TPMS Accuracy question

[Rango]

I check my tires with a conventional, and digital tire gauges on cold tires. My TPMS is close to my manual readings. I never trust any public gauges. If your readings on your TPMS is off two to three PSI with other readings ... I wouldn't worry much ... considering all other worries in life.

 

[nhcowboy28]

So if it's been three days since the rotation and the TPMS readings still show the opposite of what I expect, would you say that the mechanic at the dealer probably just rotated the tires and didn't adjust the pressures? It's reading 38 front and 36 back on the dash.

It’s not like the tpms is position dependent. The sensor reads what tpms in the tire is within a foot of them or so.

I’ve had aftermarket ones... no reset/calibration needed after rotating that I’ve needed.

 

[Todd Piefer]

It’s not like the tpms is position dependent. The sensor reads what tpms in the tire is within a foot of them or so.

I’ve had aftermarket ones... no reset/calibration needed after rotating that I’ve needed.

The TPMS data is transmitted wirelessly from the wheels to the dash. If you put the car on a hoist and took all four wheels off and stacked them next to the car, the TPMS would still report the pressures in the four locations - LF, RF, LR, RR even though there are no wheels mounted in those locations. That's because the TPMS system has "connected" each sensor to a location. So, when the mechanic rotates the tires, that connection points to the wrong locations. Since the pressures are supposed to be 36 for the fronts and 38 for the rears, the mechanic must change the pressures after rotating. If he doesn't, the fronts will be 38 and the rears will be 36. Three days after my rotation, my dash is reading 38 for the fronts and 36 for the rears. That means one of two things -- (1) the mechanic did not change the pressures after rotating or (2) the TPMS is still connecting with the sensors in the previous locations.

 

[nhcowboy28]

The TPMS data is transmitted wirelessly from the wheels to the dash. If you put the car on a hoist and took all four wheels off and stacked them next to the car, the TPMS would still report the pressures in the four locations - LF, RF, LR, RR even though there are no wheels mounted in those locations. That's because the TPMS system has "connected" each sensor to a location. So, when the mechanic rotates the tires, that connection points to the wrong locations. Since the pressures are supposed to be 36 for the fronts and 38 for the rears, the mechanic must change the pressures after rotating. If he doesn't, the fronts will be 38 and the rears will be 36. Three days after my rotation, my dash is reading 38 for the fronts and 36 for the rears. That means one of two things -- (1) the mechanic did not change the pressures after rotating or (2) the TPMS is still connecting with the sensors in the previous locations.

Mkay... if you think so.

 

[Wilzer]

How do you reset and match up TPMS individual sending units in case you do rotate the tires or have to replace one ? Do you have to use an instrument, scanner, plugged into the data port? or something called an "Initiator" for replacement? Had several units go bad on Corvette and was not easy to re-calibrate/initiate. Found Answer: KGIS Full GT Manual Download Unzip and search "TPMS"

 

[MerlintheMad]

Somebody resolve this. I have no idea how TPMS get their data to the dash. And this (as with most techie topics) is frustrating. Heh!

 

[Wilzer]

Somebody resolve this. I have no idea how TPMS get their data to the dash. And this (as with most techie topics) is frustrating. Heh!

RF

 

[MerlintheMad]

RF

Each sensor has its own radio frequency? Is that all? So, the LF, RF, LR, RR radio frequencies are standard with all TPMS manufacturers?

 

[Wilzer]

Each sensor has its own radio frequency? Is that all? So, the LF, RF, LR, RR radio frequencies are standard with all TPMS manufacturers?

Go here KGIS Full GT Manual Download and download manual, extract zipped files and do a search for "TPMS" PS: also found answer for my previous post

 

[MerlintheMad]

Go here KGIS Full GT Manual Download and download manual, extract zipped files and do a search for "TPMS" PS: also found answer for my previous post

Won't open for me. And I don't see a way to download it either.

 

[Grayt 8]

I believe the Stinger TPMS system resets on its own after a tire rotation after some amount of driving time.
The AWD Stinger with 19 inch wheels calls for 38 front and 36 rear, I believe.

 

[MisterMac]

I just had Discount tire adjust my pressure to 33 front and 36 rear. Their machine matches exactly to my TMPS sensors.

 

[nhcowboy28]

The TPMS data is transmitted wirelessly from the wheels to the dash. If you put the car on a hoist and took all four wheels off and stacked them next to the car, the TPMS would still report the pressures in the four locations - LF, RF, LR, RR even though there are no wheels mounted in those locations. That's because the TPMS system has "connected" each sensor to a location. So, when the mechanic rotates the tires, that connection points to the wrong locations. Since the pressures are supposed to be 36 for the fronts and 38 for the rears, the mechanic must change the pressures after rotating. If he doesn't, the fronts will be 38 and the rears will be 36. Three days after my rotation, my dash is reading 38 for the fronts and 36 for the rears. That means one of two things -- (1) the mechanic did not change the pressures after rotating or (2) the TPMS is still connecting with the sensors in the previous locations.

Please take note that if you are awd 3.3, the front should be 38 and the rear 36. So here is what happened. Your tech rotated tires... and adjusted them to the door card specs.

 

[Todd Piefer]

I believe the Stinger TPMS system resets on its own after a tire rotation after some amount of driving time.
The AWD Stinger with 19 inch wheels calls for 38 front and 36 rear, I believe.
View attachment 24896[/QUOT

I believe the Stinger TPMS system resets on its own after a tire rotation after some amount of driving time.
The AWD Stinger with 19 inch wheels calls for 38 front and 36 rear, I believe.
View attachment 24896

"...some amount of driving time." So the locations on the dash somehow synch up with the locations on the car on their own. It's been 4 days and 120 miles and mine still hasn't synched up. It's not a huge deal... I'm just curious about the technology and how it might happen on its own.

 

[nhcowboy28]

Bottom line. Your tire pressure is correct for the front and rear. The tech rotated the tires and adjusted. You are incorrect believing the front should be 36. Which is why you ASSUME incorrectly the tpms sensors must be tied to specific axels.

Please read your door card.

Furthermore, to prove me wrong.

Go out right now and let out 10 psi from one tire. Then drive around.

If you are right, it will be evident.

 

[Todd Piefer]

Bottom line. Your tire pressure is correct for the front and rear. The tech rotated the tires and adjusted. You are incorrect believing the front should be 36. Which is why you ASSUME incorrectly the tpms sensors must be tied to specific axels.

Please read your door card.

Furthermore, to prove me wrong.

Go out right now and let out 10 psi from one tire. Then drive around.

If you are right, it will be evident.

I have 18" wheels front and rear and the pressures are supposed to be 36 psi in the front and 39 psi in the rear as per my door card, a previous post on this thread and this link... https://stingerforum.org/attachments/tires-png.24896/ The dash readings show 39 psi for both fronts and 36 psi for both rears.

 

[nhcowboy28]

I have 18" wheels front and rear and the pressures are supposed to be 36 psi in the front and 39 psi in the rear as per my door card, a previous post on this thread and this link... https://stingerforum.org/attachments/tires-png.24896/ The dash readings show 39 psi for both fronts and 36 psi for both rears.

Cool. Now go let out a crap load of air on one of the fronts.

Drive around.

Take screenshot.

Prove me incorrect.

You’d be the first stinger owner to have axle specific / married tpms.

 

[Todd Piefer]

Bottom line. Your tire pressure is correct for the front and rear. The tech rotated the tires and adjusted. You are incorrect believing the front should be 36. Which is why you ASSUME incorrectly the tpms sensors must be tied to specific axels.

Please read your door card.

Furthermore, to prove me wrong.

Go out right now and let out 10 psi from one tire. Then drive around.

If you are right, it will be evident.

Cool. Now go let out a crap load of air on one of the fronts.

Drive around.

Take screenshot.

Prove me incorrect.

You’d be the first stinger owner to have axle specific / married tpms.[/QUOTE

Cool. Now go let out a crap load of air on one of the fronts.

Drive around.

Take screenshot.

Prove me incorrect.

You’d be the first stinger owner to have axle specific / married tpms.

Keep digging. You're wrong about the tire pressures on the door plate. You're wrong about any assumption of tpms sensors being tied to axles. I never said that. You've never been able to accurately address my actual question so maybe you should just quit posting wrong things and move along with your bad attitude.

 

[Todd Piefer]

The TPMS is accurately showing the pressures in the proper location, confirmed by a gauge. This confirms that the mechanic DID NOT check and adjust the pressure after doing the rotation. (Who knows what else he may have overlooked?!) Something to keep an eye on. Just out of curiosity, I looked at the multi-point inspection worksheet from my prior visit to the dealer and in the tire pressure section was hand written 33 psi for both the front and rear tires. Might be time for me to consider a different Kia dealership...

 

[d34d1]

Could be a Kia thing, my local kia service department is inept. Don’t trust them to even do an oil change.