sulaiman

I have recently purchased used 2007 ls460 ,yesterday I have noticed weak battery as if the car wouldnt start then finally the car started but the screen(nav) not working and there is amessage the program cannot be read take it to adealer. I took it to anearby workshop ,then after inspection he found error code u0243 .I asked the electrecian what is this told me: (communication is interrupted between the computer and the screen ) can you help me guys? anybody had similar problem?
HE ASK ME 300 USD TO FIX IT ? IS IT REASONABLE OR NOT?
THANKS

rominl

iTrader: (4)

so did you check the battery and see if it's weak? if so, change it first.

after that, maybe try to start and see how it goes. when you change the battery it kind of reset the car anyway

JFNash

Happened to me before. Dead battery.

sulaiman

i have replaced the battery ,now starting ok but the screen did not work

JFNash

You had replaced the factory's hard drive (navigation hdd), hadn't you?

If you had, then you'll have plug the factory's hard drive. Only then will the car's nav screen work.

Again, happened to me before.

sulaiman

YES .I HAVE REPACEDTHE FACTORY HDD IN ORDER TO WORK IN MY COUNTRY(KSA).IF I PLUG THE THE FACTORY HD ,THEN THE NAV SCREEN WILL NOT WORK IN MY COUNTRY.WHAT ABOUT THE CODE U0243 (communication error)

JFNash

Replug the original hdd, start the car then disconnect the original hdd and plug the modified one (the one has KSA's map) again. It will work normally again.

This will happen every time you replace the battery while the car is switched off.

As for the error code, I only can guess that it has something to do with your car unable to read this foreign hdd. Do the above procedure then do the test again. I believe it will be gone.

305Busa

I have the same issue going on now. The screen reads "unable to read date""consult your dealer". It doesnt do it all the time but most of the time. Everything else works except the nav and the HDD and the voice commands. I took it to the dealer and after about 5 hours of diagnosis, they said they would order me a new nav but they had to make sure because its very expensive (something like 13,000). I got the call today that its in, I'll be going in next wednesday to have it installed.

BTW, they did everything listed above and more.

2007 LS460L

sulaiman

thank you for your advice ,i will do so ,but can you recommend any one to this procedure because the modification was done by previous owner,by the way i am in dammam

JFNash

The gentleman's case is a little bit different. He replaced the car's original hdd with a custom made one. The one his car is having now was modified to show the regional maps that were copied from a gulf-specs-dvd-based LS460's maps dvd.

The currently installed hdd doesn't have the full "software" the nav system needs to work properly. Therefore, he needs to reinstall the original hdd, start the car so it can reload the "software" from the original hdd, then unplug the original hdd and install the modified one if he wants to use the maps. If he does the last step, then next time his battery dies out he will have to do the above procedure again.

JFNash

Check your PM inbox.

sulaiman

check your pm inbox

sulaiman

Today my car is fixed the exact way as JFNASH described,
now I AM HAPPY ,THAANKS TO JFNASH

JSTALEX

JFNASH just saved you the $300 bucks the other guy was gonna charge you to do the same ****! You should PAYPAL him some $$$ for the money he saved you and the advice. Good to know that the Club Lexus Brothers on here are looking out for each other!