What is the reason for the EPC light of Volkswagen Tiguan?

This is a normal phenomenon and a self-check phenomenon of the system. Please feel free to use. If the light comes on after parking, you need to check it.

Extended content

The reason why EPC light is on is as follows: EPC light is mainly caused by dirty throttle body, which can be solved by cleaning the throttle and re-matching.

Serious or obvious vacuum leakage is not a problem, only slight leakage can not be effectively detected by the control unit, and the compensation adjustment made by the control unit exceeds the limit allowed by the internal program of the control unit, and the control unit will judge that there is a problem with the electronic throttle system and the EPC fault light will be on; However, the actual reason why the EPC light lights up in this process is not caused by the functional problems of the electronic throttle control system itself, and the failure of the brake light switch can also lead to this phenomenon. It needs on-site inspection to be sure.