LOW TIRE AIR INDICATOR

I've checked all 4 tires; pressure fine; increased PSI to super high then reduced; not solved;
Could the spare be the culprit?

 

I had no idea why that little icon lit up on my dash last year so I took it down to the tire shop and asked them about it, they did some checking and found out the spare was indeed the culprit, they added 10 psi and the low air indicator went away.

 

Try them all inflated to 36 psi. If no joy, it might be time for new batteries

 

Put some air in your tires then hit the reset button under the dash

 

Thanks bluezzy

 

Reset button?? Where is that?

 

Tacosail: Batteries? Where?

 

Some years have a TPMS sensor on the spare, some don't. The sensor is part of the valve on each tire, and has an internal battery.

 

Okay, the battery is on the spare. Got it. Thanks

 

The battery is on all tires with a tpms sensor.

 

X2

 

When I bought my truck, the TPMS light was on. We made sure the tires were aired up. The light was still on. The temp/ direction thingy was out. I told the car lot both were probably expensive fixes and talked them down a little more on the price. After I bought it, I found out from TW that the spare has a sensor and that the temp direction thingy just needed the resistors soldered. Both free fixes.

 

Why not just dissable the tpms light? Super easy to do and never need to worry about that annoying light again. Plus it saves $$$$

 

Since the OP's truck is in 07, like mine, good chance the batteries in one or more of the sensors are dead. They last 7-10 years, mine I think lasted 10. You have a couple of choices from least expensive to most expensive under the assumption they are dead. Check that reset button first as mentioned above.

1. Ignore the dumb light on the dash and do like everyone had to do b4 the dumb LTPS were mandated: periodically check the tire pressure, always take a glance at the tires when walking up to the truck that they don't look low.
2. Search the forum for what 757yotas describes
3. By all new sensors and search the forum for the method of placing them in a sealed tube in the vehicle to trick the computer to think you have good sensors.
4. By all new sensors and have them installed in all five rims. Tires have to be removed from each rim in order to do this.

 

If I get to that point I'll just place a sticker over the light. But # 3 above is interesting.

 

If Scangauge ever gets it worked out so that you can easily switch to alternate screens, you will be able to check the pressure in all your tires with a simple push of a button.

 

There is a sensor in the spare on 2007 models. Check it.

 

Does the light blink when you turn the truck on? if so you have a dead battery in a TPMS sensor (each one has an individual battery which is mounted to the valve stem inside your wheel) Air up to 34-36 psi in all tires including the spare.Then turn ignition on and hold the button under the steering wheel for a decent amount of time. Should fix it.