Hello. I have an Rx300 (01) with around 123K miles. Navigation box died (I think) a few thousand miles ago. I got the message "External system is not connected". Tried resetting my battery and checking the radio fuse. Everything seemed good. Nothing worked. The navigation box may be dead, if not, any solutions? Also, anyone selling a navigation box for a 01 RX300?

 

Yea most likely your nav box is toast so was mine and got one from a friend on here, if the box is dead you will not get any sound out of the driver side door I have a old one but the nav dose not work...I only had it so I could get sound out of my driver side door really didn't use the nav but recently I needed it and so just got It repaired

 

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I have one nav ecu - brain. If you need pm me.