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my BMW 5 Series windshield wipers won't turn off, how to fix this - BMW 5 Series
Home/Cars/BMW/5 Series/G30/G31 (2017-2024)/my BMW 5 Series windshield wipers won't turn off, how to fix this

my BMW 5 Series windshield wipers won't turn off, how to fix this

BMW 5 Series G30/G31 (2017-2024)

Error Codes
1-3 hours
Time
medium
Difficulty
medium
Severity
Navigation
ProblemSymptomsDiagnosisSolution
ProblemSymptomsDiagnosisSolution
3 min read
524 words

Problem Statement

The windshield wipers on a BMW 5 Series are continuously operating and will not turn off, which can lead to potential motor damage and impaired visibility.

Estimated Time
1-3 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

  • •Disconnect battery before working on electrical systems to prevent shock.
  • •Allow the vehicle to cool down before working near the engine compartment.

Symptoms

  • •Windshield wipers run continuously without being activated
  • •Wiper control lever appears unresponsive
  • •Possible accumulation of water on the windshield due to wipers running
  • •Battery drain risk due to wipers operating constantly
  • •Intermittent wiper settings may not function correctly

Diagnostic Steps

  1. 1
  2. 2
  3. 3
  4. 4
  5. 5

Solution

💡 Expert Tip

For complex repairs like this, consider taking photos at each step. This helps if you need to reverse a step or consult with a mechanic. Also, keep all removed parts organized - you may need to reference them during reassembly.

Verification

After completing the repair, verify that the issue has been resolved:

  • ✓Test the affected component to ensure it functions correctly
  • ✓Check for any error codes or warning lights
  • ✓Monitor the vehicle for a few days to ensure the issue does not recur

Prevention Tips

To prevent this issue from occurring again:

  • •Follow the manufacturer's recommended maintenance schedule
  • •Address warning signs early before they develop into major issues
  • •Use quality parts and fluids recommended for your vehicle
  • •Keep detailed records of all repairs and maintenance

Tools & Equipment Required

  • •OBD-II scanner
  • •Socket set
  • •Pliers
  • •Multimeter
  • •Wire strippers
  • •Electrical tape

Parts Required

  • •Wiper relay
  • •Wiper motor (if necessary)

Additional Information

Estimated Time
1-3 hours
Difficulty
medium
Severity
medium
Tools Required
6 items
Parts Required
2 items

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Solution
1. Preparation
  • Gather tools and parts required for the repair.
  • Disconnect the negative battery terminal to prevent electrical shock.
2. Inspect and Replace the Wiper Relay
  • Tools Required: Socket set, pliers
  • Locate the fuse box (typically under the dashboard or in the engine compartment).
  • Remove the cover of the fuse box.
  • Identify the wiper relay (refer to the diagram on the fuse box cover).
  • Pull out the relay using pliers and visually inspect it for damage.
  • Replace with a new relay if faulty.
3. Check and Repair Wiring
  • Tools Required: Multimeter, wire strippers, electrical tape
  • Visually inspect the wiring harness connected to the wiper motor for any frayed or damaged wires.
  • Use a multimeter to test for continuity in the wires.
  • Repair any damaged wires by cutting and splicing with new wire, securing with electrical tape.
4. Test and Replace Wiper Motor (if necessary)
  • Tools Required: Socket set, multimeter
  • Reconnect the battery terminal.
  • Test the wiper motor by activating the wipers from the control lever.
  • If the motor does not respond, disconnect it and test voltage at the motor connector using a multimeter.
  • If voltage is present but the motor does not operate, replace the wiper motor.
  • To replace, remove the wiper arms, unbolt the motor from its housing, and install the new motor by reversing the procedure.