Tire pressure monitor system

could be a dead battery after 8 years. a proper scanner will tell you which one

 

There is a TPMS reset function in the settings to perform after all tires have the proper pressure. Could also be a dead battery in one or more monitors. Tire shops can easily, and will usually, check the TPMS senders and can rebuild them with a battery change.

 

Ignoring them is always an option, at least till the next time you do a tire replacement. Or longer…

still, seems early for a 4th Gen.

 

If the TPMS light flashes for 1 minute upon power ON, then goes steady, it means there is malfunction with the sending units. A reset will not fix it. Just happened to me on the original sending units, and I'm going to wait until I have to change tires again.

 

Just changed my 2 tires. Had no issues before the change. Now tpms flashes in begining of drive than after about 15 seconds its on permanently. Tried resetting but didn't help.
I asked the tire shop why it happened and they said not responsible for that. Said it was there before tires changed..
Any idea? Car is driving great.no issues at all with over 200k

 

They messed it up. They might have crunched one of the tire pressure sensors with the tire changing machine. Happened to me last year.

Now, whether you can get them to own up to it ....

 

Any recommendations on the scanner that can do this? The one I have does not pick up any code related to Tpms.

 

I had a feeling they smashed it with the metal rod ax it spins the tire inside but the owner was very aggressive so I just let it be . He said it's already 8 years and battery no good.
I was told that if I lower the tire pressure to 15 psi and do reset ( relearning) than bring up again to 38 and reset again. It might go.

 

tech stream is the only one i know for sure, there may be others

 

So are you planning to change all 4 sensors?

 

A scan tool usually ends up helping less than you hoped, just because of the way the system works.

The ECU in the car has slots to remember the transmitter IDs of four transmitters. The slots are called ID1, ID2, ID3, and ID4.

With a scan tool, you can get trouble codes that will tell you which slot (or slots) the ECU is complaining about. Heck, even with the blink codes you can do that—look, Ma, no scan tool.

But there's no correspondence between the ID1–4 slots and particular corners of the car, so that fails to tell you which tire to work on.

Now, your scan tool can also tell you what transmitter IDs have been saved in each of those four slots. So, suppose the trouble code is for the ID3 slot, and now you use the scan tool to see the ID that's in the ID3 slot, and it's (say) 7EE1234.

Now, if your tires were made of transparent rubber, you could look in at the ID codes printed on the pressure sensors inside, and when you see the one with 7EE1234 printed on it, you know that's the one.

But your tires aren't transparent rubber, so even knowing the transmitter ID doesn't help you know which tire to take off.

Now, you can use the scan tool to show the pressure readings from the different transmitters. (Or at least from the working ones, and any non-working one(s) will just show bogus pressures.) Then you can walk around the car and add or let out a few PSI of pressure at each tire, and see which reading changes on the scan tool for each one, and so you can find out which one each working one is, and the non-working one(s) will be whatever's left.

But the easiest thing to do is go to a tire shop, where they will have a radio wand they can just wave past each tire and tell you "oh yeah, it's that one."

 

Thanks for this informative reply.
I always enjoy reading your deep and knowledgeable comments. Never heard bout transparent rubbers. Bought those china $60 tires from Amazon and it's not a brand name. I'm happy with it still getting my 50-55 mpg. Been now almost 1000 miles on them . I will have to waste time at a tire shop again just to find out where it's coming from . No tech steam here.

 

I've had days I ran out of tech steam myself.

People are saying the scientists are this close to perfecting transparent rubber, only the tire-shop lobby is brutally suppressing it, because if it ever sees the light of day, people will be able to see the IDs of their TPMS sensors and know which one needs replacement.

I'm taking pre-orders for sets of transparent rubber tires. You can pre-order now, but I won't deliver any until I have so many orders that it will be impossible to cover up when everybody gets theirs.

 

You could leave a less-than-glowing Yelp and/or Google review of your experience. Also, the Feds might be interested: isn't it illegal for a US tire shop to send you on your way without functional tpms? Maybe mention that in your review, might catch their eye. Unless they're psychotic...

Our 2010 got new tires, on the OEM rims with tpms; they're still functional. Build date was August 2009.

 

Must be a very hefty price. How much they go for

 

I doubt this. My tire shop, a major national chain, never checks the TPMS

 

No. I'm just leaving it inoperative (light on steady after 1 minute of flashing) for now. I might decide to do it the next time I need to replace four tires. BTW, I have another car, a 2004 Mercedes, that has just displayed TPMS malfunction and the pressure display only shows two of the four tires. The others have a dash in place of the pressure reading.

 

I’m blase about TPMS. Being in Canada it’s “less mandatory”. We’re on snow tires with separate rims for about 5 months per years, with regular valves. The stock rims’ sensors are surprisingly still working, survived a tire replacement about 3 years back. Car’s build date august ‘09. When they die I’ll likely ignore, and just go with reg valves if/when there’s a next tire replacement.