TTS MK2 TPMS Sensor Errors

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Apr 28, 2020 | 09:29 AM

kentukred

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TTS MK2 TPMS Sensor Errors

I have a 2012 TTS Mk2 with factory wheels and TPMS sensors. I've recently started having some intermittent TPMS errors that show up on the dash display. The error is not always present. I'm assuming I have a sensor that's dying. Does anyone have experience with replacing these on a Mk2 TT? I've found an aftermarket supplier who sells an entire set at the correct frequency for the price of a single OEM sensor. Will replacing the set require a Vag-Com? Is there any way to program the car to read the new sensors without a Vag-com?

Thanks for any input/help

Apr 28, 2020 | 05:41 PM

Vegas-roadster

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Joined: Apr 2001

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From: Las Vegas

In the US, all stock Mk 2 TT, TTS, TTRS use ABS hub rotation sensors to generate TPMS alerts. It specifically states this in each model's owner's manual. They do not monitor tire pressure directly, so there is not a part on the rim sending signals somewhere. Note that after the TPMS has been reset via the dash display after inflating the tires to proper pressure, you will get a TPMS warning if the pressure later is too low (ABS measures an increase in rotation rate) OR too high (ABS measures a decrease in rotation rate). Why the Audi engineers could not have added one line of computer code to ignore over-inflation warnings which are merely a nuisance amazes me.

If you have not checked your tire pressure recently, pressure increases as outside temperature increases. Your intermittent warning may be due to the tire pressure being borderline too high. For example it might be OK in the cool morning but go off in the hot afternoon or extended highway driving.

Several sources offer aftermarket direct measurement systems.

Last edited by Vegas-roadster; Apr 29, 2020 at 10:44 AM.

May 1, 2020 | 10:04 AM

ebusch

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Joined: Dec 2000

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From: Orlando, FL

Quote:

Originally Posted by kentukred

I think the batteries in the factory TPMS sensors are supposed to last around 7-8 years or 125k miles, based on driving habits. In my case with my 2008 3.2, they lasted just past 9 years before I started getting errors. Unfortunately there's no real way to know which sensor is dying, and they are completely sealed with no way to just replace the batteries. Plus if one goes the others are probably not far behind, so you might as well replace all 4 at the same time. I ended up ordering a set of OEM replacements from Amazon for around $100 total and had them installed at a local tire shop for about the same (I think it was like something like $20-$25 per wheel). I'm pretty sure they end up auto-adapting to the car after a few miles of driving, so there's no need for vag-com. The part number for the sensors is 1K0907253D

Last edited by ebusch; May 1, 2020 at 10:07 AM.