Twice within the past few weeks the tire warning symbol has appeared inside the tachometer face. I have checked and re-checked the tire pressure but only had to add a couple of pounds of air in the rear tires. On both occasions we had been in colder weather than where we live near the coast(sea level) and the ambient temps. are lower. All I can figure is that our 09 GT is just a little touchy when it comes to tire pressures. Anyone else experience this?
Tire Warning Light
- Thread starter fxpthl
- Start date
We have this happen on our 4Runner frequently, but it's always due to the full size spare being low. I don't think the CX9 has a full size spare though, so that wouldn't solve your problem. That light used to bother me, but I've gotten used to it to the point I don't really pay much attention to it in the winter. I'll do a quick check periodically to make sure they don't look obviously low, and if I've got a flat, I figure it'll be pretty obvious 
That said, I'm sure those systems can be prone to failure, so might not be a bad idea to have the dealer check it out on your next oil change or scheduled service.
That said, I'm sure those systems can be prone to failure, so might not be a bad idea to have the dealer check it out on your next oil change or scheduled service.Just let about 10lbs out and it should turn on.
Ours was going on once a week. I had to add about 8 lbs each time. I found what I thought was a nail in the tire so I took it to a shop to have it repaired. They said it was just a small piece of metal (no puncture) and they couldn't find a leak. I insisted that they check again so they did. They removed the tire and checked the inside, remounted and did a check in the dunk tank. Nothing. I guess remounting the tire did something because the leak went away.(headshake
- :
- 2022 CX-5 Turbo
If you set the PSI to around 34 (as recommended by Mazda in USA), the TPMS sensor should trigger the light at around 25psi (or less). i.e. 10psi difference is about normal for it to light up. Your sensor (one of them) may be a bit freaky. If you can get the dealer to find it (which sensor) and replace it, do it before warranty expires.
Typically dealer tries to sandbag you by resetting the light, and often it goes away for a while and then comes back. My friend's Lexus LS has the same problem. It has happened to him more than twice. He has learned to ignore it. (bad idea if you ask me)
My TPMS has been triggered once. A nail was found. It really worked as intended for me.
Typically dealer tries to sandbag you by resetting the light, and often it goes away for a while and then comes back. My friend's Lexus LS has the same problem. It has happened to him more than twice. He has learned to ignore it. (bad idea if you ask me)
My TPMS has been triggered once. A nail was found. It really worked as intended for me.
I thought this too back when we had our Mazda 3. Then one day it came on and sure enough, the tire was low and had a nail in it.
Funny thing is that a few days after that post, I heard the loud beep in the cabin and had no idea what it was. I looked around and saw the tire pressure indicator light lit up....it then went off after a few seconds. When I drove home I immediately measured the pressure in the tires and all 4 were dead on around 35psi as set.
Not sure if I have a faulty sensor in the car, in the tire or if there was some type of interference when I was driving in traffic. 8 possible points of failure and I'm hoping it happens again soon before I hit 36K in the next few months.
- :
- 2022 CX-5 Turbo
Why 8?
Our TPMS has four sensors and one central receiver. That is 5 to me.
If it goes away, I wouldn't worry about it.
Wireless being wireless, false alarm is not impossible.
Don't forget the 4 sensors/transmitter....1 in each tire......makes 9 I guess
Hmm....mine have been pretty touchy too then - whenever the weather dips, the TPMS has been lighting up...and when the temps have climbed again, it's gone away a couple of times.
I finally was curious enough to get a read on them and took them in today to Discount Tire - the tire pressure readings were 33, 34, 33, and 32. All were inflated back to 34psi and after driving away from Discount Tire, the TMPS light went away after I hit ~25mph.
I finally was curious enough to get a read on them and took them in today to Discount Tire - the tire pressure readings were 33, 34, 33, and 32. All were inflated back to 34psi and after driving away from Discount Tire, the TMPS light went away after I hit ~25mph.
- :
- 2022 CX-5 Turbo
34 psi is what is recommended.
The ECU is not supposed to gives out warning unless there is a 20% or more drop in PSI.
Like all wireless components, wireless sensors have higher tendency to give out false warning. Make dealer note the problem in their computer. Someday, when your CX9 is out of warranty, if you need to replace a sensor, make them cover it under warranty since it happened when it was still under it...
The ECU is not supposed to gives out warning unless there is a 20% or more drop in PSI.
Like all wireless components, wireless sensors have higher tendency to give out false warning. Make dealer note the problem in their computer. Someday, when your CX9 is out of warranty, if you need to replace a sensor, make them cover it under warranty since it happened when it was still under it...
It's funny, I remember people that have BMW's just would drive into the dealer if their tire pressure was low, and tell them to fix their car...I missed those days!
I wish I had TPMS on my car, the other night I had a very low rear tire, and the car's rear end almost came loose on an exit ramp. The next morning, the rim was touching the ground. Threw on the spare really quick, and plugged it over the weekend. It's amazing how many people don't know how to change a flat let alone repair one. (scratch)
I wish I had TPMS on my car, the other night I had a very low rear tire, and the car's rear end almost came loose on an exit ramp. The next morning, the rim was touching the ground. Threw on the spare really quick, and plugged it over the weekend. It's amazing how many people don't know how to change a flat let alone repair one. (scratch)
