2005 Mercedes G-Class Owner's Manual - Page 300

Practical hints What to do if ... Display Display message ESP NOT AVAILABLE Possible cause The charging voltage has fallen below 10 volts and the ESP has switched off. Possible solution When the voltage is above this value again, the ESP is operational again. If necessary, have the generator (alternator) and battery checked. ESP The ESP is deactivated because of a malfunction or interrupted power supply. The ABS and BAS might not be operational. The system must be resynchronized. Synchronize the ESP. With vehicle stationary and the engine running, turn the steering wheel completely to the left and then to the right to synchronize the ESP. If the ESP message does not go out: Continue driving with added caution. Visit an authorized Mercedes-Benz Light Truck Center as soon as possible. Failure to follow these instructions increases the risk of accident. ! When synchronizing the ESP, make sure you can turn the steering wheel in both directions as far as it will go without the wheels hitting any objects, e.g. a road curb. 300