1, setting problem: there is a setting error in the navigation integrated machine, which makes the left and right turn signals flash at the same time. You can check the setting menu of the navigation integrated machine to ensure that the turn signals are set correctly.
2. Vehicle electrical system problem: The failure of the vehicle's own electrical system will also lead to the abnormality of the turn signal. In this case, check the vehicle's electrical system, including the turn signal switch, relay and line connection.