help! so for a couple days now my tire pressure light has been on, and i can't seem to figure out why, i've checked the air pressure on all 4 tires and all are at the same 32PSI they have been at for the past 6 months here in San Diego, and i even lowered the psi to 30 for a day and nothing, anyone who knows what i'm missing please let me know.

specs:

20" Stance sc5 wheels
9X20 F
10.5 X 20 R

255 F
295 R

 

What year is your G? It could be bad sensors. My friend had the same issue few weeks ago, checked it out, two bad sensors. Got them replaced, and no more lights.

 

Blinking or solid on?

 

TPMS are very touchy...you can go to the dealership and have them check if its even on. Usually if it was fine before then off is one of two things...
I used to sell them with a Tire company I worked for...
1. Went bad meaning no longer sending the signal to the car.
2. The Gaskets around the TPMS went bad which there is a rebuild kit for them..cheap too...the vibration yet changing rims the installer could have turned to tight the nuts on top causing it to shut off due to vibration.

Note any time TPMS is changed to different rims their suggestion is to replace the two gaskets top and bottom of it. Pending how old they are or were they needed new ones. Look up online for the kit...not much $$$ but will save the hassle of buying new ones. Yet if you read there is a actual tork setting for them with a special tool to do it...crazy but every good tire shop should have one...

Great if this helps its just my experience with them.

 

Just spent 2 weeks going back and forth to the dealer putting over 300 miles on my G37S and using up a tank of gas in the process.

My two week nightmare with my Tire Pressure Monitor Sensors is finally over.

This issue began two weeks ago on the first morning driving to work in the pouring rain, sleet and snow with a I Phone 4S just being activated from my old 2G Blackberry. That was a Tuesday. Tire pressure was checked and all four wheels were above 32 lbs. Air was later added to all four tires to 35lbs and the warning light went on and off the rest of the week.
A trip to the dealer resulted in the replacement of two rear wheel sensors that were not communicating.

Driving home after about 15 miles the Tire Pressure Warning light came on again.

Drove back to the dealer and they replaced the antenna module located behind the glove box.

Began driving home and the warning light again came on at the exact same spot as I passed a cell tower.
Again turned around and returned to the Infiniti dealer where they gave me a loaner.

They updated some software into my vehicle but the tire pressue warning light issue continued with three different 2012 G37loaner vehicles including an EX35.

Infiniti tier 2 support thought it might be EZ Pass related so I requested a replacement EZ Pass and even drove one day without the EZ Pass thru the toll booths on both the Garden State Parkway and the New Jersey Turnpike.

The tire pressure warning light continued to come on with no EZ Pass and the I Phone turned off.
I finally sent an email and described my issue to to the President of AT&T Network Operations. The following day I received an email from Executive Escalations containing this link

http://www.crvownersclub.com/forums/14- ... -3g-2.html

When I got into my G37S yesterday to drive home from work before I started the vehicle I removed the I Phone charger from the 12v power socket.

The tire pressure warning light began flashing and then went out.

After driving a few miles I pushed the charger back in to the 12v power outlet.

At milepost 151 on the Garden State Parkway near the AT&T Cell Tower the tire pressure warning light began to flash. I immediately pulled it out and the warning light again stopped flashing and went out.
After a few more miles I pushed it back in and again near another cell tower it began to flash. Again I pulled it out and the warning light went out.
This repeated four times on my way home and each time by removing the charger from the power outlet the warning light goes out.

It appears the very first instance of the tire pressure warning light turning on prior to the purchase of the charger was vehicle related and Infiniti replaced the two rear wheel sensors and the antenna module under warranty.
The car charger emitting RF interference in the UHF range (315Mz) that is used by the wheel sensors to communicate to the ECU thru the antenna module just added to the difficulty of troubleshooting.
Also each tire pressure monitor sensor is paired to the correct position in the vehicle.
I hope this post helps anyone else having strange tire pressure monitor issues.

Telcoman

 

So in conclusion, apple/att=bad ...?

 

If your under warranty, go to the dealers and have them fix it. Most likely the battery is dead and they have to put a new one in (which is replacing the whole thing for you).

 

According to the dealer each sending unit has a battery in them that last about 4 to 5 years and then no longer send that signal to the car.

This is basically what they look like...except in my wife's G the color was green. They did try resetting them which they said sometimes works before having to replace them.



They are about $100 or so a piece and the dealer said they could save us a bit of money and do all 4 for about $400. My wife had the solid warning light on...and the dealer did confirm a bad sensor on her front rim. Our dealer did however replace the sensor for free!! Shocking yes I know but they are a great dealer.

 

I just bought a used Infiniti coupe ('08 model). It had the light on. The nearest Infiniti dealer is in Greenville, SC, 75 miles away, so at the dealer's suggestion I took it to Nissan. They diagnosed 2 dead sensors in the front and charged me $503 to replace them. It was paid for by the dealer who sold me the car. The sensors are available aftermarket for about $50-60 each and after they are installed in the wheel you can program them to the car yourself. The process is in the service manual. Basically it involves setting each tire at a different pressure and driving the car till it programs.

 

Fill your tires with nitrogen can cost around 20 at your dealer. Had the same prob and it has been off since.

 

your under warranty, go to the dealers and have them fix it.