1. Faulty Wiper Switch: The wiper switch, located on the turn signal lever, could be defective or loose, causing the wipers to stay on continuously. Check the wiper switch; its contacts may be dirty or worn, inhibiting its ability to turn off the wipers.
2. Wiper Relay Failure: The wiper relay is responsible for controlling the flow of electricity to the wiper motor. If the relay fails, it can cause the wipers to stay on even when the switch is turned off. Look for corrosion, cracks, or loose connections in the relay.
3. Defective Wiper Motor: Failure of the wiper motor itself can also prevent the wipers from switching off. Check the motor for any signs of damage or wear, such as a burnt-out coil, loose connections, or worn-out brushes.
4. Faulty Wiring: Examine the wiring related to the wiper system for any breaks, shorts, or loose connections. Damaged wiring can cause the wipers to malfunction or stay on even when they shouldn't.
5. Stalk Assembly Issues: The turn signal/wiper stalk assembly may have internal issues, such as faulty contacts or a broken spring, keeping the wipers in the on position.
If you lack the expertise or tools to troubleshoot and fix the issue yourself, it's best to take your vehicle to a qualified mechanic or an authorized Fiat service center. They can accurately diagnose and resolve the problem, ensuring the safe operation of your vehicle's wipers.