Suggestions on disabling tyre pressure sensor

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clicknz

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#324619 5-May-2026 11:17

Hi Team - I have a 2021 Haval H2 vehicle (also known as a Jolion I believe) - it's fitted with tyre pressure monitoring sensors. I've recently had one indicate a fault (instead of displaying the pressure & temperature for each of the 4 tyres one tyre has red warnings flashing next to the wheel icon). About a week later another tyre displayed a fault and then about a week later a third tyre showed a fault.

I've double checked the pressures with a manual gauge and am assuming that the batteries in the tyre modules have died (I've read that they last 5 to 8 years).

I've visited a tyre shop and an auto-electrician to see if they can scan and re-set the TPMS system (in case it's a fault), but they haven't been able to access the car with their computers. I've booked it in with the dealer but they can't look at it for a couple of weeks. Meanwhile the WOF has expired and it seems I can't get a WOF with a warning sensor on the dash.

I've Googled around & it seems there are various methods to disable the system in a few common (USA) vehicles, but nothing that seems to suit a Haval.

TLDR - does anyone know a way to disable the whole TPMS system so I can just go back to the good old method of checking the tyres every now & then...? Thanks for any suggestions.

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#3487799 5-May-2026 17:04

My parents just had the same issue with their 2021 H2, they took it to the dealer and were pleasantly surprised that it had a 5 year warranty with a month left to run. (they thought it only had a 3 year warranty)

The dealer replaced all 4 for free under warranty

Might be worth checking if your still within your warranty

Loismustdye

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#3487864 5-May-2026 19:28

Sensors might be poked from reading on a few Facebook Chinese vehicle pages I’m on, I think they only last 4 years or so. Might have to get the dealer to sort.

Dial111

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#3487887 5-May-2026 20:45

That’s weird that a tyre shop cannot access with a scan tool, maybe they are running older software as it is quite pricey to update scan tool software once the free updates have lapsed.

there is a tyre supplier crowd in Wellington that can program/clone new tpms sensors cheaper then a dealer can, but my first option would be to find a mechanic with a scan tool to get the exact fault as it could be the pin on the valves that are faulty and replacement valves are far cheaper.

Goosey

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#3487912 6-May-2026 06:18

It’s all these non “traditional Japan”, electronics in vehicles that’s a sleeping giant in terms of automotive diagnostics.

the aftermarket (non dealer), service and repair industry can’t keep up. It’s been quietly documented for the past few years…the role of a grease monkey isn’t just about knowing how to pull out and replace stuff, it’s the electronic diagnostics they need to also have a grip on.

Gone are the days of listening, seeing…. Up to date scan tools and knowledge about electronic states is a must.

im sticking to traditional Japan….the parts market is much more reliable, cheaper and people know how to repair them (ford, mazda, Honda, Toyota, Nissan and their siblings and extended families).

clicknz

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#3488008 6-May-2026 10:25

Thanks to those repliers… I agree that the technology has got out of hand with ‘systems’ like this! I can check that the tyres are OK, a mechanic can check that the tyres are OK, but because of an illuminated symbol on the dash it has to fail a WOF. The bad side of Geekery…?

Great to hear about the 5 yr warranty @Predated - I’ve just checked with the dealer and the car has 21 days left on its warranty - thanks. Seems like I should get a good result - in the short term - but if I still have the car for another 5 years I’m guessing that the batteries in the sensors will start dying again…

Thanks all.

Bung

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#3488018 6-May-2026 11:08

If the TPMS light is on you can't get a WOF but it is permitted to disable the TPMS warning if that is possible. By the time the car is 10 years old there's more chance that cheaper aftermarket sensors would be available.

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Handsomedan

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#3488020 6-May-2026 11:17

This begs the question:
How hard is it to change out the sensors like this and what does this mean for the long-term secondhand market?

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Senecio

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#3488023 6-May-2026 11:25

The sensors are usually built into the valve so it’s a tyre off, new valve and sensor, remount and balance tyre job. Something that I would try to put off for as long as possible.

k1w1k1d

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#3488024 6-May-2026 11:27

Some cars have already been scrapped because of the high cost or lack of availability of a replacement ECU or other module. I can only see this becoming more common.

Goosey

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#3488182 6-May-2026 17:20

Senecio:

The sensors are usually built into the valve so it’s a tyre off, new valve and sensor, remount and balance tyre job. Something that I would try to put off for as long as possible.

Senecio:

sensors are usually built into the valve so it’s a tyre off, new valve and sensor, remount and balance tyre job. Something that I would try to put off for as long as possible.

err, maybe not in standard cars… what you speak of may be in super high spec high end cars…not standard ranges.

the bog standard TPMS works by having a sensor in the wheel arch usually just above the mud guards. It’s doing some math to work out the wheel spin and size and shape of tyre to get a pretty accurate read of pressure.

tweake

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#3488187 6-May-2026 17:36

Handsomedan:

This begs the question:
How hard is it to change out the sensors like this and what does this mean for the long-term secondhand market?

a mate of a mate has had this with a merc (i think). could only find one shop that stocked the sensors and there is no option to disable the system. others its optional IF you have the correct scantool and some of those are $$$. for older well known cars, people may have hacked the ecu and can disable it. for some odd brand/model, there may be no option.

maybe its better to change the wof system. an engine light doesn't always mean an optional safety feature is not working.

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tweake

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#3488189 6-May-2026 17:43

Goosey:

err, maybe not in standard cars… what you speak of may be in super high spec high end cars…not standard ranges.

the bog standard TPMS works by having a sensor in the wheel arch usually just above the mud guards. It’s doing some math to work out the wheel spin and size and shape of tyre to get a pretty accurate read of pressure.

i've only ever heard of sensors inside the tire. it tells you on the dash the exact pressure in the tire without having to drive.

a quick google showed using abs sensor so work out the tire is smaller than the others. but that seams really crude eg what happens if you have one worn tire. its only going to tell if a tire is full or flat.

i wonder if what you refer to as a sensor in the mudguard is actually an aerial to receive the rf transmission from the sensor.

Bung

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#3488255 6-May-2026 19:54

tweake:

i wonder if what you refer to as a sensor in the mudguard is actually an aerial to receive the rf transmission from the sensor.

Most likely, passive TPMS using the ABS system doesn't use radio. Volkswagen is a big user of passive TPMS. Most Chinese models use active sensors. If the vehicle is built down to a price you're more likely to get cheap sensor batteries that struggle to last 5 years.

Dial111

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#3488303 6-May-2026 23:01

Goosey:

err, maybe not in standard cars… what you speak of may be in super high spec high end cars…not standard ranges.

the bog standard TPMS works by having a sensor in the wheel arch usually just above the mud guards. It’s doing some math to work out the wheel spin and size and shape of tyre to get a pretty accurate read of pressure.

The vast majority of ‘direct’ tpms sensors are inside the tyre on the rim connected to the valve, Haval is no different and most modern cars from Toyota, Ford to Porsche etc

the most accurate way to read the tyre pressure is from inside the tyre, over complicated math from a wheel arch isn't Really a thing unless you’re an abs sensor. Source: I’m in the tyre industry.

Scott3

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#3488306 7-May-2026 00:33

A great number of cars have Battery powered TPMS (my Model Y does).

Running without a spare tire, I think they are essential to have operational. (I carry a little compressor so can pump a slow leak back up again if I catch it before the tire gets destroyed).

Tesla ones are AUD120 each. Aliexpress ones that look identical run at AUD100 for four. It's possible cut them open and solder in new batteries, but the intent is they get swapped out.

You need the tires off to the rims to be able to swap or work on the sensors.

Just checked the voltage on mine. They are all in the 2.97 -2.98V range (apparently 3V is full and 2.6 - 2.7 V requires replacement) - Was expecting much lower on a 2022 car (perhaps mine were replaced prior to my ownership).

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