Jusforfun

This appears to be the cause of the Radio playing at full volume, buzzing hissing or crackling. It has also been reported as not turning off. Other symptoms are Air suspension not functioning properly, flat battery or lane assist malfunction.
What we have is a body fault causing electrical faults. I have ended up recording them in both categories to aid searches but essentially there is one problem caused by kinks developing in the rear right drain pipe. Later production have a different type of hose solving/eliminating the issue.
Sorting the spreadsheet by Elec F I can see a few other fails that could well have been caused by this.
Several of the Audio cut out fails were attributed to failing phone modules. Could they also be related? Other Audio cut out fails reported were after heavy rain, again they could have been related.

Can someone please post the TSB # for the 07 Sunroof drain fix.

If you know the affected or at risk VIN #s please report.

Can anyone confirm which sunroof or both?

If you have a Model Year 07 Audi Q7 and have had related problems, please check the spreadsheet to see if your case is included and let me know if it is not or needs to be updated. If you have no sunroof but had any of the issues please aslo report so I can seperate.

The only TSB I can find is the one for 08 (TSB #2013874/3 Creaking/Rattling Panoramic Sunroof) but this is a seperate issue. Please do not contribute to this thread unless you have information or reports relating to the leak or electrical problem

I think we can resolve a lot of the issues in 07 Q7 into one block with this information.

Here is a recently added reply to an old thread. Interesting to read but I want your replies in this one please.

Tric

Oh My - if I had to endure that amount of work on my Q7 - I would be forcing Audi to replace my vehicle. That seems like a future noise and rattle issue waiting to happen.

matthewsjl

I have 60-08-21 2014440/6 dated Dec 1st 2008. Titled: Water leak from Sunroof Frame.

It lists 2007s VIN range 000000-030301.

The description is: Insufficient sealing of the front or rear sunroof corner pieces.

It details that water from the A, B or C pillars can reach electrical equipment (fuse panels and control modules behind the dash) and specifically calls out that water from the right rear areas of the sunroof can reach the DSP amplifier.

The TSB also details the 'kink' problem with the drains - so one TSB appears to cover both insufficient sealing and the kink problem.

My symptoms were as follows (happened over several days):
1. MMI wouldn't boot up - MMI logo but then blank screen and no sound.
2. MMI would boot but speakers would pop/crackle randomly. Also happened with the car off.
3. MMI fully functional but no sound from the amp.

Basically, there is a condition where the amp failure can disable the whole MMI system.

I have a VAG-COM and scanned the car during some of the above conditions. In the no-MMI scenario, it looks like the defective amp caused the optical bus to drop out rendering the MMI inop. When the optical bus was functional but no sound was produced, the VAG-COM could talk to the amp - which had recoded a high current fault and short faults. I think those are key fault codes to be looked for.

Now, my car just had the amp and rear sunroof drains sealed. My VIN is out side the TSB range (76xxx)...... so everybody should be aware.

John.

pchansen

I was/am very worried about creeks and rattles but so far so good. I've been driving with the radio off specifically to listen to the vehicle. The dealer told me that I was to immediately bring the car back and they'd chase down any rattles I might find. Like I said before, I'm very impressed with this particular dealer. For the tech to escort me back and show me exactly what he was doing and to point out the differences between the old and the new moon roof assembly went a long way to winning my trust. They could have simply said "Sorry, our insurance won't allow customers in the shop".

As a side note, they also updated the MMI to the latest and greatest version. They also warned me that there might be some items in the menu that will change or disappear all together. Well now I'm missing "instrument cluster" and "battery level"- both of course located within the "Car" menu. Also, the item "windows" remains un-highlighted and therefore can't be accessed. I don't remember this item before the update so I'll have them check that out as well.

One more thing regarding the MMI. Our loaner Q5, which was a 2010, had a neat feature where the mirrors would fold automatically when the car was turned off. I'm going to ask and see if they can add this functionality as it was simply a menu item on the Q5.

pchansen

We also had our Bluetooth fail and the radio/sirus/CD would cut out every 2 minutes and 6 seconds. When the sound would cut out, the route overlay, if navigating, would disappear for a second or two and then come back. It was almost as if the system as trying to reinitialize. All was taken care of with a new amp, battery controller and software update. Interestingly, they ordered a new phone module, but was not needed.

matthewsjl

Paul,

Is your 07 within the TSB range? 0-30301?

The fault that you registered with the dealer sounded like just water on the amp - which is the rear right corner.

My car wasn't within the TSB range (on the paperwork that I have). The TSB lists "improved production processes". As mine was leaking from the drain pipe to frame connection - I suspect that's why they didn't go after the whole frame on my vehicle as in your case.

In the TSB, a sunroof frame is mentioned - part number: 4L0 877 049. I've checked in EKTA and this was dropped as of 1/8/2007 and version A of the part should be used instead. Interestingly, just looking up the part on the parts diagram, lists version C of the part.....

John.

matthewsjl

When my MMI was knocked out, the bluetooth phone module was also inop.

I think it's ultimately the amp that gets waterlogged and then does random stuff. The fiber bus from the rear right to the front takes lots of the module communications with it when it fails (and the amp is linked into the fiber bus).

John.

pchansen

Yup.. Mine's 27xxx. As far as which part version they used, I'm assuming it's the latest. It was a special order item and took a week to arrive.

Jusforfun

That mirror feature cannot be added to Q7.

pchansen

Nuts..