Air Pressure Sensors - Automotive Repairs - DIY Chatroom Home Improvement Forum
Advertisement


Go Back   DIY Chatroom Home Improvement Forum > Do It Yourself > Automotive Repairs

CLICK HERE AND JOIN OUR COMMUNITY TODAY...IT'S FREE!

Like Tree7Likes
Reply
 
Thread Tools
Display Modes
Old 03-25-2020, 01:34 PM   #1
Member
 
Join Date: Sep 2010
Location: Pa.
Posts: 389
Rewards Points: 663
Default

Air Pressure Sensors


Two weeks ago, My dash tells me I have low pressure in one of my tires.
I checked all the mounted tires and they were at the recommended pressure.
So I checked the spare and found it was 20 lbs. I pressureize it to 32 lbs.
But the dash light would not go out. If there is a reset button on my 2004 Toyota 4runner, I could not locate it.
Now today, when starting my vehicle, the low pressure signal is now out.
Anyone have an idea of whats going on?
No matter what, I intend to purchase new wheels and sensors this August.
I already been told that my sensors are past their life expectancy.
rjordan393 is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 03-25-2020, 02:05 PM   #2
Member
 
Join Date: Nov 2019
Location: NY and FL
Posts: 831
Rewards Points: 1,666
Default

Re: Air Pressure Sensors


Some use sensors in the valve stems while others use the wheel speed sensors that are part of the antilock brake system. The valve stem type have an internal battery that can expire. A bad wheel speed sensor usually sets the ABS light, too.
Old Thomas is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 03-25-2020, 02:50 PM   #3
Usually Confused
 
lenaitch's Avatar
 
Join Date: Feb 2014
Location: Central Ontario, Canada
Posts: 5,840
Rewards Points: 1,240
Default

Re: Air Pressure Sensors


The TPMS light on my 2008 Nissan Frontier would come on and random times, sometimes steady, sometimes flash, then go out again. It would also often light up at a certain intersection (RFI?). I pretty much ignored it.
Depending on the manufacturer, some systems take a certain distance above a certain speed before they will re-set.
__________________
_________________________________________
Pro patria
lenaitch is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 03-25-2020, 05:43 PM   #4
Member
 
Join Date: Sep 2010
Location: Pa.
Posts: 389
Rewards Points: 663
Default

Re: Air Pressure Sensors


That appears to be what is happening. Thanks.
rjordan393 is offline   Reply With Quote
Old 03-25-2020, 07:53 PM   #5
Member
 
ukrkoz's Avatar
 
Join Date: Dec 2010
Posts: 1,026
Rewards Points: 1,410
Default

Re: Air Pressure Sensors


Go to Discount Tire. they have handy tool that scopes TPMS batteries. For 2004, I bet they are dying.
raylo32 likes this.
__________________

ukrkoz is offline   Reply With Quote
Old 03-26-2020, 06:01 AM   #6
Member
 
raylo32's Avatar
 
Join Date: Nov 2006
Location: Maryland (DC 'burbs)
Posts: 2,130
Rewards Points: 1,328
Default

Re: Air Pressure Sensors


I've been wondering how long the batteries in my 2009 Tacoma are gonna last. So from this I can infer that maybe I've got ~5 more years.... although I'll probably have them changed out next time I get tires.

Quote:
Originally Posted by ukrkoz View Post
Go to Discount Tire. they have handy tool that scopes TPMS batteries. For 2004, I bet they are dying.
__________________
Live long and prosper.
raylo32 is offline   Reply With Quote
Old 03-26-2020, 08:14 AM   #7
Member
 
ukrkoz's Avatar
 
Join Date: Dec 2010
Posts: 1,026
Rewards Points: 1,410
Default

Re: Air Pressure Sensors


My experience from toyotanation shows around 10 years. More or less.
Unless you want to DIY them, Discount Tu=ire appears to have the best pricing in the country.
SPS-1 likes this.
__________________

ukrkoz is offline   Reply With Quote
Old 03-26-2020, 08:15 AM   #8
Member
 
raylo32's Avatar
 
Join Date: Nov 2006
Location: Maryland (DC 'burbs)
Posts: 2,130
Rewards Points: 1,328
Default

Re: Air Pressure Sensors


I am already at 12 1/2 years.... on borrowed time, I suppose. Unfortunately we don't have Discount Tire in our area. I am considering getting a new set of OEM wheels since mine are so ratty and refinishing them would cost almost as much $$. If so I'd just order a wheel/sensor/tire package.. and then have to pay the dealer to program them... or find a capable scan tool.

Quote:
Originally Posted by ukrkoz View Post
My experience from toyotanation shows around 10 years. More or less.
__________________
Live long and prosper.

Last edited by raylo32; 03-26-2020 at 08:19 AM.
raylo32 is offline   Reply With Quote
Old 03-26-2020, 08:33 AM   #9
Usually Confused
 
lenaitch's Avatar
 
Join Date: Feb 2014
Location: Central Ontario, Canada
Posts: 5,840
Rewards Points: 1,240
Default

Re: Air Pressure Sensors


Or we could all, you know, check our tire pressure the old fashioned way on a halfways regular basis.
Dave Sal, mark sr and CodeMatters like this.
__________________
_________________________________________
Pro patria
lenaitch is offline   Reply With Quote
Old Yesterday, 06:05 AM   #10
Member
 
Join Date: Feb 2014
Posts: 4,989
Rewards Points: 5,134
Default

Re: Air Pressure Sensors


Anybody else find this to be a PITA.

I believe this confirms the tire sensors lets out air to check the pressure and leads to constantly have to refill.

ron45 is offline   Reply With Quote
Old Yesterday, 06:17 AM   #11
Naildriver
 
chandler48's Avatar
 
Join Date: Jun 2017
Location: Young Harris, Georgia
Posts: 8,573
Rewards Points: 1,774
Default

Re: Air Pressure Sensors


Same thing happened to wifey's Honda. Checked tires and they were within range. Took it to tire dealer we use and he said it was the cold air the day it happened. Once it heated up, the sensor light went out. It was excessively cold that day, as I remember.
__________________
Larry......
Half of Communications is Listening, and You can't Listen with your Mouth.
chandler48 is online now   Reply With Quote
Old Yesterday, 06:23 AM   #12
Member
 
Join Date: Feb 2014
Posts: 4,989
Rewards Points: 5,134
Default

Re: Air Pressure Sensors


Quote:
Originally Posted by chandler48 View Post
Same thing happened to wifey's Honda. Checked tires and they were within range. Took it to tire dealer we use and he said it was the cold air the day it happened. Once it heated up, the sensor light went out. It was excessively cold that day, as I remember.
What do you think about a car that plays tricks on you.?

Has anybody tried this.?

ron45 is offline   Reply With Quote
Old Yesterday, 07:38 AM   #13
retired painter
 
Join Date: Jun 2017
Location: east tenn
Posts: 8,111
Rewards Points: 224
Default

Re: Air Pressure Sensors


Quote:
it was the cold air the day it happened

On my 2010 Jeep JK the idiot light for tire pressure goes off every winter on the first very cold day. As far as I know it doesn't go out by itself. Adding 2lbs to each tire does. Seems crazy that it will light up when the tire pressure falls below 35psi.
mark sr is online now   Reply With Quote
Old Yesterday, 08:40 AM   #14
Member
 
raylo32's Avatar
 
Join Date: Nov 2006
Location: Maryland (DC 'burbs)
Posts: 2,130
Rewards Points: 1,328
Default

Re: Air Pressure Sensors


My best TPMS story resulted from when the minimal systems that mfgs installed to meet the requirement intersected with a woman who knows nothing about cars. First, she had the stupid minimal system like on most cars where alls you have is an idiot light that tells you that you have "a" low tire but not how low or which tire it is.

So, this lady gets a TPMS low pressure light on her car, a Lexus ES350 IIRC. She was so proud when she told me how she had fixed the problem by inflating ALL her tires and the light went out. She also told me she had to do it 3 times that week. I instantly knew what was going on and told her she was extremely lucky she mentioned it to me and took her out to the parking lot to show her... that she had a screw in one tire and 55psi in the other 3.

IMO, all these TPMS systems should be required to show actual pressure for every tire. The basic system is not idiot proof enough.
SPS-1 and mark sr like this.
__________________
Live long and prosper.
raylo32 is offline   Reply With Quote
Old Yesterday, 08:48 AM   #15
Member
 
Join Date: Oct 2008
Location: Ontario
Posts: 5,410
Rewards Points: 9,734
Default

Re: Air Pressure Sensors


I have had a couple of cars now that the system does not check the air pressure continuously. On my first car with sensors, the car did not start checking pressure until you hit a certain speed (I think it was 5 or 10 mph). I suspect a centrifugal switch in the sensor to conserve the battery unless you are driving.

On my current car, it takes a few minutes before the sensors show pressures. Not sure what conditions are required to wake up the system. So if you just filled up the tire and started the car, it is not surprising that the warning light did not go out.

I think 10 years is a common design lifetime for the sensor battery.
SPS-1 is offline   Reply With Quote
Sponsored Links
Advertisement
 
Reply


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off





Top of Page | View New Posts