why are my Volkswagen Passat B8 (2015-2022) power mirrors not adjusting

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the vehicle battery to prevent electrical shock.
• Ensure the vehicle is parked on a flat surface.

2. Inspect and Replace the Fuse

• Sub-steps:
  1. Locate the fuse box, usually found under the dashboard or in the engine compartment.
  2. Identify the fuse for the power mirrors using the fuse diagram.
  3. Remove the fuse using a fuse puller or pliers.
  4. Inspect the fuse; if it is blown, replace it with a new fuse of the same amperage.
• Tools Required: Fuse puller or needle-nose pliers.

3. Check the Mirror Adjustment Switch

• Sub-steps:
  1. Remove the switch panel using a trim removal tool.
  2. Disconnect the electrical connector from the back of the switch.
  3. Test the switch for continuity using a multimeter.
  4. If faulty, replace the switch with a new one.
• Tools Required: Trim removal tool, multimeter.

4. Test the Mirror Motor

• Sub-steps:
  1. Remove the mirror from the door panel by unscrewing it and disconnecting the wiring harness.
  2. Connect the mirror motor directly to a 12V battery.
  3. Observe if the mirror moves; if it does not, the motor needs replacement.
• Tools Required: Screwdriver set, jumper wires.

5. Reconnect and Reassemble

• Sub-steps:
  1. Reconnect all electrical connectors securely.
  2. Reattach the mirror assembly to the door panel.
  3. Replace the switch panel and ensure all components are securely fastened.
• Tools Required: Screwdriver set.