Why does the rear wiper of Audi Q2L keep wiping?

[DiDawson]

The wiper keeps wiping and cannot stop, which should be a fault in the wiper motor's circuit. How the wiper works: When the driver operates the wiper handle, the demand signal is transmitted to the BCM (Body Control Module). The BCM then sends a start signal to the wiper motor, which controls the wiper arm to perform the corresponding action. This is the working principle of the wiper. Solution for the wiper continuously wiping: You can check it yourself. After disconnecting the negative terminal of the battery, the wiper will stop moving. Without operating the wiper handle, drive the car to a repair shop or 4S store and let the technician check the circuit issue.

[GageLynn]

I've been driving this car for almost ten years and I'm quite familiar with the minor issues with the rear wiper. If it keeps moving non-stop, it's most likely due to a stuck or worn-out control switch, as older cars are prone to such problems. My neighbor's Audi Q3 also experienced this, caused by aging circuits leading to contact adhesion, which continuously sends signals to keep the wiper working. Additionally, the wiper relay might have failed or short-circuited due to water ingress, especially during the rainy season, making the system think it needs to keep wiping. Wiring issues shouldn't be overlooked either, as squeezed or damaged wire harnesses can cause uncontrolled current flow. I recommend not attempting DIY repairs—Audi's electronic systems are sophisticated, so it's best to have it checked at an authorized service center. Before replacing any parts, try manually turning off the wiper switch to see if it responds, but don't take unnecessary risks.

[HoldenRose]

As someone who frequently tinkers with cars, I've found that continuous rear wiper movement is often caused by switch contact erosion or fuse issues. First, check if the interior switch is stuck in the ON position by gently tapping it to test for looseness. The fuse is located in the box under the dashboard—inspect it for any signs of melting, particularly the one corresponding to the F25 position. If that's not the issue, the relay might be near the wiper module; removal is straightforward but requires tools to test the current. Circuit shorts are another major cause, such as wires being pinched or worn by items in the trunk, leading to a continuous signal. I've fixed similar issues myself by replacing a small component, but Audi models are complex, so I recommend starting with basic checks rather than forcing a solution.

[DelHannah]

My Audi Q2L, just a year old, started having uncontrollable wiper issues, which really scared me into doing some research. This unexpected behavior is often seen in Audi models, possibly due to smart system failures or software bugs—like incorrect settings triggering continuous mode. The button itself might also be stuck or have water ingress causing adhesion. The solution is simple: restarting the vehicle or updating the infotainment software usually helps in most cases. Additionally, check the rear window area for any debris blocking the sensor, as dust buildup can trigger false rain signals. For safety, avoid handling it while driving; it's best to park and have a professional technician diagnose the issue. Ignoring it for too long might burn out the motor, increasing repair costs.