Trailers with a high center of gravity may tip over before the system recognizes swaying of the trailer. The alarm will stay on even if the activating element, a door, for example, is closed immediately. The alarm system will also be triggered when Rthe vehicle is opened with the mechanical Anti-theft systems Immobilizer The immobilizer prevents unauthorized persons from starting your vehicle. When leaving the vehicle, always take the SmartKey with you and lock the vehicle. The engine can be started by anyone with a valid SmartKey that is left inside the vehicle. key Ra door is opened from the inside To cancel the alarm after it has been triggered, see "Canceling the alarm" (Y page 67).