Start with fuses.
SOURCE: Hi I have a 2007 Q7
Try to reset it as per MMI manual.The reset procedure is as follows:---
press SETUP, BIG KNOB and top right soft button together.Make sure you press them simultaneously. When done right, the MMI screen will go blank, then show the MMI booting logo and return to the menu finally.Check fig below for which button to press:--
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This problem is also faced by many other users too.In there cases the MMI screen goes blank after car is parked in the sun for too long.The MMI starts working in their cases after the climate gets cold.So try this also.also try resetting by shutting car off, opening door closing door, and restarting the car--------------Check out this possibilities.This will help.Thanks.Helpmech.
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SOURCE: MMI starts with the q7 and then shuts off
you have a short somewhere, it sounds like a wire is touching something and is shorting out everything just check your wires and make sure they all are connected properly hope that helps
SOURCE: Audi Q7 2007 Main control on MMI is not function.
Leave it to dry out and see what happens ,it has two chances -it works or it doesnt
http://howtobyme.blogspot.com/2011/12/how-to-reset-radio-code-after-car.html
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Can
car radio code block Passkey anti theft system ?
http://schematicsdiagram.blogspot.com/2011/12/can-car-radio-code-block-passkey-anti.html
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How
to wire new car Radio?
http://schematicsdiagram.blogspot.com/2011/12/how-to-wire-new-radio-on-1990-toyota.html
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Radio
Stereo Wiring Diagram?
http://schematicsdiagram.blogspot.com/2011/12/radio-stereo-wiring-diagram-for-1991.html
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How to remove radio on Car models?
http://repairhelpcenter.blogspot.com/2011/11/how-to-remove-radio-on-acura-car-models.html
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Where
is Radio Fuse located?
http://schematicsdiagram.blogspot.com/2011/12/where-is-radio-fuse-located-on-2007.html
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After
Market Stereo wiring?
http://schematicsdiagram.blogspot.com/2011/12/after-market-stereo-wiring-for-1999.html
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car
radio doesn't allow to switch to the XM Band to get the radio ID?
http://schematicsdiagram.blogspot.com/2012/01/chevy-car-radio-doesnt-allow-to-switch.html
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No power to radio Scion Xb?
http://repairhelpcenter.blogspot.com/2012/01/no-power-to-radio-on-2005-toyota-scion.html
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Radio has power but
no sound?
http://repairhelpcenter.blogspot.com/2012/01/lexus-rx330-radio-has-power-but-no.html
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Radio goes ON and
OFF while driving?
http://technoanswers.blogspot.com/2012/01/radio-goes-on-and-off-while-driving.html
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Town Car Radio stereo wiring?
http://technoanswers.blogspot.in/2012/02/lincoln-town-car-radio-stereo-wiring.html
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Radio wiring
diagram for Car?
http://technoanswers.blogspot.in/2012/02/radio-wiring-diagram-for-1997-lincoln.html
--------------
How to remove cd
player from dash?
http://technoanswers.blogspot.in/2012/01/how-to-remove-cd-player-from-dash-on.html
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This will help.
Thanks.
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