1999 Toyota Avalon XLS antenna problem. How to troubleshoot and fix?

MarkSmith · Jul 25, 2020

My after-market AM-FM radio suddenly changed to receive a few FM stations and only one AM station. The radio installer said it's an antenna problem and to "come in". Toyota dealer said the same thing and to "come in". With Covid-19 around, I prefer to stay home and troubleshoot/repair this myself.

Could someone please post a link or diagram showing the complete antenna path with a good description? Would enjoy knowing the path from thevradio to the rear window antenna system.

Only1trueGOD · Jul 25, 2020

The Owners Manual states on page 107;
YOUR RADIO ANTENNA
Your vehicle has an antenna printed on
the inside of the rear window.

NOTICE

Attaching the film (especially conductive
or metallic type) on the rear window will
noticeably reduce the sensitivity of the radio.

I'm not sure what film they are referring to,
I can only assume that it's referring to Tint.

MarkSmith · Jul 25, 2020

Thank you. Nothing has been changed in the vehicle. No tint has been applied. The antennas look normal. The back window has not been damaged. Anyone have a wiring diagram?

Jagalag · Jul 26, 2020

What kind of after market unit is it? Don't take it to the dealer, they will just tell you that your problem is that you're not using a Toyota radio. Maybe your unit just needs to be reset to factory spec. Most aftermarket units have a pin hole button to keep pressed in for 30 or so seconds with the engine off.

MarkSmith · Jul 26, 2020

Thank you so much! Will try it now.

Kenwood KDC-HD548U

1999 Toyota Avalon XLS antenna problem. How to troubleshoot and fix?

Attachments

Our Vendors

Top Contributors this Month

Recommended Communities