Jetta A4 Cruise board indicator

Hello everyone, my car A4 mod. 2003 clash a few months after and changed the radiator for a new one and some collision parts, but the Motosr Detail that in that black box listens a sound like a tac-tac- thus constant and I do not know, can help me please and if some manual to know more about my car and so for another doubt to be clearer and the alerts of the board

Check the main cables for what you say it can be a loose or poorly connected cable, mainly check the mass cables that go to the body and the motor, or test with an auxiliary cable and connect it directly from the negative of the battery to the engine and see what it does.-