GTR rear window heating issue

Regarding your GTR's rear window heating, have you checked the battery recently? A heavily discharged or defective battery can cause issues with electrical components like the rear defroster. Worth a look before digging deeper.

Thanks! I haven't tested the battery specifically. Is there a particular way I should test it to confirm if it's the cause, or is it something obvious like the car struggling to start?

You're welcome. A struggling start isn't always the case, especially with modern vehicles. A proper battery load test would be ideal. Considering the symptoms, it might be best to have a workshop diagnose it to confirm the root cause and avoid potential damage. The repair could be around 290€.

Okay, I understand. Thanks. I'll take it to a workshop for a proper diagnosis. At least now I have an idea of what to expect. Appreciate the help!