Amp Failure?
Thread Starter
AudiWorld Member
Joined: Oct 2014
Posts: 228
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Amp Failure?
Recently started to get speakers that fade in and out. Seems to get worse the longer we are in the car with the sound/music playing. Seems like when it is at it's worst, sound is only coming out of the front speakers. No codes last scan. No visible water entry/intrusion. Seems like symptoms similar to what is described with Bose amp failure. I have a MY 10. My understanding is that if I replace the amp, I have to get the component protection removed/programmed.
Wanted to get forum feedback on the issue. Thanks.
Wanted to get forum feedback on the issue. Thanks.
AudiWorld Super User
Joined: Jan 2021
Posts: 4,565
Likes: 1,456
From: USA - NM
If you got Ross-Tech VCDS, then you can run test on the fiber optic system to help you identify if anything is acting up. Other scan tools may offer this diagnostic option as well.
Path in VCDS is open VCDS app, select Applications button, then the Optical Bus Diagnostics button, and give it a minute or two and it will show you a health report on the Optical Bus System (Infotainment system, basically). I added this to my normal monthly 'preventative' scan of my Q7 just to help me identify any problem areas in the infotainment system.
If it is the amp going out, then you can send off the original amp for repair and reuse it plug-n-play, no problemo. If you buy a new/used amp, then it will require the security coding connection to the mothership in Germany, so another couple hundred dollars labor cost via an Audi Stealer, or perhaps you can locate a workshop nearby that has the ODIS system that allows for this connection/coding to occur, which probably cost less than Audi.
Path in VCDS is open VCDS app, select Applications button, then the Optical Bus Diagnostics button, and give it a minute or two and it will show you a health report on the Optical Bus System (Infotainment system, basically). I added this to my normal monthly 'preventative' scan of my Q7 just to help me identify any problem areas in the infotainment system.
If it is the amp going out, then you can send off the original amp for repair and reuse it plug-n-play, no problemo. If you buy a new/used amp, then it will require the security coding connection to the mothership in Germany, so another couple hundred dollars labor cost via an Audi Stealer, or perhaps you can locate a workshop nearby that has the ODIS system that allows for this connection/coding to occur, which probably cost less than Audi.
Last edited by '10Q7TDI_Prestige'; Jan 14, 2025 at 06:18 PM.
Thread Starter
AudiWorld Member
Joined: Oct 2014
Posts: 228
Likes: 66
If you got Ross-Tech VCDS, then you can run test on the fiber optic system to help you identify if anything is acting up. Other scan tools may offer this diagnostic option as well.
Path in VCDS is open VCDS app, select Applications button, then the Optical Bus Diagnostics button, and give it a minute or two and it will show you a health report on the Optical Bus System (Infotainment system, basically). I added this to my normal monthly 'preventative' scan of my Q7 just to help me identify any problem areas in the infotainment system.
If it is the amp going out, then you can send off the original amp for repair and reuse it plug-n-play, no problemo. If you buy a new/used amp, then it will require the security coding connection to the mothership in Germany, so another couple hundred dollars labor cost via an Audi Stealer, or perhaps you can locate a workshop nearby that has the ODIS system that allows for this connection/coding to occur, which probably cost less than Audi.
Path in VCDS is open VCDS app, select Applications button, then the Optical Bus Diagnostics button, and give it a minute or two and it will show you a health report on the Optical Bus System (Infotainment system, basically). I added this to my normal monthly 'preventative' scan of my Q7 just to help me identify any problem areas in the infotainment system.
If it is the amp going out, then you can send off the original amp for repair and reuse it plug-n-play, no problemo. If you buy a new/used amp, then it will require the security coding connection to the mothership in Germany, so another couple hundred dollars labor cost via an Audi Stealer, or perhaps you can locate a workshop nearby that has the ODIS system that allows for this connection/coding to occur, which probably cost less than Audi.
AudiWorld Super User
Joined: Jan 2021
Posts: 4,565
Likes: 1,456
From: USA - NM
There's multiple archival threads on here that discuss getting the Bose amp repaired and who they used/costs, etc.
That is, of course, if the amplifier is the underlying issue.
The sunroof drains in rear are an extremely common issue though. Mine was leaking from left rear sunroof drain, which is a little easier to spot the water on that left side below cargo floor, as there's not much in that area to conceal it. Finding that water definitely motivated me to learn how to fix the issue and get busy on it. My amp is mounted in tire well area on that left side, so that lit a fire under me.
That is, of course, if the amplifier is the underlying issue.
The sunroof drains in rear are an extremely common issue though. Mine was leaking from left rear sunroof drain, which is a little easier to spot the water on that left side below cargo floor, as there's not much in that area to conceal it. Finding that water definitely motivated me to learn how to fix the issue and get busy on it. My amp is mounted in tire well area on that left side, so that lit a fire under me.
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