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Discussion Starter #1
I recently had new TPMS installed in my winter tires. In the last three weeks I have had to return to my dealer 3 times to have them reset. I am told they are very sensitive. I do not wish to return once a week all winter long. Anyone know anything my dealer does not?
 

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What do you mean by reset? Its my understanding these new sensors start transmitting as they start to move, a good idea to save the battery in them. Once they are paired to the vehicle should have no problems. If your coming out on a cold morning and the light is on on your dash my guess is this - regular compressed air will expand and contract with temperature change, so very cold outside will make your air pressure drop and your light will indicate a low tire. Back in 06 when sensors first came out I was working in a tire shop and people would come in with this issue all the time. Light was on at startup, they drove for X amount of miles and the light went out. As they drove the tires warmed up and the air inside expanded pushing the pressure up to or past the amount to trigger the light. If this seems like your issue my recommendation, and this is good any time of year, is to find a tire place that offers nitrogen inflation. Nitrogen is a dry gas and won't expand or contract with temp changes. Its also good because its dry, and electronics and moisture is always a bad mix. Regular compressed air has moisture in it. Hope this helps.
 

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Discussion Starter #3
My dealer called it re learned. They have a device held near the tire the horn honks and the lights and bells on my dash go out. I then drive for a few days and it all starts dinging again and dash lights up. So far it happens once a week. I am told to just keep coming back. My dealer does not have nitrogen.

Perhaps the temps here are fluctuating quite a bit and will stop when temps even out.
 

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Interesting. I bought a set of aftermarket wheels with new ford sensors, and tires as a package. I just bolted them on the car and drove. Never had any issues. Sorry I'm of no help. That's quite an odd issue you are having. There should be no reason to have to relearn them to the vehicle though.
 

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My question is about the tire pressure.
If the op had the sport package 18" wheels then the car is looking for 39psi.
Snow tires with a 55 or 60 series sidewall would only be about 32/35psi at the most. So the tire inflation pressure may be so low it is just not working out right?
So what size wheels and snow tires are the op using. And what psi are the tires set to?

A different thing might be the battery in one of the TPMS is not good. and works ony when it is warm? and fails in colder weather?
 

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Discussion Starter #7
Tire pressure is what lights up. It happened again yesterday. I stopped and put air into each tire. Light stayed on. I drove about 1 km and all lights went off. I do not wish to do this once a week.
 

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I'd say your losing air pressure somehow. They installed brand new sensors? You have a set of summer and winter wheels? Are your winter wheels used? Do you remember what the pressures were at yesterday when you had to add air? If the dealer installed the tires I would bring it back and have them check for leaks. There should be no reason to relearn the sensors as they say they are doing. On another note, do you have a pressure gauge? You could check your pressure before you drive the car each day, a pain I know, and see if the pressure is dropping over time. If you do this for a week or so it could help you understand what's going on. Maybe one tire is losing air. If you check on a particularly cold morning and they are all the same, say 32, then it could just be environmental conditions. 35 is the recommended pressure per Ford. Hope you can get this figured out, I know it is a pain to deal with.
 

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If a tire is just losing pressure.. before you take it to have the check for leaks, get a small tool which can remove the valve stem insert. Losen the valve stem insert SLIGHTLY and the then retighten them.
It may be just the leaking valve stem insert.
Buying the tool and checking would ony cost a few buck for a tool you can use forever.

A tire place might charge a small arm and a leg and just replace stuff which did not really need replacing.
 

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Good hint

I spit on a couple fingers to put it over the stem to check for slow leakage there, bubble will show quickly if any air is coming out.

Slow leak from valve stem is more common than you'd think.
 

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Tire pressure is what lights up. It happened again yesterday. I stopped and put air into each tire. Light stayed on. I drove about 1 km and all lights went off. I do not wish to do this once a week.
Hi TMLTITAN,

My name is Nikki. I'm the Ford Canada customer service rep here.

I was looking over your concern and I've forwarded it to an expert on the matter, to see what is the cause and what can be done.

I had something similar was informed that tire pressure can drop in colder weather, triggering the low tire pressure warning light to come on, but that it would turn off after the tires warms up under normal driving conditions. This was my experience; not to say that this would apply to every vehicle or TPMS situation.

Let's wait and see what possible causes there are. I'm awaiting a response and will let you know as soon as I have it. [:)]

Nikki
Ford Service CA
 

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Discussion Starter #12
Thank you for helping. I will wait for response. I have made it 2 days now without it lighting up.....woohoo! I had stems checked by a tire shop all was fine.
 
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