I just screwed up my navigation but accidentally hitting load "US-TAB" under LOAD menu.

Now the navigation appear to be inoperative and the is a message in both English and

Japanese, "Insert correct disk". Any one knows how to reset it ? Please help.

Contact your local Lexus dealership and request them to have their local FTS send them the repair disc to reset your navigation ECU.

I would highly suggest that you not adjust anything in this hidden menu.

Hi,
I have different problem but would those repair disks reset the DVD map version?

Thanks,

do you mind tell me what kind of repair disk you have?

Anybody get a fix for this one yet?

I just did the same stupid thing...

I don't have any repair discs. I have my computer set with the american map. Now I'm in my home country and my country dvd doesn't work with my car.

So, I was asking if the repair discs (which i'm hearing about for the first time) would reset the map version. If it does, then I would request the to do that so my computer would have the dvd map of my country and will sort out my problem.

Thanks for your interest.

Where did you buy the vehicle at and where did you ship it to? If you purchased it in the US and shipped it outside of the continental US you may have to replace the navigation ECU to be compatible with your new DVD map disc. For example, the ECU found in some European vehicles is different from the ones installed in vehicles manufactured specifically for the US. If this is the case you need to verify that the new ECU will connect to the display/microphone/RSE/ETC.

You can also try disconnecting the battery and letting it sit for a little while. The last time I my battery went flat the Nav system seemed to reset.

NavGuy:
This is exactly my problem and buying the ECU costs more than $3000 which is too much.





Jainla:
That sounds fantastic but how can I dissconnection the battery? and where do I find it. I should try that.

Thanks,

The car battery under the hood. You'll loose your radio presets and perhaps your seat memory positions; but disconnect the negative terminal and let the car sit for 15 minutes. Worth a shot.

Thanks for the suggestion but I don't think it will work. I thought that you're talking about battery for the ECU. I have disconnected the ECU for more than 2 weeks but that doesn't help. The reason is that the update already written to its memory and I thought thta this what you meant.

Thanks again,

You cannot reset the country after you have selected another country. The only way to reset the ECU is by consulting your local Lexus dealership. They will contact a Lexus FTS who has access to a SDRAM clear disc that will reset your country for US.

Don't know how much they will charge you but it will be much less expensive than another ECU.

Thank you so much for this excellent info. I'll go to them tomorrow and will post the results here.

Many thanks again,

What was the result?

Hi all and sorry for this late reply.

I went to our main dealer and they said that they have no such disks and they can't do anything about it. The customer service was too bad!!

I wanted to complain to Lexus in Japan but unfortunately could find an address for them.

I got frustrated and never came again here. Sorry to all of those who waited my reply.

And thanks to all who took time replying and reading.

Best regards to all,

anyone figure a way to fix the problem?

YOU GUYS HAVE COME TO THE RIGHT PERSON TO ANSWER YOUR QUESTION FOR YOU.
SOLUTION------REMOVE THE ECU UNIT UNDER THE PASSENGER SEAT.
REMOVE ALL THE SCREWS....
OPEN THE UNIT......
DISCONNECTE ALL THE CABLES....
PUT ALL THE CABLES BACK TO WHERE THEY BELONG..
CLOSE THE UNIT
RE-SCREW THE UNIT...
THAT'S IT....
THAT'S HOW IT'S DONE..
DON'T MENTION IT..

Actualy i did almost as you wrote ... except, that i have removed battery inside NAV ECU ....
and i didnt help to get rid of "message of death" .... wrong disc etc .... ((((((((
Any more ideas?

From what I understand from readng this thread, the Nav system is waiting to finish a comand. I think you have to load the correct disk, so if you loaded the U.S., then you need to get a US disk and load it. Then once it's loaded you can go back to the load menu and then reload the correct country.

I have a 2001 GS300 that also has a navigation system. All of a sudden it stopped working and has a message of "disk not detected" on the screen. I have not changed the disk that was working fine before this happened. I have tried to take the disk out and reinsert it but with no change. Any help would be much appreciated. Thanks.

That's an ECU issue. The Nav system isn't booting up the disc. But before you go that far, try this first.

Remove the disc and clean the CD transport real good. Use some compressed air and some electronics parts cleaner and clean the laser lens and transport out good. It may be that a piece of dirt os clouding the lens or blocking it's ability to read the disc. If after you claen it out and you still have this issue. The next step is to see if you can play a normal cd or dvd. If you can, with no issues, then the NAV ECU will have to be replaced.

I dont know ... actualy i do not belive that you can screw your NAV totaly by just pressing wrong buttons
I think there shoud be some maybe special DVD disc to revive from this situation.
Any ideas are welcome. :/

From what I have read here, by going imtothe load menu and hitting the "X" country load tab, it erases the current settings loaded and is waiting for the Nav disc that corresponds with the tab selected.So if you hit US, you now need to finish the load with the disc. Once you do that, you'll reset the nav and can then go back to the load menu and press load and select the correct country and then reload the disc that corresponds with it.
Because the nav only has a small amount of hard drive space, it's deleted all the info that was there to make room for the new info. I would think if you just finish the cycle, you could then start all over.

I agree on that idea .. but! if i could totaly RESET the unit, that it doesnt remember what settings i choose, then
i should be able to load ANY region disc ... i guess
Actualy i thik that i should try to keep unit without battery for longer time ... maybe boards memory survived
longer without battery than just a few mins because of capacitors onboard that could keep memory for longer ...
maybe i should short circut capacitors to unload them faster ... of course all this should be done with disconnected battery ...

But you hit the load US tab. So now it's waiting for that disc. Any other disc goes in, once it read the TOC it rejects it as the wrong disc.

Yes, as i wrote before, now its waiting for that region disk what i have selected, BUT if i could TOTALY RESET UNIT, kinda NO SELECTION has been made and in that case it should accept (i guess) any disk or it should ask what to do .... maybe there is some kind of special disk to erase my settings or to resatore factory default or whatever ...

When the nav unit was first assembled there was an intitial boot up and set up screen. That function can only be performed once. And that's it. After that, all data, menus, and memory are set. What your talking about would be like unistalling the windows operating system on your computer, and then expecting it to be there reset by unplugging it for awhile.
I really think your just stuck on a command screen. Once the system recieves the correct info, you will be able to restart the cycle and this time use the correct region as the option, then reload the disc and your good as gold.

Actualy if we are talking in terms of computers, that im looking for "CLEAR BIOS jumper" ....
that erases all my stupid setiings and sets them to "factory dafault" ... like copmputer BIOS passwd etc ....
In this NAV case i need to erase my region settings and whatever else ... :/
just to have clean system that would boot from any given media.

But the region settings and so fourth have already been erased. It's now asking for the new data to be downloaded. So, if you give it the data it's asking for, then reset the cycle for another new region, youshould be good to go.

Actualy i think IT remembers those settings i have choose in some kind of flash memory ... the point is to have/get system to be
in state just as after manufacturing ... before any data has been loaded.

I've the same problem. Changed country tab and do not remember what was selected so I don't know what kind of disc I need.
Maybe somebody could post all possible country selections found under "country tab".
As I remember there was JPN, US and ... and don't remember :-)
Knowing the country we should try to find corresponding LOADING.KWI file and take a try to start the navi with it.
I'm guessing ...

YES, that would definetly help.
Maybe somebody with not screwed NAVI can post screen foto from country selection screen?
Big thanks in advance.

Has any progress been made on this topic?

The above idea should work (in theory) I've found the LOADING.KWI file for GEN 4 and GEN 5 systems, but nothing else.
Anyone have any friends or connections over in Japan?

I've tried searching for Torrents of the NAV disc and the only other one I've seen is for China.

I'm sure there is a whole torrent network for Japan, but not knowing the language, I couldn't find anything.

I've seen this issue on lots of boards, prius boards, toyotanation, lexus boards etc, and not one solution.

I've got the possible options in LOADING menu:
JP-TSW
US-TSW
AUS-TSW
US-AVN_BT
US-AVN_UBT
US-AVN_BL
CHI-TSW

I've chosen AUS-TWS probably, but not sure if it wasn't US-AVN_BT. What is the difference between US-TSW and US-AVN_UBT for example?
For now I start to look for LOADING.KWI from Australia.

Where ere u able to find the LOADIND.KWI file at???

YES YES YES....HALLELUJAH........It finally worked.
I opened the ECU unit, unplugged the wore that connects to the battery that saves the memory, the whole system was reset and it was very easy......
here is the link....let me know how it works for u guys

http://www.clublexus.com/forums/showthread...ad.php?t=167666

For how long did you disconnect the battery. I've done it for 30 mins, and nothing has changed.
Are there any other than memory backup batteries in ECU?

So I have the same problem with an RX300 unit. No Disk Detected. Any ideas if you can buy parts for these things? Or do I just roll the dice on a used one from ebay? If ebay do I absolutely have to get the same part number? Or will other part numbers work with my vehicle? Mine is a 86841-47020.

So, finally I've made it :-)
First I've thought that the ECU, which some of you referred to, was the computer mounted under the dash, nearby the screen.
Disconnecting the battery which was inside this computer was useless in my case.
BUT, there is another battery - in the navi disc reader. And disconnecting THIS battery solved my problem
In my RX330, navi disc reader is in the trunk.

regards to everybody

Hi guys,

I have a 2003 lexus is200 and my satnav is messed up, i got into the service menu and selected he wrong area now it is asking for correct disc, it's also in japanese, I've tried a few things to fix it, like disconnecting the satnav in the boot/trunk and removing/de-soldering the battery from the satnav unit.
My satnav is the single cct board unit.

Are they any other things i can try?

Is there a disc that would reset the unit that i could get my hands on?

Kevin

(Ireland)

Hello, can you kindly repost the link? I am having the same problem now...

Thanks!

Did you figure out how to reset?

Thanks,

I had a similar problem with my nav unit getting the black screen. Has anyone got their hands on a SDRAM clear disc??? This seems to be my last option...anyone have any success???

I have this but not sure if this the right thing to do...

fix page?

OK, add me to the list of dummies who hit the 'load' button on the service menu. I took it to my local Toyota dealer and they said it was over their head and to go to my Lexus dealer. As a result I decided to try to reset my ECU first before heading down the more expensive dealer path.
I was successful in reseting the ECU (Yes!) but now my Nav screen shows me in Washington DC and I'm in Chicago! Anyone have any idea how to correct this? The disc loaded properly and it's the original factor version.

Thanks!!

I believe you can select regions from on of the menu screen (regular menu , not from the hidden menu screen). I have done it, unfortunately, I have a navi that is not working, I can not give you specific instruction.

How did you reset the ECU? After I am successful with that I can help you on this.

Any information on how to reset a Gen 4 ECU when the navi isn't working (stuck on the "Please insert correct map disc" screen) would be greatly appreciated... either by s/w (gen 4 recovery CD/DVD?) or by resetting the actuall nav unit.

This is in the trunk in an RX400h like I have... I can't even get my fingers onto the unit, let alone reaching the wires/ribbon cables behind the unit... I'm not sure how I would remove the unit... I do have the ability to scrunch my hand in and load the DVD (which is what got me into trouble in the first place as, for some reason, Gen 4 systems don't like 5.1 os/7.1 map data hybrid DVDs... go figure).

HELP!

you have to reset the computer back to default region before the gen 4 hybrid map 5.1 /7.1 will work.