how to fix the windshield wipers not working on my BMW 3 Series G20/G21 (2019-2024)?

Solution

1. Preparation

• Gather tools and parts.
• Disconnect the negative battery terminal to ensure safety while working on electrical components.

2. Inspect and Replace the Fuse

• Locate the fuse box (usually under the dashboard or in the engine compartment).
• Identify the wiper fuse using the diagram on the fuse box cover.
• Remove the fuse using a fuse puller or pliers.
• Check the fuse for continuity, replacing it with the same amperage rating if blown.

3. Test the Wiper Motor

• Reconnect the battery temporarily.
• Remove the wiper motor connector.
• Use a multimeter to check for voltage at the motor connector while activating the wiper switch.
• If there is no voltage, trace back to the wiper switch and wiring for faults.
• If voltage is present and the motor is still non-functional, proceed to replace the wiper motor.

4. Replace the Wiper Motor (if necessary)

• Remove the wiper arms using a puller tool if needed.
• Unbolt the wiper motor from its mounting points.
• Disconnect the wiring harness from the motor.
• Install the new wiper motor by reversing the removal steps and ensuring all connections are secure.

5. Reassemble

• Reattach the wiper arms in the proper position.
• Reconnect the negative battery terminal.
• Perform a function test of the wipers.