Why Do My 2011 BMW 328i Windshield Wipers Stop Working After 20 Seconds?

Understanding the Issue with Your 2011 BMW 328i Windshield Wipers

If your windshield wipers on the 2011 BMW 328i are stopping after 15 to 20 seconds of operation, it can be quite frustrating, especially during inclement weather. This issue is often related to electrical components, specifically the wiper motor or the relay that powers it. Below, we will explore some potential causes and solutions to help you troubleshoot this problem effectively.

Common Causes of Wiper Malfunction

1. Wiper Motor Relay Failure: The relay is responsible for supplying power to the wiper motor. If it malfunctions, the motor may stop working intermittently.

2. Wiper Motor Issues: While you mentioned that the motor is engaging initially, it could still be experiencing internal issues that cause it to fail after a short period.

3. Electrical Connections: Loose or corroded connections can lead to intermittent power supply to the wiper motor.

4. Faulty Wiper Switch: The switch that controls the wipers could also be at fault, causing erratic behavior.

5. Overheating: If the motor overheats, a built-in thermal protection feature may shut it down temporarily until it cools off.

Step-by-Step Troubleshooting Guide