Touch screen always comes on when starting car. Is there any way to keep it from coming on automatically until called for with a push button? Or always come on as logo.

 

The screen will display the same selection as you had when the ignition was turned off

The main main modes are
Nav
Climate
Audio

So if you are on the nav screen and you cycle the ignition you will get the nav screen on boot
So if you are on the audio screen and you cycle the ignition you will get the audio screen on boot

And so on

If you are asking how to default it regardless you need to add some electronics to the head unit.

What you need is a pair of the 528T Pulse timers from directed electronics
These are a relay that has a delay timer built in
One is triggered from the ign II signal going off.
This is used to keep acc power to the head unit, set this for approx 1-5 seconds
The second 528T is also triggered from acc II but you use the output to press the head unit button

You can also do this with a micro controller like an pic chip or at-mega but the above is all off the shelf gear.

What you are doing with the above is delaying the acc going off to the head unit then pressing the switch before the power is lost
This is exactly the same as you pressing the button before turning off the ignition, just an automated way of doing the same thing

Cheers
34by151



Cheers
34by151

 

As "34by151" stated; the screen will turn-on automatically but, you may press the "MENU" button and select "SCREEN OFF". The screen will remain off till you press the "MENU" button again or turn off - on the ignition switch.

 

In my 2004 XJR, the answer is no. The only screen you can return to is Audio, Climate, or Phone. Both the "Off" setting and the "Logo" setting will be lost when you turn off the key. If I have the screen on Audio, then go into menu and select the logo screen, the Audio will appear the next time I start the car. If I select Climate, then the logo screen, Climate will come back when I start the car.

 

You will always get the logo when the system boots
If you manually show the logo it will go to menu on boot
Climate shows climate
Audio shows Audio
Nav shows nav

Cheers
34by151

 

Oops, you're right. I hadn't checked since I upgraded the nav software, but yes, if you have the screen off or the logo screen displayed, it returns to MENU. Still no way to have it return to the logo screen though.