Dear Dr. R.V. Shrink:
We spent a fortune on a tire monitor for our motorhome that is more hassle than it's worth. It works half the time and I am not sure it is even accurate.
My wife thinks I wasted money on a device that makes me more nervous with bad readings than if I didn't know at all what pressure changes were taking place.
Did I just get a lemon? Should I even worry about tire pressure? Am I being too cautious/paranoid? ----Airhead in Arizona
The backbone of these devices seems to be the batteries that let them communicate. The valve relays power off those expensive little watch batteries. The main relay should be able to connect to your coach battery banks or run off AA batteries.
Ninety percent of the time it turns out to be a power issue that breaks communications between relays and monitor. I would suggest checking all of your batteries, possibly replacing them, then fire everything up and see what happens.
Since you have already invested your hard earned money in a system, why not benefit by it. Don't get frustrated. Get to know your system. Make sure you read and understand the manual, contact the manufacturer if you have questions, or hook up with a dealer that can fine tune and run you through the process of initializing.
If you are hauling a toad, it will save you a lot of money if you can see a problem before it gets critical. Same goes for the coach. If you can notice a low tire before it goes flat you will save yourself the danger of a blowout and the cost of a new tire damaged by running on low pressure.
One problem averted could pay for the entire system. Also, when working properly it will give you peace of mind.
You would be amazed at how far you can haul a toad with a flat before you realize you have a problem. It can be very expensive, causing tire, wheel, strut or body damage in a very short distance.
So become an expert "Airhead."
--Keep Smilin', Dr. R.V. Shrink