Gs300 Sat Nav Screen Problem

[mzmz]

right my people my screen is being a real pain

when i touch it nothing is happening, 99.99% of the time it wont work

but when u start the car, and the sat nav disclaimer comes up, when u press i agree that works most of the time

but for the rest of the time i cant touch select nothing, so cant adjust heaters etc etc

anyone know how i can fix this, or know when i can get another screen from if the screen is the problem

all feedback shall be highly appreciated as its doing my head in now

[danielbroad]

Does it beep when you touch it even when it doesn't work? Is the problem just in NAV mode or also in Audio / Menu?

[mzmz]

hi it doesnt beep no

it wont work in any mode, cant use the nav cant adjust heaters etc

does anyone know if the screen from a ls400 is the same, as it looks the same

[danielbroad]

hi it doesnt beep no

it wont work in any mode, cant use the nav cant adjust heaters etc

does anyone know if the screen from a ls400 is the same, as it looks the same

Sounds like the emv screen then, the LS400 looks the same but it doesn't have the temperature displays on the EMV they are on a seperate LCD.

[mzmz]

what do u mean by the emv?

could it be the nav. box in the boot faulty?

[danielbroad]

what do u mean by the emv?

could it be the nav. box in the boot faulty?

The emv is the "electro multivision screen", i.e. the touch screen monitor, sounds like yours is broken...

[mzmz]

can my one be fixed or is a new one needed

and if so where can i get one from?

[danielbroad]

can my one be fixed or is a new one needed

and if so where can i get one from?

give these guys a call

http://www.toyotalexusspecialists.co.uk/

[jamesholden]

Start with the simplest things first.

Mine became unresponsive but we pulled out a fuse from the engine bay, can't remember which one it was unfortunately as we just did them in sequence but you'll know which it is when no power is going to the unit. After about 10 minutes we plugged it back in and then put the ignition key back and it sort of rebooted coming up with different messages i'd not seen before on the screen. It's been fine ever since.

Might be worth a try before spending any money.

[danielbroad]

Start with the simplest things first.

Mine became unresponsive but we pulled out a fuse from the engine bay, can't remember which one it was unfortunately as we just did them in sequence but you'll know which it is when no power is going to the unit. After about 10 minutes we plugged it back in and then put the ignition key back and it sort of rebooted coming up with different messages i'd not seen before on the screen. It's been fine ever since.

Might be worth a try before spending any money.

It runs from the radio (2?) fuse in the engine bay - i think its one at the end.

[mzmz]

Start with the simplest things first.

Mine became unresponsive but we pulled out a fuse from the engine bay, can't remember which one it was unfortunately as we just did them in sequence but you'll know which it is when no power is going to the unit. After about 10 minutes we plugged it back in and then put the ignition key back and it sort of rebooted coming up with different messages i'd not seen before on the screen. It's been fine ever since.

Might be worth a try before spending any money.

right will try that tomorrow and let u know how i get on

(fingers crossed)

[jamesholden]

Not sure which fuse it was off-hand but it was a high ampage one, it knocked out a few other things when it was disconnected.

[mzmz]

right i removed the fuse " radio "

which killed off all sound, but the sat nav etc was still on

so does this mean it was the wrong fuse?

[jamesholden]

right i removed the fuse " radio "

which killed off all sound, but the sat nav etc was still on

so does this mean it was the wrong fuse?

Yes it was a high ampage one, i'll try and remember to lift the bonnet and have a look tommorow at which one it was, or you could just pull them all out one at a time until you find the one that turns it off, that's what I did.

[mzmz]

any idea which fuse it is mate?

[danielbroad]

If your not sure - just disconnect the Battery for 15 mins - that'll reset everything.

[mzmz]

done it same thing

what it is im not sure if its the screen

or sat nav box in the boot

[danielbroad]

The screen, the box in the boot recieves the button presses via the network - if that wasn't working the whole system won't boot up.

[mzmz]

right ok

finding a screen is proving to be very difficuilt

[worldentropy]

right ok

finding a screen is proving to be very difficuilt

Chaps,

The touch screens on the Lexus, akin with many cars, is capacitive rather than resistive. In plain English, this means that the screen locates the touch of your finger(s) based on capacitance change under the touched area ...etc.

Like everything, this has advantages and disadvantages, amongst the latter being a tendancy to stray-of calibration, and that's when it gets a little awkward.

It is possible to force the screen to re-calibrate through the diags socket of the main ECU, and this is not difficult to do if you have the CAN/OBD II (depending on model) computer + software. If you don't, refer it to someone who has, and it's a 10 mins job max.

Do that before spending hundreds on a new screen.

Just my 2-pennies worth.

Cheers ..

worldentropy.