I'm too lazy to read all the posts, but everyone realizes that the TPMS has to be reset to your operating pressure. The TPMS monitors loss in pressure. Check out your manual for instructions

 

Read your owner's manual.

 

I did read the owner's manual. That's why I knew how much air to put in and how to reset the sensors. That wasn't my question.

 

I'm totally glad I found this thread. This morning, Murphy informed me that I had a "low tire" somewhere. I have runflats, but I went out and looked at all of my tires and couldn't find anything. The weather was a bit colder this morning, and it's not supposed to go above 50 degrees (F). I have a tire pressure gauge, so I think I might take a look at my tires on my morning break. I hope it's just the cold weather and not a flat.

I'm particularly paranoid because I have to drive four hours to Pittsburgh tomorrow.

 

I checked all four tires with a pressure gauge, and they were all roughly 33 -34 psi. One of them was around 32 psi, though, so I suspect it may have tripped the warning light. I'm so glad it's not a flat!! I'll be putting air into the tires later today and resetting the monitor. Yay, Murphy!!

 

same thing happened to my car the other day. it's been below average for temps around here lately and i happened to be up early in the morning before the sun could warm everything up. the sensor went off and i checked the pressure. didn't see anything out of the ordinary so i reset the sensor. haven't had a problem since.

 

Yes, if you inflate to the correct pressures and reset the TPMS system when it's particularly cold out, you should have fewer false readings. The pressures will be high if the weather warms up for a few days, but there's no warning for above-normal pressures, just below-normal.

(You still need to use a tire gauge occasionally, particulary when seasons change.)

 

U R right. That sudden change to very cold weather in Denver last weekend caused my "low tire" warning to come on, so I just reset it when it was still cold. Pressures dropped each tire from 33 psi to 26 psi.

And with run flats you will know if a tire is flat, esp at slow speeds starting out.

 

Thanks for the link. I have one of those tyre pressure gauges with the crooked shank. Due to the design of my wheels, I end up letting out air everytime I take a read. My father has an old brass one (that has seen better days) much like the one at Moss and it works so much better. I just purchased three, one for me and my MINI, one for my sister and her MINI and a new one for my Dad. "On the first day of Christmas my daughter gave to me......a Moss MINI tyre pressure gauge!" Hey I have begun my Christmas shopping early this year. Thanks

 

This seems unlikely, since the manual for our 2009 Cooper says it doesn't sense pressure, but circumference, and there are no signs of a pressure-sensing system.

 

I'll have to read that section of the manual but that doesn't seem like it could be entirely true. If that were the case, did the car remember from yesterday that it didn't count properly and it's telling me the next morning? The last two times I've had that warning was when I went out in the morning and started the car and I hadn't moved yet. No rotations = No reading which should = No warning? I'll be at a dealership for a meet and greet on Saturday, I'll see if there is anyone in the service department to answer the question...

 

My 2008 Owners Manual described both tire pressure warning systems.

If you have rubber tire valve stems, it is the circumfrence system and if they are metal, it is the electronic transmitters system.

 

It's the law (NHTSA 2005-20586) look it up. If your Cooper was purchased in the USA, you should have TPMS sensors in your wheels. Do you have rubber or metal valve stems?

 

Same thing here this morning. Temp was colder than it had been and upon start up, TPMS warning went off. Checked and the rears were 31, the fronts were 33. Threw a few pounds in all to get them at 34, did the reset and all is fine. Seems the system is on the sensitive side.

 

All MINIs had this until the August 2007 builds. My 05's FTM was very sensitive. Rubber stems = FTM. Metal stems = TPMS

I also tend to carry a few more pounds of pressure in my rear tires to help with handling and check understeer. I go 32-34 front, and 36-38 rear.

 

btw if you the last time you filled them it was the summer and 90 outside, and now its 30 it will come on my did the other day.

 

Hey guys, by the way, don´t you know how to reset the low tire indicator? It happens that my car has no reset button... :( I understand there is a way to do it using a different procedure.