TPMS Sensors?

[blraider97]

Do the 2021 RS6 models have actual TPMS sensors attached to the valve stem or does the car have the newer TPMS system that determines tire pressure based on wheel speed and a number of other factors? I ask because I am having new aftermarket wheels installed later this week and am told that I do not need TPMS sensors due to the car having the new system; however, I’ve seen several references to actual TPMS sensors in many of the C8 RS6 threads on the forum. Thanks.

[Jimminez@Nemesis]

The RS6 uses direct measurement TPMS with sensors as they provide temperature reading in addition to pressure. You will need to install sensors if you want to maintain functionality.

[sleepy_rs3]

bottom line is if you can see the individual tire pressures/temperatures, your car has tpms sensors. if it doesnt display individual pressures, it is probably the wheel speed based system. if you need TPMS sensors for aftermarket wheels, go to TPMS.com as you will pay 1/4 of the price of OEM sensors...I have 3 sets of wheels and the 2 sets of pre-programmed sensors I got from them work perfectly on my RS3, get picked up by the car within minutes.

[FBAnder]

Sensors need to be installed on wheels.

[Flieger]

Best source I’ve found for additional sensors is TPMS.com. Both sets of additional wheels I have, have sensors from them. The part number is: 5Q0907275F and you can select the exterior color to best match your wheel. Customer service is good and shipping is quick.

[blraider97]

Ah…didn’t think about the temperature reading. Will pick up some new sensors. Thanks all.

[allenyao09]

Best source I’ve found for additional sensors is TPMS.com. Both sets of additional wheels I have, have sensors from them. The part number is: 5Q0907275F and you can select the exterior color to best match your wheel. Customer service is good and shipping is quick.

Thanks for sharing the info. Very helpful! Just wondering is there any additional tinkering needed for the new TPMS? Or is this simply having it installed any everything is good to go?

[Flieger]

Thanks for sharing the info. Very helpful! Just wondering is there any additional tinkering needed for the new TPMS? Or is this simply having it installed any everything is good to go?

Nothing special, you install the TPMS in the new wheels and set all of your pressures while the tires are cold. Prior taking the car for the very first drive you will ensure that you reset the internal TPMS in the car to accept the new pressures in the wheels you just installed. Once you go over 16mph, the system will read the values and display them on the center display. A word of advice, make sure all of your wheels are set to the proper system pressures before driving, if you do not you will “chase” the proper temp if your wheels are hot. So again, do it all while the tires are cold first thing in the morning. Or as you are installing them for the first time.

[Corgiman30]

Can you get more precise sensors that read in pound or 1/2 pound increments?

[OptimusModulus]

Bringing this back up, before I posted an entirely new thread.

@Flieger Can you explain the difference between 5Q0907275B and 5Q0907275F listed here, they both say for the RS6 https://www.tpms.com/2021-Audi-RS6-TPMS-s/10034.htm

@Corgiman30 Are you implying that these non OEM ones will not measure in 0.5psi the same way that the factory ones do?

Also if I already have an order for some tires I assume https://www.tirerack.com/tpms/detail.jsp?ID=2326 should also work without issue similar to the ones from tpms.com?

Thanks all, it's SNOWING in Chicago today so winter setup scrambling has begun

[FBAnder]

Bringing this back up, before I posted an entirely new thread.

@Flieger Can you explain the difference between 5Q0907275B and 5Q0907275F listed here, they both say for the RS6 https://www.tpms.com/2021-Audi-RS6-TPMS-s/10034.htm

@Corgiman30 Are you implying that these non OEM ones will not measure in 0.5psi the same way that the factory ones do?

Also if I already have an order for some tires I assume https://www.tirerack.com/tpms/detail.jsp?ID=2326 should also work without issue similar to the ones from tpms.com?

Thanks all, it's SNOWING in Chicago today so winter setup scrambling has begun

I have two sets of TPM sensors. 1 OEM set in the summer wheels and the other form TireRack in the winters. Both sets have read in 1.5psi increments on the display with the only variant I have seen is 37.5 to 36.5 (have not seen a tire pressure lower than 36.5 so don't know if it starts going in 1psi increments from 37.5 and below). IE display shows 36.5 37.5 39 40.5 42 43.5 45 etc

[OneFastBMW]

I wonder if it goes in 1.5 psi increments because that is roughly .1 bar.

[OptimusModulus]

Thanks @FBAnder, very helpful. I've seen 35.0 psi on mine so not exactly sure either...

@OneFastBMW seems reasonable.

Also assume the difference to my above question is just B for back and F for front, but the set is listed as 4 Fs and is much cheaper...

Sent from my Pixel 6 Pro using Audizine Forum mobile app

[mercury26]

I have two sets of TPM sensors. 1 OEM set in the summer wheels and the other form TireRack in the winters. Both sets have read in 1.5psi increments on the display with the only variant I have seen is 37.5 to 36.5 (have not seen a tire pressure lower than 36.5 so don't know if it starts going in 1psi increments from 37.5 and below). IE display shows 36.5 37.5 39 40.5 42 43.5 45 etc

I have a set from TireRack also, though have not installed them yet. I just picked them up this week along with a set of Dunlop winter tires. The sensors are made in Germany, when I checked the box. TireRack does supply Huf TPMS sensors, which are an OE manufacturer for Audi.

[Corgiman30]

Bringing this back up, before I posted an entirely new thread.

@Flieger Can you explain the difference between 5Q0907275B and 5Q0907275F listed here, they both say for the RS6 https://www.tpms.com/2021-Audi-RS6-TPMS-s/10034.htm

@Corgiman30 Are you implying that these non OEM ones will not measure in 0.5psi the same way that the factory ones do?

Also if I already have an order for some tires I assume https://www.tirerack.com/tpms/detail.jsp?ID=2326 should also work without issue similar to the ones from tpms.com?

Thanks all, it's SNOWING in Chicago today so winter setup scrambling has begun

@Optimus I was given the impression that the factory TPMS sensors read in 1.5 lb increments but having the car it seems to be 0.5 lb increments. That’s in line with other cars I’ve had with direct TPMS. I’d expect these to be the same. My tire pressure gage is accurate to 0.1 lb (Longacre).

[Flieger]

Bringing this back up, before I posted an entirely new thread.

@Flieger Can you explain the difference between 5Q0907275B and 5Q0907275F listed here, they both say for the RS6 https://www.tpms.com/2021-Audi-RS6-TPMS-s/10034.htm

@Corgiman30 Are you implying that these non OEM ones will not measure in 0.5psi the same way that the factory ones do?

Also if I already have an order for some tires I assume https://www.tirerack.com/tpms/detail.jsp?ID=2326 should also work without issue similar to the ones from tpms.com?

Thanks all, it's SNOWING in Chicago today so winter setup scrambling has begun

As with any part number, it’s likely a new P/N for some reason. Happens quite often but would be worth shooting the guys at TPMS.com an email to ask as they would have the exact info.

I can tell you that mine display in .5psi increments on my digital display…and that goes for both sets of the TPMS I purchased from these guys. Zero errors and all temps/pressures are displayed correctly.

[Flieger]

Thanks @FBAnder, very helpful. I've seen 35.0 psi on mine so not exactly sure either...

@OneFastBMW seems reasonable.

Also assume the difference to my above question is just B for back and F for front, but the set is listed as 4 Fs and is much cheaper...

Sent from my Pixel 6 Pro using Audizine Forum mobile app

It’s likely a variation in the part number when Audi updated their parts catalog. If all of the other info is the same…I’d go with the Bs if they are available.

[FBAnder]

@Optimus I was given the impression that the factory TPMS sensors read in 1.5 lb increments but having the car it seems to be 0.5 lb increments. That’s in line with other cars I’ve had with direct TPMS. I’d expect these to be the same. My tire pressure gage is accurate to 0.1 lb (Longacre).

Now that is interesting. Two folks showing .5psi increments in their display. Mine is definitely 1.5psi for both sets of TPMS sensors. Wonder if it is a software thing or a hardware thing.

[OptimusModulus]

Now that is interesting. Two folks showing .5psi increments in their display. Mine is definitely 1.5psi for both sets of TPMS sensors. Wonder if it is a software thing or a hardware thing.

I think mine is a combination.. I've never seen 38 or 37 for example, but the .5s in between. I have definitely seen 35.0 though

[Corgiman30]

I think mine is a combination.. I've never seen 38 or 37 for example, but the .5s in between. I have definitely seen 35.0 though

Mine currently has 42 front and 39.5 rear so definitely reading 0.5 increments.

[svra42.8]

I have this set on my summer wheels for my RS7. .5 increments from what I can tell.

5Q09072757F HUF sensors.


Sent from my iPhone using Audizine Forum

[Ven2323]

I removed my factory wheels in May, installed new Vossens with brand new TPMS sensors; everything synced up perfectly with the new summer sensors. Last week I put my factory wheels (with my winter tires and factory sensors) back on, but the system is not getting a reading from them. There is no error/warning lights, no system fault, no low pressure warning, the display is just showing "--" dashes for pressure and temperature. I reset the tire pressure immediately after installing, prior to driving, but it's been days and a full tank of gas and they aren't syncing up. Any suggestions, or do I need to get into the codes and clear via VCDS??

[FBAnder]

I removed my factory wheels in May, installed new Vossens with brand new TPMS sensors; everything synced up perfectly with the new summer sensors. Last week I put my factory wheels (with my winter tires and factory sensors) back on, but the system is not getting a reading from them. There is no error/warning lights, no system fault, no low pressure warning, the display is just showing "--" dashes for pressure and temperature. I reset the tire pressure immediately after installing, prior to driving, but it's been days and a full tank of gas and they aren't syncing up. Any suggestions, or do I need to get into the codes and clear via VCDS??

Did the TPMS sensors make it back in when the winter tires were swapped onto the factory wheels? I've seen it take an hour or so of driving for TPMS info to come up on the display after changes/resetting values but not days.

[jmy_oak]

I removed my factory wheels in May, installed new Vossens with brand new TPMS sensors; everything synced up perfectly with the new summer sensors. Last week I put my factory wheels (with my winter tires and factory sensors) back on, but the system is not getting a reading from them. There is no error/warning lights, no system fault, no low pressure warning, the display is just showing "--" dashes for pressure and temperature. I reset the tire pressure immediately after installing, prior to driving, but it's been days and a full tank of gas and they aren't syncing up. Any suggestions, or do I need to get into the codes and clear via VCDS??

Also, do you know if the factory units ever actually worked? Several of us had a bad batch from the factory and had to have them replaced. My factory sensors did the same thing yours are doing now and were replaced no questions asked.


Sent from my iPhone using Audizine Forum

[Roman8er]

Maybe they went to sleep, may need waking up.

[Ven2323]

Yeah, I took delivery in January, winter tires were mounted on the factory rims with factory sensors, everything worked perfectly for four months. Installed new wheels/tires/sensors in May, synced right up, no issues. Just doesn't make much sense that the factory wheels/sensors wouldn't re-sync after sitting in my basement for 6 months.

[Ven2323]

jmy_oak - Did yours ever work? Or did they stop working and needed to be replaced?

[FBAnder]

Yeah, I took delivery in January, winter tires were mounted on the factory rims with factory sensors, everything worked perfectly for four months. Installed new wheels/tires/sensors in May, synced right up, no issues. Just doesn't make much sense that the factory wheels/sensors wouldn't re-sync after sitting in my basement for 6 months.

Interesting. Have you driven for an extended period of time or always short trips. Found this blurb in the manual:

If the TPMS indicator light appears after switching
the ignition on or while driving and the (low tire pressure) indicator
light also blinks for approximately one minute
and then stays on, then there is system malfunction.
The following are examples of situations
that could cause a malfunction:

— If the message appears at the end of the adaptation
phase, the system may not detect one or
several of the wheel sensors necessary for pressure
monitoring. This may result from one or
more wheels without wheel sensors or with incompatible
wheel sensors being installed.

The TPMS indicator light and the message turn off
once the tire pressure monitoring system is available
again. If you cannot correct the malfunction
and the TPMS indicator light stays on, drive immediately
to an authorized Audi dealer or authorized
Audi Service Facility to have the malfunction
repaired.

If the changed tire pressures are not displayed
on the MMI, drive the vehicle for approximately
10 minutes so that the sensor signal from the
wheels is received again.

During this adaptation phase, --.-- is displayed
for the pressure and temperature and the tire
pressure monitoring system is only partially
available. It only provides a warning if one or
more tire pressures is below the minimum permitted
specified pressure.

[jmy_oak]

jmy_oak - Did yours ever work? Or did they stop working and needed to be replaced?

They never worked.


Sent from my iPhone using Audizine Forum

[Ven2323]

FBAnder - There is no indicator light on, never turned on, no warning light, no malfunction warning, no nothing... just "- -" where the pressure and temp would show. It's like its trying to sync, but it's just not receiving data. These sensors worked fine in the spring. And yes, I had an extended 4 hour non-stop drive on Sunday, still nothing registered. My last attempt will be to swap the left and right wheels in the front, since I did rotate those from where they were on in the spring; if that doesn't work, gonna try one of the summer wheels just to see if they sync up, since they were just on and working. Otherwise, I'll dig into the codes via VCDS, to see if I can clear the memory for both sets of sensors. Not going to the dealer for this; had a bad experience right after delivery... they blew out one of my winter tires, then gouged the rim replacing it, and after ordering a new wheel, they lost the adapter for their tire machine. Needless to say, I've changed dealers, but my new one is an hour away. I can live with this if need be; I'll just pretend its 1989.

Roman8er - Should I try pouring RedBull on them?

[Ven2323]

They never worked.


Sent from my iPhone using Audizine Forum

Thanks. Mine worked fine, that's what has me puzzled; apparently they didn't like sitting for 6 months.

[Ven2323]

One last thought on my TPMS sensor issue, if anyone has any insight or knowledge on this. When I reinstalled the factory wheels, I did swap the location of the front and rear wheels from the right side to the left side from where they were in the spring to even out tire wear. Is it possible that I’ve confused the system and it thinks these are a 3rd set of sensors due to swapping sides? I believe that I read the system will store 2 sets of sensors, is the receiving unit not intuitive enough to realize the swap? I guess I will try to switch them back to the original spring position unless someone has any insight.

[Corgiman30]

One last thought on my TPMS sensor issue, if anyone has any insight or knowledge on this. When I reinstalled the factory wheels, I did swap the location of the front and rear wheels from the right side to the left side from where they were in the spring to even out tire wear. Is it possible that I’ve confused the system and it thinks these are a 3rd set of sensors due to swapping sides? I believe that I read the system will store 2 sets of sensors, is the receiving unit not intuitive enough to realize the swap? I guess I will try to switch them back to the original spring position unless someone has any insight.

The systems I’ve had would recognize the wheels even in a new location although it sometime took some driving.

[foomzr]

FBAnder - There is no indicator light on, never turned on, no warning light, no malfunction warning, no nothing... just "- -" where the pressure and temp would show. It's like its trying to sync, but it's just not receiving data. These sensors worked fine in the spring. And yes, I had an extended 4 hour non-stop drive on Sunday, still nothing registered. My last attempt will be to swap the left and right wheels in the front, since I did rotate those from where they were on in the spring; if that doesn't work, gonna try one of the summer wheels just to see if they sync up, since they were just on and working. Otherwise, I'll dig into the codes via VCDS, to see if I can clear the memory for both sets of sensors. Not going to the dealer for this; had a bad experience right after delivery... they blew out one of my winter tires, then gouged the rim replacing it, and after ordering a new wheel, they lost the adapter for their tire machine. Needless to say, I've changed dealers, but my new one is an hour away. I can live with this if need be; I'll just pretend its 1989.

Roman8er - Should I try pouring RedBull on them?

Mine is doing a similar things aswell currently, but my winters worked for a long drive and suddenly one wasnt showing, and now all arent with the sensor malfunction alert. Curious to see what others say about it.

[Roman8er]

Mine is doing a similar things aswell currently, but my winters worked for a long drive and suddenly one wasnt showing, and now all arent with the sensor malfunction alert. Curious to see what others say about it.

I was just relaying the explanation a Toyota tech gave my DIL when she took her new 4Runner in for service. Although I inflated all 4 tires to proper settings and reset the TPMS at the MMI, the idiot light stayed lit. The tech said tire pressure was perfect, but the faulty sensor "went to sleep". It woke up and was fine after he used his computer. I'm pretty sure Red Bull would make it overactive, and addicted to caffeine.

[FBAnder]

Mine is doing a similar things aswell currently, but my winters worked for a long drive and suddenly one wasnt showing, and now all arent with the sensor malfunction alert. Curious to see what others say about it.

Oh boy my winters are going on soon. AIYEEEEEEEe

[foomzr]

I was just relaying the explanation a Toyota tech gave my DIL when she took her new 4Runner in for service. Although I inflated all 4 tires to proper settings and reset the TPMS at the MMI, the idiot light stayed lit. The tech said tire pressure was perfect, but the faulty sensor "went to sleep". It woke up and was fine after he used his computer. I'm pretty sure Red Bull would make it overactive, and addicted to caffeine.

Quick update, I woke them up with the obdeleven plug-in, did a quick test drive and they are reading again. Thanks for the tips!

[OptimusModulus]

Gonna get them mounted this week and see if they work... Got from tpms.com. Will say their customer service was great in figuring out which to orderPXL_20211118_190135731.jpg

[OptimusModulus]

Can confirm the tpms.com ones worked Immediately. Just a store new pressures and I was good to go. Highly recommend

[FBAnder]

Got my winters swapped on today. TPMS read on all 4 corners within 5 minutes of driving. My winters show 1.5psi increments as well. Got them from TireRack:

https://www.tirerack.com/tpms/detail...tandard+Brakes