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Checking the battery
Press the or button. The battery is working properly if battery check lamp 1 lights up briefly If battery check lamp 1 does not light up briefly during the test, the battery is discha ...

Functions available during a call
Overview Telephone operation with a single call 1 Person you are calling 2 Icon for active telephone connection 3 NEW to call other parties 4 To switch hands-free microphone on/off 5 T ...

Installing the ball coupling
WARNING If the vehicle/trailer combination is not secured, the trailer may come loose. As a result, you could cause an accident. Observe the ball coupling manufacturer's installation inst ...