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Wheels TPMS Sensors Discussion

Maverick

Well-Known Member
#81
The original TMPS sensors do not need any syncing/reprogramming, either with winter/summer or 18"/19" rims. if you're talking about aftermarket ones, no clue.. :rolleyes:
 

TempleGuy

Active Member
#84
I've got after market sensors in my wheels, from rimstyle.
They required programming for the car, but that was done by rimstyle and included in the cost of the sensors.
The car picked them up after a short while, some people have had it take longer though. There's another thread about it if you have a search.
 

SAP14

New Member
#85
Check when ordering, I ordered aftermarket wheels and TMPS, but choose option of programming.
Received TMPS are Continental brand and working fine. After couple of km they were synchronised.
 
#87
Quick questions for you folks...don't know if someone reported this (I apologise if so), but this morning I adjusted the tyre pressure (2,5 bar front and 2,3 bar back) according to the manometer. After a minute or so, as I got in the car and the gauge started reading the tyre pressure, it read 2,8 and 2,6. Did anyone encountered this discrepancy between the TMPS and a manometer? Which reading should I trust?
 

padigree

Moderator
Staff member
#88
Quick questions for you folks...don't know if someone reported this (I apologise if so), but this morning I adjusted the tyre pressure (2,5 bar front and 2,3 bar back) according to the manometer. After a minute or so, as I got in the car and the gauge started reading the tyre pressure, it read 2,8 and 2,6. Did anyone encountered this discrepancy between the TMPS and a manometer? Which reading should I trust?
After a minute of driving? What are the temperatures? I use these things hanging on the gas station. Seems to be nearly the same (+/- 0,1bar)
 

speedking

Well-Known Member
#90
I use these things hanging on the gas station. Seems to be nearly the same (+/- 0,1bar)
I'm guessing that German petrol station air machines are subject to all sorts of legislation and strict calibration requirements:) It is reassuring that there is good correlation between them and the TPMS sensors.

My TPMS agrees pretty well with the air gauge that I have used for years.

At the end of the day it's all down to calibration. Which do you trust most?
 
#91
Only, if you want the new TPMS serial numbers registered the in the ECU. The new ones will automatically sync and send the correct psi to the system. If you transfer the old TPMS to the new rims, no need.

The actually procedure is too; Replace the TPMS, using a handheld reader which activates and registers the TPMS and new serial number. Then, upload the new serial numbers to the ECU from the handheld, via the Hyundai SAE unit. Then register them in the ECU with the Hyundai SAE unit, to replace the old serial numbers.

The long and short of it.
 
#92
It has come to our attention via our service department that two N customers have experienced a sizeable drop in tyre pressure, for no apparent reason.

No obvious damage seems to have occurred and valves seem ok.
Both were front O/S and had covered a long journey (75 & 100miles) when they dropped to 26psi.

We think it’s very odd but a coincidence.
Any other or similar issues with tyres or pressures known of ?
 
#93
No not in any of the HMC/ Genesis products we’ve owned. Was it checked by the TPMS or manually?

First and simplest check is; to see if the valve cores are tight. Normally, if loose and not bottomed they will leak slowly as the pressure increases in the tyre from extended use. If ambient weather was cold, you can also expect more drastic changes in tire pressures. As much as 6 psi or more overnight.

If it was displayed on the TPMS, recalibrate with the Hyundai SAE Unit, take it for a spin and leave it set over night. Of course standardizing pressures after calibration and recheck the next morning.

Batteries in the TPMS Units can also begin to fail and send false readings.

Sidewalk flex is another issues, which can contribute to reductions in tire pressures. If either i30N were drove in a spirited manner over the course of the trip, small amounts of pressure can escape thru the bead itself. Normally, this happens due to tires being under inflated to begin with.

It won’t effect the bead integrity or cause a catastrophic deflation either. Just check for any deformations in the tyre carcass to be sure. These amount to, sidewalk separations, bubbles, or damage to the tyre beads or rim mounting surface.
 
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