Map,dest, Menu Buttons Are Not Working !

[fery]

Hi all,

I charged my 12v battery while it was connected to car.
Unfortunately the main switch was ON and high load made charge to be crazy for
couple of seconds. An hour later, everything was ok other than GPS screen says
"A program cannot be read. Please consult with a dealer".

Anybody had such problem? Please let me know if you have any
comments.

Thanks

[maseace]

Strange. I would start by disconnecting the battery negative terminal for a few minutes, then reconnecting.

[fery]

Disconnect the battery doesn't help. I checked the health of ECUs with techstream. Didn't get any faulty unit. The only point I noticed , techstream didn't show center console display! Any idea?

Thanks

[fery]

Calender and maintenance menus in INFO menu shows "A program cannot be read. Please consult with a dealer"as well!

[maseace]

Have you checked all the fuses both inside and under the hood? If you're lucky, all you did was blow a fuse. If not, one of the computers may have been fried.

There are 3 fuse panels under the hood on the driver side, and one under the dash, that I know of.

[fery]

Fuses are all ok,

I did the diagnostic check and NAVI returned NRES, It did the same result in LAN Check as well.

meaning: The device responds in diagnostic mode, but gives no DTC information.

ACTION:

1. Check power supply wire harness of the device.
   
2. Check the AVC-LAN of the device.

As per repair manual.

I'm going to open up the navigation ECU and see what's going on there. My guess is the unit fried.

[fery]

replaced the unit with similar one from friend's car and it start working. so I think I had to buy new one. My P/N is 86841-48030. Found chippest one from Prius with P/N 86841-47040 for 270$. Any body knows if they compatible?