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A8 / S8 (D3 Platform) Discussion Discussion forum for the D3 Audi A8 produced from 2003-2010 and Audi S8 produced from 2006-2010

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Old 10-01-2013, 12:17 PM   #1
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Default Factory Bluetooth Phone Help

So another question with my "new" car to replace the totalled S8. It is a 2009 S8 and yesterday when I test drove the phone sync'd and worked fine. Today it jumps around different displays when it connects to my iPhone 5 for a call. The display changes screens randomly, the microphone mutes itself for no reason and the audio cuts in and out. I tried resetting the MMI, deleting phones from MMI and the Audi connection on my iPhone and starting over. No luck does the same thing. I did wash the car this morning before this but didn't notice anything wet inside the car.

Any ideas on what I can try or look for?

Thanks,

Kris
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Old 10-01-2013, 12:49 PM   #2
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Default As always, think phone issue too

One incremental drop among the many a phone takes can do it. Pair it to another known good bluetooth vehicle before even deciding which "end" the problem is on.
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Current #1: '06 D3 A8L W12 brilliant black w/ amaretto; 4 seat setup, CPO; modestly lowered, H&R 20mm rear and 12mm front DRs with 275/35 on OEM polished + forged 20's; S8 sway bars (see: rear bar and gen'l D3 bar info and front bar); tweaked 385mm front factory brake mod and matching rear brake mod; matching C6 A6 back headrests (better rear view: headrest tweak); owner installed AMI retrofit with part number details here.
Current #2: 2013 Q5 2.0T hybrid; Scuba blue w/ chestnut sport interior; Euro delivery 7/2013 (pictured at Ingolstadt)
Prior (each modded): 2000 C5 A6 4.2 & '96 C4 A6 2.8Q, both still w/ family; '85 C3 5000S 5 sp FWD; '73 C1 100LS

helpful cross reference to a C6 post with MMI and other TSB's that also cover D3 A8's.

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Old 10-02-2013, 07:06 AM   #3
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Default

So the phone worked fine on the way home. There were no fault codes registered for the phone system. Only thing I can think of is that when I washed the car water somehow got near the electronics that relate to the phone module. I guess it could be something else but not sure what that would be.

If a leak caused that, were would I start to look to remedy the problem? Seems odd that a $100k car delivered in 2009 with less than 40,000 miles would be leaking...

Never had an issue with my old car which was a year older.
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Old 10-02-2013, 08:56 AM   #4
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Default Or once again, maybe your phone is broken???

Why the focus on only the car?
__________________
Current #1: '06 D3 A8L W12 brilliant black w/ amaretto; 4 seat setup, CPO; modestly lowered, H&R 20mm rear and 12mm front DRs with 275/35 on OEM polished + forged 20's; S8 sway bars (see: rear bar and gen'l D3 bar info and front bar); tweaked 385mm front factory brake mod and matching rear brake mod; matching C6 A6 back headrests (better rear view: headrest tweak); owner installed AMI retrofit with part number details here.
Current #2: 2013 Q5 2.0T hybrid; Scuba blue w/ chestnut sport interior; Euro delivery 7/2013 (pictured at Ingolstadt)
Prior (each modded): 2000 C5 A6 4.2 & '96 C4 A6 2.8Q, both still w/ family; '85 C3 5000S 5 sp FWD; '73 C1 100LS

helpful cross reference to a C6 post with MMI and other TSB's that also cover D3 A8's.

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Old 10-02-2013, 09:27 AM   #5
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Default

Quote:
Originally Posted by MP4.2+6.0 View Post
Why the focus on only the car?
Good point. I just assumed the car since the phone worked on the way home. I have never had an issue with the phone, I will try a different phone if it acts up again. I will also do another quick wash of the car to see if that makes it act up again.
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Old 10-02-2013, 07:58 PM   #6
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Default

Your Bluetooth module is under the drivers carpet. Not the smartest place for electronics, but it is in a plastic case so you need quite a bit of water to flood it. Once flooded, I believe, wont come back. I am not sure what MMI software version you have. Probably the latest, but just in case check it.
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Old 10-02-2013, 07:58 PM
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