2007 Mercedes GL-Class Owner's Manual - Page 364

Operation Driving instructions Do not stop vehicle while immersed in water, and do not shut off the engine. Crossing obstacles When driving over tree stumps, big rocks and other obstacles, observe the following rules: Make sure the off-road driving program ( page 279) or if equipped the LOW RANGE mode* ( page 203) is switched on. Avoid high engine speeds. Shift automatic transmission to position 1 ( page 200). ! Do not open any of the vehicle's doors while driving through water. Water could otherwise enter the vehicle interior and damage the vehicle's electronics, as well as the interior equipment. There is a very high level of driving resistance in water. The surface is slippery and may not be firm, making pulling away in water difficult and dangerous. Make sure that only small bow waves are formed when driving the vehicle through water. Clean mud off the tire tread after driving through water. To dry the brakes, apply pressure to the brake pedal several times while driving after leaving the water. ! Obstacles can damage the vehicle underbody or suspension components. If possible use the assistance of a second person outside the vehicle to scout the path you intend to take and check for adequate ground clearance when you cross obstacles with your vehicle. The person assisting you outside the vehicle should always be a safe distance away from the vehicle and positioned so that he or she cannot get hurt in case of any unexpected vehicle movement. After off-road driving or crossing obstacles, inspect vehicle for any damage, especially vehicle underbody and suspension components. Failure to do so can adversely affect the vehicle's future performance, including increased chance of an accident. Check the vehicle clearance before crossing obstacles. Cross obstacles (e.g. tree stumps or big rocks) very slowly by aiming one of the front wheels at the center of the obstacle, and repeat same with the rear wheel. ! Special attention is needed when you cross obstacles on a steep incline. The vehicle could slide sideways as a result of its possible slanted position which in turn may result in the vehicle tipping or rolling over. 363