Troubleshooting Hints

WARNING: This page is about a different car, the 2020 Mitsubishi Outlander PHEV. However, it is still accessible from the selected car via links, so may be relevant.

The rear window defogger relay may be defective
The A/C-ECU may be defective
The ETACS-ECU may be defective
The wiring harness or connectors may have loose, corroded, or damaged terminals, or terminals pushed back in the connector