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Hi All,

I saw a Tyre Pressure Warning Light for the first time this morning. :?

I hope this post helps anyone who is not sure what to do. :geek:

I checked all the tyre pressures.

I'm not sure if this makes a difference, but as my driveway is on a slope, I drove the car onto a road surface that was more level than my driveway before I carried out the below. :?

One tyre was at 2.25 bar, so I assumed the warning light was due to that.

After ensuring all tyres were 2.3 bar (based on driver side inside door frame manufacturer recommendations), I switched on the car and saw the warning light still on as before. :shock:

After a little research, I read on this forum and online that if the temperature drops then it may cause the pressures to reduce, which makes sense and I'm sure most of you who may be reading this already know. :ugeek:

After a little more research online (as I could not easily find this issue in the Toyota Manual, especially the index) I found a way to reset the Tyre Pressure Warning Light. :geek:

Switch on the car by pressing the start button with brake pressed.
On the steering wheel navigation buttons go to Settings, by looking at the dash display (mine was furthest right menu option and looked like a gear icon).
Then select it and go into the Tyre Pressure Warning Icon.
Then select "SET" and press and hold the middle button until the dash display recognises the request.

This cleared the Tyre Pressure Warning Light for me, I hope it does for you too! ;)

Good Luck! :)
 

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I hope this resolves the issue.
The sensor does what it is supposed to do: warn you when one or more tyres are below the set pressure. The pressure in the tyres can indeed change due to wheather conditions. Some brands of sensors and/or cars have this more than others.
If this was the case, then checking the pressure and resetting the TPMS onboard will do the trick.
If this reoccurs, you might have a puncture or a faulty valve. This will have to be checked in garage or tyre center.
In some cars, the TPMS menu is indeed sometimes well hidden :)

Let us know if this solved the issue or if it reoccurred.
 

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I am going to buy a new set of TPMs for my spare set of winter wheels but am wondering if the TPMS system can be switched off for wheels without the sensors. It would make sense especially as I have seemed to manage OK for 35 years without them - just a tyre pressure gauge and pump.
 

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bluechr said:
After a little more research online (as I could not easily find this issue in the Toyota Manual, especially the index) I found a way to reset the Tyre Pressure Warning Light. :geek:
It's in the index and also pretty clear instructions ;)
 

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Hi Karmalakas.

just thought I'd revive this old thread as it's time for tire change in my country :)

I had problems with this and I dont think I'm the most novice out there so I also had to research :)

Turns out : you have to wait until the type pressure warning stops blinking - that's about a minute. I did not do that. so nothing worked when long-pressing 'setup', - apart from one time which... might have been because I happened to wait longer than a minute. Unfortunately this was right after the first short trip with winter-tires on and it would get angry already on the next trip (so it takes a while for the car to register the new sensors)

Another tip is to tap 3 times while 'setup' is selected instead of long-pressing.

I'm gonna try it in a couple of hours when the tire's have cooled down again. But that's what Google suggests :)

and it's not in the manual.
 

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Pressing 1x long will reset the TPMS and the car will start to read the sensors again.
Pressing 3x the setup button will make the car change to 2nd set (if its recorded)
 

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I have no idea which set of sensors the cars thinks it's using now (have pressed 3 times repeatedly), - so I am going for the long-press/reset scenario. Apparently its not accepting the longpress... so I wonder.. it's not working if I do this at once (after power on).

is it some magic like having to press the brake pedal .. or not.... seatbelt.. or not.. ?. :) engine running... or not ? (maybe it needs to have a charged battery so it doesnt fire up the engine)... yeah.. that kind of magic

tomorrow morning I will try to let it wait for a minute or 2 until it stays solid (after the initial blinking) and see if a longpress will work then.

then I will try 3 short presses...then longpress if it blinks slowly.... and then wait until it doesn't blink really slow, - but 'normal' slow, - and try the longpress again.

It seems the manual is pretty clear about just going in to the menu and longpress.... doesnt work for me.
 

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The light on mine came on this morning had a look around and found a rear tyre with a screw in it had the puncture fixed and pressure put back up to toyotas spec was driving for about a mile home and thought ill reset the tpms at home but the light just went out happy days
 

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Boost - that sounds like a success story for the TPMS system- good to know it works :)

I eventually managed to turn off my TPMS lamp.... not entirely sure how...
started... longpress while it was blinking.. nothing... then it stopped blinking and was permanent on.. longpressed.. still nothing....
pressed 3 times... blinking slowly.. longpressed again... still nothing... then it went in to permanent 'mode' and I longpressed again.

and _then_ the lamp turned off after about 5-10 seconds... did not see the 'Successfull' message I briefly noticed the other day though.... but it went away.... and hasn't turned on again after 3 more trips....

so it's probably gonna be exactly the same for next swap... try and try and and try again... :)
 

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There is no ´succesful´ message. If its succesfull and OK the light goes out.

To monitor the tire pressure i added a display that gets the info live from the TPMS sensors and OBD connector.
If the light goes on i can see which tire is faulty... or (when all are on normal pressure) its just the lower outside temperature that triggers the TPMS system. Comes from Aliexpress from China. Works like a charm.

 

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Yes, its plug-and play. There is a Y-cable included for the OBD connector so your OBD will be reachable as usual.

Search on Aliexpress for ´Toyota izoa TPMS´ and you will find this display. If not, your country is excluded from shipping..
Note only that the grey coloured edge of the display on the pictures is a shiny chrome colour in real.

https://www.aliexpress.com/wholesale?catId=0&initiative_id=SB_20191011070127&SearchText=toyota+izoa+tpms&switch_new_app=y
 

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Yes, its plug-and play. There is a Y-cable included for the OBD connector so your OBD will be reachable as usual.

Search on Aliexpress for ´Toyota izoa TPMS´ and you will find this display. If not, your country is excluded from shipping..
Note only that the grey coloured edge of the display on the pictures is a shiny chrome colour in real.

Was this easy to install? Does it stay permanently in the OBD connector? Just wondering what happens when it goes into a service?

Got a nail in a tyre a few months ago and had it repaired. All seemed fine but now on cold mornings the tyre pressure warning light comes on. Check the pressure and maybe add a little air and all fine for a bit. Happened 3 times now. Wondering if it's the cold, a slow leak in the repair or if the TPMS has been damaged when Halfords repaired the tire. Just bought an air compressor to keep in the car, but not something I want to be doing frequently.
 

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Little trick - lower pressures in tyres to 28psi, reset system, then inflate to 33psi. When weather is cold and pressure drops, it will be looking for pressure <28psi. No warning lamp. You’ll still be OK if you get a warning @ 25psi.
 
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Little trick - lower pressures in tyres to 28psi, reset system, then inflate to 33psi. When weather is cold and pressure drops, it will be looking for pressure <28psi. No warning lamp. You’ll still be OK if you get a warning @ 25psi.
Interesting. I topped up this afternoon. I found the tyre in question was down to 1.9 bar (27.55psi). Topped up to 2.3 bar as it says on the sticker in the side of the car (33.36psi). All my other tyres were 2 bar so put them up to 2.3 as well. The warning light went off straight away after I inflated the first tyre.

If this keeps happening, should I take the tyre back to Halfords or just by a new tyre?
 
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