What are the reasons for the windshield wipers not turning off?

[HarperFitz]

The reason why the windshield wipers cannot be turned off may be due to water droplets falling on the windshield when the automatic mode is activated or the wipers being unable to move. Below is a detailed explanation of the reasons why car windshield wipers may fail to move: 1. Fuse blown: When the fuse is blown, the wipers will not function properly. In this case, the fuse box should be opened to check if the corresponding fuse is blown. If the fuse is blown, it should be replaced promptly. 2. Motor burnt out: The probability of the motor burning out is relatively low. If the wipers emit a slight burnt smell, it is highly likely due to motor damage. Professional repair services should be contacted to inspect and repair the relevant components.

[DiAlina]

The windshield wipers won't turn off after being activated. In my over ten years of driving experience, I've encountered this issue a few times. The most common cause is internal failure of the wiper switch - either the button gets stuck in the ON position or the contacts wear out, preventing signal transmission. Another frequent culprit is welded relay contacts. Since relays control circuit on/off functions, stuck contacts cause continuous current flow, and relays tend to fail in older vehicles. Electrical shorts can also trigger false activation, such as when rainwater seeps into wiring harnesses causing short circuits. My friend once had non-stop wipers due to seized gears in the wiper motor, which eventually overheated and burned out. This not only drains the battery but also accelerates wiper blade wear, dangerously obstructing visibility while driving. If this occurs, immediately pull over to check the switch operation. If unresolved, turn off the engine and disconnect the battery for a few minutes to reset the system, then promptly visit a repair shop. Don't delay as minor issues can escalate - repairs are generally affordable, typically costing just a few hundred yuan to fix.

[DelRiver]

Last time, a buddy in the group shared a scary experience about his windshield wipers not turning off. He said the rain had stopped on his way home, but the wipers kept going crazy, and the off button didn’t respond. He suspected it could be a faulty switch module or a control board malfunction. For modern cars with automatic wipers, a software glitch might also trick the system into thinking it’s still raining. Another possibility is welded relay contacts keeping the circuit closed, which is more likely to happen after the car has been baking in hot weather. If there’s a short circuit or an open circuit in the electrical system, things could get worse—like rainwater seeping into the wiring box causing false signals. That night, he didn’t dare drive far and pulled over to a roadside shop, where they diagnosed a relay issue and fixed it with a replacement. He advises fellow drivers to first check the dashboard for any warning lights if this happens. As a temporary fix, quickly disconnecting the battery cable can prevent draining it. Getting it repaired promptly ensures peace of mind and safety. Also, pay extra attention to protecting the wiper system from water during car washes.

[NoraLynn]

With years of experience in automotive systems, I know that windshield wipers failing to turn off is often due to several key issues. Switch assembly malfunctions, such as stuck or worn buttons, can prevent the shutdown signal from being sent. Relay failures with fused or stuck contacts may keep the power on. Wiring problems like short circuits or poor grounding can cause erratic current flow. In smart vehicles, control module errors or software bugs may trigger continuous operation. The wiper motor itself could also be jammed or overheated. A quick self-check involves testing if the switch moves smoothly and inspecting the relevant fuses in the fuse box for any breaks. A simple fix is to try restarting the vehicle. If that doesn't work, take it to a professional repair shop to avoid safety hazards, especially during rain or at night.