Navigation disc for my 2008 GX 470

SOURCE: navigation

It was not replaced correctly, more info needed..

SOURCE: LEXUS GX 470 HEIGHT CONTROL

Hello and welcome to FixYa!

As a first course of action, I strongly suggest that you remove the positive battery connector and let it sit for atleast 5mins. or more before reconnecting it. This will reset the system as well as your height control.
Hope this helps and thank you for using FixYa! Have a good one!

SOURCE: 2002 Lexus 470 navigation Unit

Hi, the only real option you could try yourself is one of 2 things,
1, go and buy a small can of compressed air, computer repair or hardware shops can sell you one of these, they are used for blowing dust out of hard to reach places, so get hold of one of these small cans, and put the straw attatchment on to it and give it a good blast of air inside the part you push the cd into, make sure you keep the can upright to prevent any liquid coming out of the can, keeping it upright will ensure you only have air coming out of the can.

2, now if the above dont work then the only other option you have open to you is go to a computer hardware store and purchase a cd lense cleaning kit, this is a cd that goes in the player and it has small brushes on it, you then play this in the player and it will read error like it is now, but then you take this cd out and try a normal cd and see if that makes it start working, if you cant see the cd cleaner on the shops shelf just explain to them its for cleaning the laser in your cars cd player as you cant get to it to clean it by hand, they will then sell you the cd your looking for,

now if both the above fail to solve the problem then chances are the laser itself is no longer working and the chance of getting this repaired cheaper than buying a new stereo is pretty slim, most people dont repair them anyway due to the high cost involved if you have to pay someone to do the work, the best optiong would be to replace the whole unit with a new one or second hand one if you wasnt that bothered about it been new,

let me know how you get on or if you need further assistance ok