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My Tire Pressure Light just started flashing yesterday, right when it started getting hot over here. It comes on after I get on the highway doing 70mph or so for about 5 minutes.
If I shut the car off and immediately turn it back on, the light goes off, for a while.
I know the PSI is supposed to be 32, and I checked the PSI and it reads around 36psi after driving, so that's when the tires are hot.
Anyone else have that problem and any suggestions of a fix? I am trying NOT to go to the dealer...they suck.
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If the light comes on and stays on with a chime then it is indicating an under or overr inflation. If the light is blinking then it is indicating a malfunction in the system such as not being able to read a sensor. It is normal for the lamp to not indicate any abnormality until several minutes after the car has been turned on. Check you Owner's manual then take it to the dealer for diagnostics.
Originally posted by -8- ..... any suggestions of a fix? I am trying NOT to go to the dealer...they suck.
Have you tried the "Wheel Unit Autoregistration" steps from the Tire Pressure Monitoring System Service Tips TSB (center of page 5/6)? It's easy to do and if you get lucky, it might do the trick. Let us know if you try it.
Mine is flashing now-
will a 1psi difference in 1 wheel set this off?
I believe a flashing light indicates a malfunction in the system - check for any OBDII codes? What year and trim level is your car?
Be sure you're using a GOOD tire pressure gauge to measure the pressures (not the crack-pipe looking ones) and that your checking them under the same conditions (i.e. if 1 side of the car is parked in the shade and 1 in the sun you will easily see more than 1 PSI difference between the tires on each side of the car just due to the sun heating up the tires).
I'm not sure if the RX8's TPMS system uses the car's ABS system to measure individual wheel speeds and determines tire pressures from that, or if it independent of the ABS system. If it uses the ABS system, then yes I have had cars (not my RX8) that would trigger the TPMS over a 1 psi difference.
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"Stuff sold by the gram is always more interesting than stuff sold by the pound"
I believe a flashing light indicates a malfunction in the system - check for any OBDII codes? What year and trim level is your car?
Be sure you're using a GOOD tire pressure gauge to measure the pressures (not the crack-pipe looking ones) and that your checking them under the same conditions (i.e. if 1 side of the car is parked in the shade and 1 in the sun you will easily see more than 1 PSI difference between the tires on each side of the car just due to the sun heating up the tires).
I'm not sure if the RX8's TPMS system uses the car's ABS system to measure individual wheel speeds and determines tire pressures from that, or if it independent of the ABS system. If it uses the ABS system, then yes I have had cars (not my RX8) that would trigger the TPMS over a 1 psi difference.
all the Rx8's use a sensor mounted on the wheel to measure tire pressure, so the ABS isn't used.
the 04-05 (off the top, might be just the 04's), look for high and low pressure, and it will blink the light if the tires are too high, or if there is too big of a difference between the highest and lowest tires, OR if there is a problem.
the 06+ cars got simplified a little, because its less of a PITA. the light only comes on for low pressure, and it'll blink if there is something wrong with a sensor.
the sensors are actually pretty inexpensive, common to most Mazda's, and requires no computer programming. part number is BBM2-37-140B list price is $90, but you should be able to find em for $50-60
Mine did this and it ended up being a bad wheel sensor. The trick is finding which one is not working. No my TPS flags everytime it gets cool out side. Even though I am running 32 PSI all around.
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Speed costs money kid! How fast can you afford to go?
I believe a flashing light indicates a malfunction in the system - check for any OBDII codes? What year and trim level is your car?
Be sure you're using a GOOD tire pressure gauge to measure the pressures (not the crack-pipe looking ones) and that your checking them under the same conditions (i.e. if 1 side of the car is parked in the shade and 1 in the sun you will easily see more than 1 PSI difference between the tires on each side of the car just due to the sun heating up the tires).
I'm not sure if the RX8's TPMS system uses the car's ABS system to measure individual wheel speeds and determines tire pressures from that, or if it independent of the ABS system. If it uses the ABS system, then yes I have had cars (not my RX8) that would trigger the TPMS over a 1 psi difference.
04 6speed MT w/75k miles-
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