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Tire sensor light cant decide what it wants to do

Hey all, So recently, my low tire pressure light has came in (I have an 08 G37S, 6mt)....whenever I start the car, the light blinks on and off, roughly every

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Old 05-23-2016, 04:50 PM   #1 (permalink)
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Red face Tire sensor light cant decide what it wants to do

Hey all,

So recently, my low tire pressure light has came in (I have an 08 G37S, 6mt)....whenever I start the car, the light blinks on and off, roughly every second, then comes in solid once the car has warmed up some.


I've checked all pressures in my tires, all read 36 or 36.5 psi

I've checked all fluid levels, all are nominal (roughly halfway between what is marked as a minimum and max)


I'm assuming it's just a bad TPMS sensor, but I'd like to hear of any other possibilities, if there are any other possible situations going on with it.

Thanks in advanced-
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Old 05-23-2016, 04:56 PM   #2 (permalink)
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Sounds like a bad sensor to me as well.
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Old 05-23-2016, 05:12 PM   #3 (permalink)
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from the owner's manual:

"TIRE PRESSURE MONITORING SYSTEM
(TPMS)
Each tire, including the spare (if provided),
should be checked monthly when cold and
inflated to the inflation pressure recommended
by the vehicle manufacturer on the vehicle
placard or tire inflation pressure label. (If your
vehicle has tires of a different size than the size
indicated on the vehicle placard or tire inflation
pressure label, you should determine the
proper tire inflation pressure for those tires.)
As an added safety feature, your vehicle has
been equipped with a Tire Pressure Monitoring
System (TPMS) that illuminates a low tire pressure
telltale when one or more of your tires is
significantly under-inflated. Accordingly, when
the low tire pressure telltale illuminates, you
should stop and check your tires as soon as
possible, and inflate them to the proper pressure.
Driving on a significantly under-inflated
tire causes the tire to overheat and can lead to
tire failure. Under-inflation also reduces fuel
efficiency and tire tread life, and may affect the
vehicle's handling and stopping ability.
Please note that the TPMS is not a substitute for
proper tire maintenance, and it is the driver's
responsibility to maintain correct tire pressure,
even if under-inflation has not reached the level
to trigger illumination of the TPMS low tire
pressure telltale.
Your vehicle has also been equipped with a
TPMS malfunction indicator to indicate when
the system is not operating properly. The TPMS
malfunction indicator is combined with the low
tire pressure telltale. When the system detects
a malfunction, the telltale will flash for approximately
one minute and then remain continuously
illuminated. This sequence will continue
upon subsequent vehicle start-ups as long as
the malfunction exists. When the malfunction
indicator is illuminated, the system may not be
able to detect or signal low tire pressure as
intended. TPMS malfunctions may occur for a
variety of reasons, including the installation of
replacement or alternate tires or wheels on the
vehicle that prevent the TPMS from functioning
properly. Always check the TPMS malfunction
telltale after replacing one or more tires or
wheels on your vehicle to ensure that the
replacement or alternate tires and wheels allow
the TPMS to continue to function properly."

I guess that answers my question...
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Old 05-23-2016, 05:20 PM   #4 (permalink)
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anyone know of a way to diagnose which specific sensor it is? I don't wanna have to pull the wheels one by one or pay to have it done....
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Old 05-23-2016, 10:27 PM   #5 (permalink)
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Most tire shops have tools to scan the TMPS sensor and they would probably do it for free if you end up replacing it there.

BTW: TPMS sensor has internal battery and would eventually run out.


Quote:
Originally Posted by hooey_b View Post
anyone know of a way to diagnose which specific sensor it is? I don't wanna have to pull the wheels one by one or pay to have it done....
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Old 05-25-2016, 12:18 AM   #6 (permalink)
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Did you check you spare tire?
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Old 05-25-2016, 07:04 PM   #7 (permalink)
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Quote:
Originally Posted by Rusty View Post
Did you check you spare tire?
there's a sensor in the spare...?

I was bout to just buy a whole new set of 'em
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