quote:

Originally posted by pbramlett:

ILS glidepath for military and non military is at 328-356mhz range. The localizer that we tune in is in the VHF AM Spectrum.

True, just as you stated. Glideslope frequencies, while not a secret, are generally hidden; we do not tune them directly, as they are paired with localizer frequencies (odd tenths in the 108.1x to 111.9x range).

Oz_Shadow said that this was happening near a small airport, so I mentally questioned whether there would be an ILS with glideslope at a small airport. Nowadays GPS approaches are more common than ILS at small airports. My thought was that there might be military activity overhead, for example if his small airport was near a military air base, or maybe near an MOA or other area where there is a fair amount of military traffic, and consequently, transmissions in the UHF band.

quote:

Originally posted by FHHM213:
The cause may lie with a cold wind, solar flare, spoiled milk and / or many other should-be-irrelevant factors.

The notion, invention and requirement of TPMS is stupid. If the warning light comes on, stop and look at the tire (and, better, quickly check the pressure with a simple pencil gauge). If fine, keep driving. That has worked for me for the last 50k miles of the 162K miles driven on my Tundra.

If my comment offends an engineer involved or infatuated with the development of TPMS, I’m sorry. But, you should have applied your talent toward something more valuable.

I feel better now. Everyone take a sip and get back to decorating the tree and holiday cheer!

I'm not a fan of the government requiring things and I yield to no man in my cheapness. While I enjoy checking my vehicles for oil level, tire pressure, coolant level and assorted other things, some other people think this is hard or dirty or time consuming work. I think the biggest contribution of TPMS systems would be to inform people of a low tire or a safety issue. Let's say your wife is out driving alone and picks up a nail and the tire starts to go down. On comes the warning and she can possibly get to a better or safer place to deal with the tire. Lets say you are elderly and can't check your tires every month like you are supposed to. We all do check them every month don't we? By the way, I don't get the Walmart shop my groceries for me either. I do respect anybody's right not to like the systems.

quote:

Originally posted by FHHM213:
<snip>
The notion, invention and requirement of TPMS is stupid.
<snip>

I absolutely disagree with you. I love the TPMS of my Sonata that simultaneously displays the pressure in all four tires. Accurate too – agrees with the pressure reported by my Milton S-921 tire gauge.

Fair enough.

But my wife hasn’t bothered to flip to the other onboard screen to check the displayed readings for her tires and my mom still has to go to a full serve gas station (if I’m not in town) for them to determine which tire (for her simpler TPMS warning light) is low and - more importantly, to fill it. I truly haven’t noticed any real improvement in their or my driving life as a result of the technology.

I realize that some might appreciate an app that could work with ones iWatch to predict & execute the needed purchase of toilet paper. But I personally haven’t known many persons that have really struggled to timely buy such with older methods. Your mileage may vary.

My response was crass. Sorry.

Let me just restate by commenting that we often let our enthusiasm for new technology cloud our judgement as to whether an existing problem is significant and / or if it can truly be fixed by a mere tool. With a modest level of driving experience, anyone can visually spot an overly-low tire and any driver has ample opportunity to look at the tires.

The fact that tires are often neglected is not because we lack info (as to a brewing problem), it is because we procrastinate in addressing that problem once we have the info. It is akin to watching someone drive on a temporary spare for 2 months.

Wife called the other day to say the dash tire light came on in her Jetta, so she looked around and found the low front tire. She got it back to proper pressure at her lunch break that day using a portable compressor I gave her. When she got home, I took the wheel off and brought it in the garage to inspect for what screw or nail she ran over. Turns out it was a cracked wheel! I guess she nailed a pothole just right and took a small chunk out of the inside portion of the rim. This also made a 1" long crack on the aluminum wheel from the edge. Wife is riding on the full size spare while the replacement wheel is on the way. Glad she got the warning and checked it out.

Before anyone says "she should have known there was a problem" the car has fairly low profile tires and clearly said that she felt no difference driving the car with the low tire pressure.....

quote:

Originally posted by jimmy123x:

quote:

Originally posted by Oz_Shadow:
UPDATE AFTER SUGGESTIONS HERE


As an update, it seems to be more time/distance related when temps are around 32. I went another way and it started blinking approximately the same time/distance. It blinked for 1 Mile, was solid 2 miles then went off.

I would guess this started close to 10 minutes into each trip and a few miles.

When air temp is 32F, air pressure in tires is much lower than when air temp is say 80F. Check your air temp when it's cold out and see what it is. Might just be the TPMS sensors doing their job.

As noted in my OP, pressure is fine. I set them to 37 when it was about 32 out.

Guess one or more is just failing on me.

I once had a TPMS sensor give me a 30 second heads up on the interstate. I managed to get from the far left to the far right lane preparing to exit when it shredded.

Have you always put in 37 PSI? I use 30-32 or so on my '10 Forester.

quote:

Originally posted by BlackTalonJHP:
Have you always put in 37 PSI? I use 30-32 or so on my '10 Forester.

No. That gives me some room for when the temps get below zero. And you should see our potholes!

Wife and friend drove our Ford Flex to our airport to drop off another friend.... pulled up to the front and the AC kicked off and defrost came on high and would not turn off......

quote:

Originally posted by Blume9mm:
Wife and friend drove our Ford Flex to our airport to drop off another friend.... pulled up to the front and the AC kicked off and defrost came on high and would not turn off......

You think your car’s AC was activated by air navigation radio signals?