AudiWorld Forums

AudiWorld Forums (https://www.audiworld.com/forums/)
-   Q5/SQ5 MKI (8R) Discussion (https://www.audiworld.com/forums/q5-sq5-mki-8r-discussion-129/)
-   -   TPMS Really works (https://www.audiworld.com/forums/q5-sq5-mki-8r-discussion-129/tpms-really-works-2859335/)

josedebardi 01-07-2014 08:00 AM


Originally Posted by acadianbob (Post 24526620)
Our TPMS went off recently; due to over-inflation by the way from service work; but it didn't indicate which tire. Are you able to get which tire? If so, I couldn't figure it out. And since, in our case, no tire was low, I had to check each and every tire. 50 PSI in the serviced tire by the way!!

Wow! That's crazy high! It will tell you which tyre if it's sure, but it's not always able to be 100% in which case it gives the generic warning.

spijun 01-07-2014 08:38 AM


Originally Posted by acadianbob (Post 24526620)
Our TPMS went off recently; due to over-inflation by the way from service work; but it didn't indicate which tire. Are you able to get which tire? If so, I couldn't figure it out. And since, in our case, no tire was low, I had to check each and every tire. 50 PSI in the serviced tire by the way!!

"Only" 50 PSI :eek::confused:

Willowdog 01-11-2014 04:22 PM

Hmm, I'm glad others had better luck. I had a flat tire and it never came on. My tire, back passenger, went flat overnight. I drove a block and something didn't feel right and pulled over. TPMS never alerted me.

NABS4 01-12-2014 06:45 AM


Originally Posted by Willowdog (Post 24528441)
Hmm, I'm glad others had better luck. I had a flat tire and it never came on. My tire, back passenger, went flat overnight. I drove a block and something didn't feel right and pulled over. TPMS never alerted me.

TPMS needs to be calibrated by setting the proper pressure in the tires and then setting the system through the MMI. Perhaps the TPMS on your car was never calibrated.

josedebardi 01-12-2014 06:49 AM

I had a tyre blow out the other night due to hitting a pot hole. Instant heavy steering but I drove another few hundred yards to find a safe place to pull up. TPMS didn't say anything, but it was calibrated recently as I topped the pressures up and did it in the MMI in the last few weeks.
And yet in the past it has triggered on the slightest loss of pressure of only 4-5 PSI.
So maybe it's a bit hit and miss...

81Coupe 01-21-2014 10:22 PM

I had a similar experience about a month ago. TPMS said rear left tire pressure was low. Pumped it up at the station and then brought the car in to the dealer the next day. They didn't find any puncture, just that all tires are very low (20-25 psi). So this one seems to be cold weather related--that and my lack of diligence in routinely checking my tires.

However, what makes me less than reassured, is that this "indirect" TPMS does not appear to trigger that easily especially when all tires are losing pressure at similar rates. I would like it to warn me way before those mid-20's psi numbers are reached.

I wonder if it is possible to switch to a "direct" system by purchasing and installing four new in-tire sensors. Does anybody know if my 2013 Q5 is equipped with the necessary hardware to communicate with them?

snagitseven 01-22-2014 04:07 AM

Audis equipped with the passive TPMS system do not have the electronics to read the PSI transmitters so installing them would not work.

When I had the direct sensors in my '09 A4 (the last year for most Audis), they didn't seem to register an alert any faster than the indirect TPMS I have currently. It took about a 7-9 lb PSI drop to get a warning.

ParadigmDawg 01-22-2014 06:13 AM


Originally Posted by acadianbob (Post 24526620)
Our TPMS went off recently; due to over-inflation by the way from service work; but it didn't indicate which tire. Are you able to get which tire? If so, I couldn't figure it out. And since, in our case, no tire was low, I had to check each and every tire. 50 PSI in the serviced tire by the way!!

I got to test mine yesterday, The warning came on and said "low rear passenger tire". Ran to a tire shop and it was down by 7 psi and had a nail in it.

acadianbob 01-22-2014 06:49 AM


Originally Posted by 81Coupe (Post 24532552)
However, what makes me less than reassured, is that this "indirect" TPMS does not appear to trigger that easily especially when all tires are losing pressure at similar rates. I would like it to warn me way before those mid-20's psi numbers are reached.

This is a very good point. I think the TPMS depends on an individual tire rotating at a different rate than the other tires; indicating a different circumference; thereby inferring a pressure problem. But, as you point out, if all of the tires are equally low, it may very well not detect a problem. I'll bet that you are correct about this issue. Agree, not re-assuring.

Bob Petruska 01-22-2014 11:39 AM

Needs 8 psi loss to activate warning.....
 
as stated by Audi.

Just some info for owners wondering why their tire may be 4-5 psi low and no warning.


All times are GMT -8. The time now is 11:41 AM.


© 2024 MH Sub I, LLC dba Internet Brands