Will this plug directly into my 4Runner's existing mirror wiring?

Yes. This mirror uses factory electrical connectors and mounts at OEM anchor points. No rewiring or adapter harnesses needed—swap the old mirror out and the new one in.

Does the heating function work independently, or does it activate automatically?

The heat element is wired into your vehicle's climate and electrical system. Activation depends on your 4Runner's model-year controls—check your owner's manual for heat mirror operation on your specific year.

What's your return window if the mirror doesn't fit or the fold mechanism fails?

Contact ModSupply directly with photos of the issue. We handle returns and exchanges case-by-case—reach out before you remove the old mirror so we can confirm fitment or troubleshoot the electrical connection.