Team-BHP - Reassign TPMS sensors after tyre rotation?

Hi Mods and forum members
I have a question regarding TPMS and tyre rotation.

I recently purchased a Seltos HTX IVT that came in with a factory TPMS. The readings are displayed on the MID. All good till here !

Is any form of re-calibration or re-assignment required after a tyre rotation?As in how will the MID (or whatever is driving the display of readings) know which tyre went where? I searched quite a bit but did not find a cohesive answer.

Requesting Mods to please merge this if I have missed finding a related thread.

Very valid question!

- My 530d has the old-school, limited functionality ABS-linked TPMS. It never gives a low pressure warning below 70 - 80 kmph and never gives the real-time tyre pressure either. On this car, there is no problem with recognising which tyre is the culprit.

- On my Thar however, it's all messed up. We got the tyres upsized and the tyre installer put them back in whatever order. So, I never know what tyre pressure reading is for which tyre.

For now, I use a Michelin tyre gauge. But it would be interesting to know the real solution to this problem.

Quote:

Originally Posted by Mr.RaghavDhir (Post 5586644)

Is any form of re-calibration or re-assignment required after a tyre rotation?As in how will the MID (or whatever is driving the display of readings) know which tyre went where?

I have gone through the owner's manual now and couldn't find anything regarding that, neither in the TPMS section nor in the tyre rotation section.

Then, I had a quick chat with the service advisor from Naara Kia, J P Nagar, and he said the sensor is programmed to handle that automatically. I believe that's correct because I got my tyres rotated at Madhus, and the TPMS is working perfectly. Really cool!

It's amazing to see that even in this ocean of knowledge and experience tat TEAM BHP is, there still are things that we BHPians struggle with.

I always like to think of myself as knowing my car like the back of my hand but Alas ! that's not the case.

Thanks to all the members for sharing their views on this.

There are many types of TPMS available. The manufacturer installed ones normally are self learning.
In my 2017 Tiguan after about 1 km of driving the sensors self calibrate and start indicating correct values. I have changed positions replaced tyres and everytime it showed correct after little driving.

What I understand is that position of the wheel is figured out by the time taken for the signal to go to wheel and come back to the main unit. The aerial of the main unit is mounted asymmetrically. So distance to each wheel is different.
This is just like RADAR technology where time taken is converted into distance.
Once again there are many types of tpms.

I have a similar problem with my MG Hector tyres where the TPMS readings are a little confusing once the tyres were rotated. Whenever I fill the air, example for the front right tyre, the readings shown in MID is the Rear left tyre. Similar for other tyres as well.

So, I believe a calibration is truly required for the TPMS sensors to accurately show the tyre position even after rotation.

Quote:

Originally Posted by Amukherjea (Post 5589181)

What I understand is that position of the wheel is figured out by the time taken for the signal to go to wheel and come back to the main unit. The aerial of the main unit is mounted asymmetrically. So distance to each wheel is different.
This is just like RADAR technology where time taken is converted into distance.

Interesting. I'm really curious about how it works, but most of the explanations I found are high-level.

Quote:

Originally Posted by RaviKBobba (Post 5589319)

I have a similar problem with my MG Hector tyres where the TPMS readings are a little confusing once the tyres were rotated.
So, I believe a calibration is truly required for the TPMS sensors to accurately show the tyre position even after rotation.

Yes, as per the owner's manual, you have to. However, in the case of the Kia Sonet, I don't see any such instructions in the manual and the service advisor confirmed it's self-learning.

Here's the relevant section from MG Hector's owner's manual,

Reassign TPMS sensors after tyre rotation?-screenshot-20230721-12.20.43-pm.png

In BMW X1 F48, TPMS is self learning.

At most you need to go TPMS section in iDrive and select reset tyre pressure. Drive for 1-2 km and its done.

Quote:

Originally Posted by NomadSK (Post 5587141)

The process for restting the TPMS must be there in the owner’s manual. Here’s what it says for Thar !

That is too difficult for such a simple thing.:eek:

This is an interesting thread. I got my third service done for Tata Nexon and asked the service centre to do tyre rotation. They said that won't be possible due to TPMS. I also checked the owner's manual and no information has been provided there about re-assigning tyre sensors.