Tpms display?

[Doubled613]

Hi guys. I know my 2011 hyundai genesis sedan has TPMS but where can i view the pressure on the screen or does it just come on when the tires are low?

 

[Mark_888]

Hi guys. I know my 2011 hyundai genesis sedan has TPMS but where can i view the pressure on the screen or does it just come on when the tires are low?

Only when tires are low as far as I know. But even if it did, it is not accurate enough to substitute for you taking your own air pressure measurements. The newer digital tire pressures gauges are quite accurate, even the ones that are fairly inexepensive.

 

[Gozar]

Only when tires are low as far as I know. But even if it did, it is not accurate enough to substitute for you taking your own air pressure measurements. The newer digital tire pressures gauges are quite accurate, even the ones that are fairly inexepensive.

^This
I have a 2011 and twice now have picked up a screw in my right rear tire, it only shows which tire is low.
I decided to add road hazard warranty to new tire

 

[dinodiesel]

Does anyone know if the TPMS in our cars actually measures the pressure and transmits the data to the display, or simply uses an algorithm via the ABS to count tire rotations relative to one another and detect changes in tire diameter caused by deflation?

 

[Mark_888]

Does anyone know if the TPMS in our cars actually measures the pressure and transmits the data to the display, or simply uses an algorithm via the ABS to count tire rotations relative to one another and detect changes in tire diameter caused by deflation?

I don't know, but when the warning comes on, and the low tire is inflated to proper levels (and assuming there is no actual leak) then it does take driving for a few minutes for the TPMS warning light to go out.

 

[Southern Boy]

Does anyone know if the TPMS in our cars actually measures the pressure and transmits the data to the display, or simply uses an algorithm via the ABS to count tire rotations relative to one another and detect changes in tire diameter caused by deflation?

I believe it’s just a digital on / off signal transmitted at a preset threshold.
My experience has been that at 28 PSI the TMPS indicator lights on the dash.

 

[GRIFF]

I believe the use of battery powered transmitted signals from a stem mounted device went to the wayside years ago and the pressure monitoring systems are part of the automatic brake system using wheel rpm monitors.

I, however and not sure about Hyundai, but I would like to know from one who does as well.

GRIFF

 

[craigt]

One could over-inflate (temporarily) 3 tires, leaving one tire at normal pressure, and see if that tire is flagged as "low". If it's an algorithm of rotation, it should.

 

[Mark_888]

One could over-inflate (temporarily) 3 tires, leaving one tire at normal pressure, and see if that tire is flagged as "low". If it's an algorithm of rotation, it should.

The tire pressure has to be "substantially" low in my experience before the warning light comes on.

 

[craigt]

My (former) TL had a display of pressure per tire, and it was very accurate (matched my digital pressure reader). One tire had a slow leak which would drop 10 pounds a month. When 3 tires were at 35, and the 1 was at 22, it still didn't warn me of low pressure.

While it was handy to just hit a button to see the pressure, I'll be checking mine manually once a month.

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