2007 Mercedes GL-Class Owner's Manual - Page 109

Safety and Security Driving safety systems For more information, see "Practical hints" ( page 435). Off-road - ESP® With the off-road driving program switched on ( page 279), or with the transmission in LOW RANGE* mode ( page 203), the ESP® designed for off-road use is automatically activated. At speeds below 27 mph (45 km/h), the ESP® assists in over-/understeering, thus improving vehicle traction. 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. ESP® will assist you in such situations. 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. Warning Warning! G When the ESP® warning lamp v is illuminated continuously, the ESP® is switched off or is not operational due to a malfunction. Adapt your speed and driving to the prevailing road conditions and to the non-operating status of the ESP®. G The system will not be able to assist when the trailer jackknifes on wet or icy roads on roads with slippery surface in sand or gravel Trailers with a high center of gravity may tip over before the system recognizes swaying of the trailer. ! Avoid spinning of a drive wheel for an extended period of time with the ESP switched off. This may cause serious damage to the drivetrain which is not covered by the Mercedes-Benz Limited Warranty. ® Switching on the ESP® Press ESP® switch 1. The ESP® warning lamp v in the instrument cluster goes out. You are now again in normal driving mode. i If the ESP® has switched off due to a malfunction, ESP® cannot stabilize the rig. 108