2004 Tire Pressure Monitoring System
- Thread starter Hunter450
- Start date
I'm getting a set of 4 OEM Sport 17s for the winter but they don't have the tire pressure sensor in them. I was quoted $160CAD per sensor for new ones! Anybody know where to buy these online?
leftyrb your scenario gives me hope that I may not need them considering the $700 price tag.
leftyrb your scenario gives me hope that I may not need them considering the $700 price tag.
jjjheimer
If you have bought the sport model, the usual 'take-off' rims won't fit the Sprt, due to the larger calipers.
You can buy new sensors from the dealer or a grommet kit that I think would include the rubber parts that can be used when mounting the sensors in another set of rims.
If you have bought the sport model, the usual 'take-off' rims won't fit the Sprt, due to the larger calipers.
You can buy new sensors from the dealer or a grommet kit that I think would include the rubber parts that can be used when mounting the sensors in another set of rims.
The second set of wheels are 17 inch sport wheels. I spoke with my dealer today regarding sensors - they're quoting $140 per wheel. Which sucks ass. I was really hoping to avoid them entirely and the dealer is taking the easy way out - saying they don't know what will happen, and pulling the fuse may trigger a CEL and why don't you just buy new sensors to be on the safe side. I am I reading your post right - that you've got a set of winters without sensors that don't set off the TPMS dash indicator?
I am I reading your post right - that you've got a set of winters without sensors that don't set off the TPMS dash indicator?
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Yes, I do have a set of winter wheels without sensors. Sometimes the dash indicator illuminates and as other times, it does not. Don't have an explanation
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Yes, I do have a set of winter wheels without sensors. Sometimes the dash indicator illuminates and as other times, it does not. Don't have an explanation
just thought i'd add my experience.... 3 weeks ago i went up to the mountains to do some snowboarding. i've never before had my TPMS light come on. woke up in the morning and on my way to the slopes it lit up (constant on). i stopped the car, checked the pressures, all around 34, and continued on my way. when i was done riding for the day and driving back to the condo, the light went out. i've had this happen to me now 3 times. its on after a cold night, and off in the afternoon. i went up to the mountains a lot last year, and it never lit up then.... and it only does it intermittently to me now. the car has never been covered in snow, just in cold weather.
so, i dont know whats going on, but as long as the symptoms are always the same, i'm ok with it it... i guess
so, i dont know whats going on, but as long as the symptoms are always the same, i'm ok with it it... i guess
the irishman
New member
The air pressure sensors are little wireless transmitters mounted behind the valve in each wheel, even the spare. The receiver is between the headliner and the roof, toward the rear of the vehicle. The sensors are powered by a lithium battery mounted to each sensor. To get the maximum life from the lithium battery (who wants to dismount a tire just to change a battery?) the sensors don't transmit until the pressure gets too low. Then the tire with the low pressure (remember the Ford Explorer/Firestone tire debacle?) transmits the problem to the receiver and voila the Low Tire Pressure dash light comes on.
So, if you are using aftermarket wheels, with no sensors, this is not a problem because there is no sensor available to transmit the low pressure warning.
Keep in mind when having any tire/wheel service performed that you should mention to the technician that the sensors are there. Else they might damage them. Some tire companies don't even want to mess with these factory wheels at all, for fear that the customer will blame them if the low pressure warning system someday stops working.
So, if you are using aftermarket wheels, with no sensors, this is not a problem because there is no sensor available to transmit the low pressure warning.
Keep in mind when having any tire/wheel service performed that you should mention to the technician that the sensors are there. Else they might damage them. Some tire companies don't even want to mess with these factory wheels at all, for fear that the customer will blame them if the low pressure warning system someday stops working.
GalacticRunner
New member
My experience with the pressure system started about a week and a half ago when the cold weather hit. Every morning when I get in truck the indicator stays on, for I'd say 1st 10 miles or so. When the tires warm up, light goes out and doesn't come back on until next morning. Have'nt checked my tires yet, figured it has something to do with the changes in temperature.
I have the same crap happening. I've added air to my tires now running 35 psi, and the weather is getting cold so the light came on. Tried to add air to the spare at the gas station but I have sport wheels and the angle won't let me add air. I guess I will go by the dealers and let them add the air, what a POS setup. Is it the air pressure difference or is it the total air pressure that sets of the alarm? Gets cold pressure goes down in the spare the alarm goes off?? Or it gets cold air pressure goes down I add air to the tires on the ground and the air pressure difference between the spare and the tires on the ground causes the alarm to go off??
Anytime my air pressure light came on, it was one of the tires on the ground, not the spare. I run my tires at the recommended pressure that is on the door jamb. Recently, when cold weather hit, one of my front tires was low, causing the light. I have now installed my winter rims with rubber valves, and no light yet, but it came on intermittently last winter.
To chime in here and keep this thread active, I have just installed aftermarket wheels and tires with regular, rubber valves. No TPMS light for a week and then it started flashing. I topped up the spare but the light is still flashing. My wife says it drives her crazy. I don't even notice it. Maybe I'll put a piece of tape over the lens.
If anyone figures out how this thing works, let me know.
If anyone figures out how this thing works, let me know.
sharp4runr
New member
Is the TPM sensor mounted on the tire or on the rim itself? I want to know if I replace my tires will I need to transfer the sensors to the new set.
The idea here is to find the connector to the sensor, disconnect it, and somehow determine the resistance of the sensor on the connector terminals when no MIL.
Then on the input of the ECU side of the connector, you connect a resistor that equates to an "in range" load value that the sensor would put out under nominal conditions.
We do this on the VSV (vacuum switching valve) connectors on the Supra when we go to a aftermarket turbo set-up. This so we don't get a "check engine" MIL. The "check engine " light will respond to all other conditions so it's much preferred over just removing the lamp bulb or using tape.
Put simply we need to place the correct resistor across the connector terminals going to the ECU and stow the sensor connector. Just to fake out the computer and give it an in range value. Of course this means the sensors wont tell us if our tires are low, but I can usually catch that
Just a thought...
Then on the input of the ECU side of the connector, you connect a resistor that equates to an "in range" load value that the sensor would put out under nominal conditions.
We do this on the VSV (vacuum switching valve) connectors on the Supra when we go to a aftermarket turbo set-up. This so we don't get a "check engine" MIL. The "check engine " light will respond to all other conditions so it's much preferred over just removing the lamp bulb or using tape.
Put simply we need to place the correct resistor across the connector terminals going to the ECU and stow the sensor connector. Just to fake out the computer and give it an in range value. Of course this means the sensors wont tell us if our tires are low, but I can usually catch that
Just a thought...
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Well, it finally happened to me as well... I had the truck parked at a friends house for a few hours, it was pretty cold...40 degrees or so. When I got in and drove, the light came on. I didn't think much of it...the next day light was still on as I drove it to a mall. When I came out and got in, light was out..it was warmer at this point. Haven't seen the light since.
I know this light isn't a real big deal...but it's kinda annoying being these are new vehicles we are talking about.
I know this light isn't a real big deal...but it's kinda annoying being these are new vehicles we are talking about.
Mine was the spare. Had to lower it to fill it. Set all of your tires to 35 psi including your spare and that should cover you even during below "0" weather. Your tire pressure will go down 1 psi for every 10 degree drop in temp. The light will come on when they get below 28 psi's.
PS- I find that 35 psi is a good setting for ride quality and tire wear.
PS- I find that 35 psi is a good setting for ride quality and tire wear.
