Will a faulty turn signal affect the engine of the Teana?

[CooperFitz]

The faulty turn signal of the Teana will not affect the car's engine. When the turn signal malfunctions, the primary focus is on checking the related circuits of the turn signal, inspecting whether the central control box has a fault (likely a BCM setting issue) or if the turn signal circuit is short-circuited. Check the anti-theft alarm unit. Open the rear cover of the unit and follow the two brown wires from the connector to locate the relay along the circuit board. Carefully cut with a blade and sand the contacts with sandpaper. Inspect the relay and find that the alarm unit is responsible for the left flash safety. Remove it and observe whether the left light does not flash during an alarm, or if the alarm, turn signal, and hazard lights have no effect. The turn signal is an important indicator light when the vehicle turns, alerting vehicles and pedestrians in front, behind, left, and right to pay attention. The turn signal bulb uses a xenon tube, controlled by a microcontroller circuit, with continuous left and right flashing operation. The turn signal uses a flasher to achieve light blinking, which can be divided into three types: wire-block, capacitor, and electronic.