- Blown Fuse: Check the fuse box for a blown fuse related to the rear window demister. If you find a blown fuse, replace it with one of the same amperage rating.
- Faulty Switch: The switch itself could be faulty, preventing the demister from functioning correctly. You can try cleaning the switch contacts or replacing the switch to see if it resolves the issue.
- Wiring Issue: There may be a break or short in the wiring that connects the switch to the demister. Check the wiring for any damage or loose connections and repair or replace as necessary.
- Demister Element Failure: The demister element on the rear window may have failed, preventing it from clearing properly. You may need to replace the entire rear window or the demister element if this is the case.
If you are not comfortable troubleshooting and repairing electrical issues, it's best to take your Rover 45 to a professional mechanic for further diagnosis and repair.
