Method for starting a motor vehicle and a vehicle electrical system suitable for carrying it out

摘要

For vehicles with automatic gears and for electric vehicles it is known, after an ignition-like starter request, to join the enabling of the starting of the engine or motor with the condition that the mode-selection lever is in a neutral, inactive position in order to prevent the vehicle moving away immediately during starting with forward travel or backward travel selected. In the new method, after the start request, a fault diagnosis is initially carried out on the components of the vehicle electrical system, after its determination the position of the accelerator pedal is determined. If the accelerator pedal is not in the neutral position at this time, the starting of the engine or motor is blocked until the accelerator pedal is in the neutral position again, after which the starting of the engine or motor is enabled. As a result, the vehicle is prevented from unexpectedly starting up with an acceleration jolt as a result of a previously executed accelerator pedal activation after the fault diagnosis has terminated. To be used for example to start an electric vehicle.