* Wiper switch malfunction. The wiper switch may be malfunctioning, causing the wipers to stay on regardless of the selected delay setting.
* Faulty wiring. There may be a short circuit or other electrical wiring issue that is causing the wipers to stay on continuously.
* Faulty delay relay. The delay relay is responsible for controlling the interval between wiper cycles. If it is faulty, it can cause the wipers to operate continuously or at irregular intervals.
* Wiper motor malfunction. The wiper motor itself may be malfunctioning, causing it to run continuously regardless of the switch setting.
