TPMS Warning
 

Have an '04 A8L and am now receiving the flat tire warning icon everytime I drive the car. It frequently disappears after 30 to 40 minutes of driving but will randomly reappear.
Car is now out of warranty (naturally) and so I haven't bothered to take it into the dealer since it doesn't affect driveability. I've now turned off the warning through the MMI. Any ideas on how to resolve this issue?
If this is a frequent topic of discussion, I apologize as I tried searching for a topic but didn't get a hit.
Thanks in advance.

I have the same problem
 

Consensus is dead battery in tpms sensor. Here's the thread that I started when mine started acting up.<ul><li><a href="https://forums.audiworld.com/a8d3/msgs/54229.phtml">Annoying TPMS</a></li></ul>

It's likely a sensor battery that's almost dead.

Yep, battery in one of the sensors is nearly dead.

TPMS
 

audi updated tpms sys to newer type of sensor you may have to replaced all 5 and control
unit under rear seat,hope this helps

DAN B. SUNCOAST AUDI

Re: I have the same problem
 

Seems like it. Thanks for the thread. Now I need to determine if this is something that I can replace, or if I need to have a dealer or a tire shop do the work. Thanks again!

Re: TPMS
 

Dan, any idea what that would cost out of warranty? I know labor rates vary around the country, so a rough order of magnitude number would be fine. What would Suncoast charge?

FYI-if you updgrade MMI software to a higher level you CAN'T turn the TPMS off..it's a pain

Re: I have the same problem
 

My OEM one(s) have failed in my 2004 factory tires. The four transmitters in my "winter" tires/wheels that came from Tire Rack are fine. They were $80 each.

Once the one in my OEM spare goes.. I have a decision to make. Then again, the VDO tire gauge that I grew up with works pretty good. So does the digital "Accu-Tire" that I got free at a trade show. I think they sell for $20 or $30.

TPMS 2
 

ok i work for audi,sensors are 173.00 x 5.
control unit for sys,under rear seat,595.
plus labor,you cant get the old ones anymore,i least i cant,

DAN B.