This system controls all of the entertainment and information modules and communicates with light pulses via a fiber optic line.
2007 audi q7 fiber optic loop.
The system is a loop meaning if one goes down all control units will not function.
Rebooting of the mmi is caused by the fiber channel loop being open somewhere.
Audi mmi is the platform audi has staked for its radio and navigation system.
The avin most ad fiber optic amp interface allows the audi factory amplifier the output from all speakers including subwoofer and premium sound quality to be retained when installing any.
The most bus is a fiber optic loop that goes from device to device.
My 2008 q7 still has the original 4140 which i ve never updated.
Basically every module needs fiber optic signal and 12v power attached to function to wake up most network it is enough to open close the door you don t have to start the car the thing is most gateway will go to sleep after 10 minutes if network is broken and to wake it up you need to open close any door or turn on the radio.
Karono most fiber optic optical loop bypass female adapter connector plug diagnostic device repair tool kit for bmw mercedes porsche audi vw 1 1394986 2 4 3 out of 5 stars 45 9 49.
The scan shows which modules are communicating.
Yiovvom fiber most optic loop connector diagnostic device tool bypass female and male adapter for benz audi mercedes bmw vw porsche mercedes benz audi vw porsche pack of 2 4 3 out of 5 stars 123 13 99.
Audi q7 mmi diagnosis and repair.
A8 a8l 2003 2009.
This article applies to the audi a3 a4 b7 b8 a6 c5 c6 and q5 q7 2001 present.
Works intermittently but mainly does not.
Q7 2010 2013.
Audi q7 mmi diagnosis and repair.
It encompasses just about every electronic feature you could want in a car such as phone calling bluetooth connectivity and satellite radio.
Q7 2005 2009.
Since the optical bus is connected in series first device out to then second device input and so on until it gets back to the first device input to complete a loop.
2007 audi q7 mmi stopped working.