Patent ID: 7640903

Claim:
Device for adjusting a rotational angle position of a camshaft of a reciprocating piston internal combustion engine relative to a crankshaft in a motor vehicle, comprising an adjustment gear mechanism, which is constructed as a triple-shaft gear mechanism with a crankshaft-fixed drive shaft, a camshaft-fixed output shaft, and an adjustment shaft drivingly connected to an electric motor that can be positioned by an electric control device, wherein an ignition of the internal combustion engine can be connected via an ignition switch to a battery of the motor vehicle, and the motor vehicle also has at least one device that can be adjusted by a user of the motor vehicle, the at least one device has a monitoring circuit with at least one sensor for detecting a state change of the at least one device, and when the control device is turned off, the monitoring circuit is connected to the control device, such that the control device is turned on when a state change is detected to initiate a system check and to initialize a starting position of the adjustment gear mechanism.