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[raywilb]

a mokka on a 16plate is telling me a tyre needs air, but it doesn,t . is there a sensor on the wheel that may be faulty, the tyres are recent all round
& in good nick.

[STEMO]

Yep, there's definitely a sensor 

[ronnyd]

Yep, there's definitely a sensor 

Nah, there's a little man, sorry, non gender person, running around with a tyre pressure gauge.

[YZ250]

I assume that you’ve done the reset procedure.

…………
the tyres are recent all round
……

If you’ve carried out the reset procedure, maybe one of the TPMS sensors got damaged during the tyre change. Is it always the same wheel that shows under inflation. 

[TheBoy]

Not sure on the Mokka.

Some systems have a sensor inside the tyre. Other systems use the ABS to detect the speed of rotation - if its ones of these, ensure the tyres are identical sizes.

[STEMO]

It's the same as the astra, I think, sensor connected to the tyre valve.

[raywilb]

I assume that you’ve done the reset procedure.

…………
the tyres are recent all round
……

If you’ve carried out the reset procedure, maybe one of the TPMS sensors got damaged during the tyre change. Is it always the same wheel that shows under inflation.  .

same tyre. reset procedure carried out does a new sensor need programming in once fitted ?

[STEMO]

https://youtu.be/Qc1IcLVyLKE

[Rangie]

So pleased I've none of these " helpful aids" on my cars, simply check them once a week with my antique Dunlop pressure gauge.

[Andy B]

a mokka on a 16plate is telling me a tyre needs air, but it doesn,t . is there a sensor on the wheel that may be faulty, the tyres are recent all round
& in good nick.

is it telling you that a specific tyre is 'flat'? Or is it telling you that you that one of your tyres is 'flat'?

[raywilb]

a mokka on a 16plate is telling me a tyre needs air, but it doesn,t . is there a sensor on the wheel that may be faulty, the tyres are recent all round
& in good nick.

is it telling you that a specific tyre is 'flat'? Or is it telling you that you that one of your tyres is 'flat'?

  the same corner needs air, tho as I said it doesnt , anyway its a job that requires the bead popping so its booked in to a tyre shop

[Andy B]

a mokka on a 16plate is telling me a tyre needs air, but it doesn,t . is there a sensor on the wheel that may be faulty, the tyres are recent all round
& in good nick.

is it telling you that a specific tyre is 'flat'? Or is it telling you that you that one of your tyres is 'flat'?

  the same corner needs air, tho as I said it doesnt , anyway its a job that requires the bead popping so its booked in to a tyre shop

but is the car telling you that you have a particular tyre that's flat ie direct system that has a pressure/temp sensor in each tyre & tells yo the pressure of individual tyres?
OR is it telling you that you need to go looking & one 1 of the 4 tyres is flat ie indirect that uses the ABS?

[Field Marshal Dr. Opti]

TPM is a pain in the arse.

The system in my old Jag would always show an error message when the weather was  very hot or very cold.

[ronnyd]

A lot of these 'driver aids' are just  to pander to drivers who are to idle to check their car once a week. I also know when it's raining ,because i see these funny wet spots all over the windscreen. 

[TheBoy]

TPM is a pain in the arse.

The system in my old Jag would always show an error message when the weather was  very hot or very cold.

Before I changed the battery, mine used to come on every time it went sideways.  With new battery, I only see it if the car has been left standing for a couple of weeks.