TST Repeater for TPMS

Do not get me wrong the TST 507 is a good system. Are there better ones I believe there is.

As long as you understand the limitations of your system and use a repeater or remote antenna when needed and make sure you are getting valid and timely reports from the sensors you should be OK.

I have noticed on this forum there are four things it is best not report anything bad about them.

Ram diesel trucks
TST TPMS systems
B&W trailer hitches.
MaxBrake brake controllers

These items have some very loyal followers that believe there is nothing in the market as good as these systems and some will go so far as to declare what you have as junk.

Had to install a repeater, was loosing spare fiver tire a few times. The monitor would just show nothing for that sensor, so I knew something was wrong. Got the repeater and all seems well. Even with all the so called issues this TST 507 saved me one time. Tire went from 110 to 80 lbs. WHEN I got stopped. Would not be without it.

It's pretty obvious that the loss of signal is not reported. Just drive away from the towed vehicle and the pressure will still show for an hour or so. On my system, if you pay real close attention you can make sure a sensor is being monitored as when a new reading is received, it continues to be displayed for 30 seconds. Certainly not the best way to tell, but at least it's something.

fj12ryder wrote:
I'm sorry 93Cobra2771, but I'm right and you're wrong. :)

Removing the sensor while it is in contact with the monitor will sound an alarm because it shows low/no air pressure. Now leave the monitor on and the sensor in place, and drive/walk away with the monitor, from the trailer/sensors . Make sure you are out of range, the best test is to go out to eat or shopping so you're plenty far away. It will be around an hour before you get an alert that the monitor has lost contact with the sensor.

This is the way the system is designed, and IMO is the only real flaw in the TST TPMS. That is the reason they recommend a repeater if you have a long trailer/5th wheel. If you ask them about this they will tell you it is operating as it supposed to.

Earlier this year I was leaving Harrison, Arkansas, after a stay of a week. I rarely check my TST monitor, relying on the alert to make a problem known to me. On an open stretch of hiway I happened to notice that I had one tire that was 10 psi lower and about 15° cooler than the other 5. I started looking for a place to pull over to check things out, when the pressure and temperature were now both in line with what the other tires were showing. What had happened is that the one tire was still showing the temperature and pressure from when I had first left the campground, about an hour before. It had been out of contact with the monitor all that time.

I have ran this test and fj12ryder is correct. After an hour, I finally received an alarm that communication had been lost.

RCMAN46 wrote:

avvidclif1 wrote:
It updates the pressure and temperature but I don't know how often. I doubt 5 min. If the pressure starts dropping rapidly it is immediate. A slow leak will show up and set off the alarm when it reaches the preset low.

Read your manual if you have a TST system. If you do not please do not cloud things on what you think.

I have a TST system and have had for 3 years. When I recently picked up a large thorn, think 1/2" diameter, it alerted within 100ft that the pressure was dropping and tracked it all the way down to 40 lbs which is where it was when I parked it. We were lucky and only 1/4mi from the house.

That's real world and not 5 minutes. I don't know about the driveaway part. When I unhook it's turned off and not turned back on until we are hooking up again. The trailer doesn't move until all 4 wheels have checked in.

fj12ryder wrote:
I'm sorry 93Cobra2771, but I'm right and you're wrong. :)

Removing the sensor while it is in contact with the monitor will sound an alarm because it shows low/no air pressure. Now leave the monitor on and the sensor in place, and drive/walk away with the monitor, from the trailer/sensors . Make sure you are out of range, the best test is to go out to eat or shopping so you're plenty far away. It will be around an hour before you get an alert that the monitor has lost contact with the sensor.

This is the way the system is designed, and IMO is the only real flaw in the TST TPMS. That is the reason they recommend a repeater if you have a long trailer/5th wheel. If you ask them about this they will tell you it is operating as it supposed to.

Earlier this year I was leaving Harrison, Arkansas, after a stay of a week. I rarely check my TST monitor, relying on the alert to make a problem known to me. On an open stretch of hiway I happened to notice that I had one tire that was 10 psi lower and about 15° cooler than the other 5. I started looking for a place to pull over to check things out, when the pressure and temperature were now both in line with what the other tires were showing. What had happened is that the one tire was still showing the temperature and pressure from when I had first left the campground, about an hour before. It had been out of contact with the monitor all that time.

Ever since I pointed out this flaw over a year ago I have received a lot of flak from members that do not know what they are talking about and possibly some that do not even own a TPMS.

I also watch my pressures often but you are the first to actually report this 1 hour flaw show in a manner in which we can be positive it can happen when connected to a trailer and travelling.

Two things that are known to be a fact about the TST system.

1. Pressure and temperature data is sent about every 5 minutes.

2. A loss of signal from a sensor will not be reported for about 1 hour.

What is important here is if a signal is received the timer is reset. So if we get lets say a signal once every 45 minutes we will never know that for most of the time we would not be notified of a rapid pressure loss or of a low pressure event.

avvidclif1 wrote:
It updates the pressure and temperature but I don't know how often. I doubt 5 min. If the pressure starts dropping rapidly it is immediate. A slow leak will show up and set off the alarm when it reaches the preset low.

Read your manual if you have a TST system. If you do not please do not cloud things on what you think.

I'm sorry 93Cobra2771, but I'm right and you're wrong. :)

Removing the sensor while it is in contact with the monitor will sound an alarm because it shows low/no air pressure. Now leave the monitor on and the sensor in place, and drive/walk away with the monitor, from the trailer/sensors . Make sure you are out of range, the best test is to go out to eat or shopping so you're plenty far away. It will be around an hour before you get an alert that the monitor has lost contact with the sensor.

This is the way the system is designed, and IMO is the only real flaw in the TST TPMS. That is the reason they recommend a repeater if you have a long trailer/5th wheel. If you ask them about this they will tell you it is operating as it supposed to.

Earlier this year I was leaving Harrison, Arkansas, after a stay of a week. I rarely check my TST monitor, relying on the alert to make a problem known to me. On an open stretch of hiway I happened to notice that I had one tire that was 10 psi lower and about 15° cooler than the other 5. I started looking for a place to pull over to check things out, when the pressure and temperature were now both in line with what the other tires were showing. What had happened is that the one tire was still showing the temperature and pressure from when I had first left the campground, about an hour before. It had been out of contact with the monitor all that time.

fj12ryder wrote:

Charlie D. wrote:

RCMAN46 wrote:

If it blinks once when you get a signal from a wheel sensor that will occur about every 5 minutes. The wheel sensors send signals about every 5 minutes.

Can you help explain this a little better? I don't understand. If the sensor sends a signal every 5 minutes it seems to me that it is possible that you could have a tire failure for 5 minutes before knowing it?

Actually with the TST system, you could have a tire failure and not know it for much longer than 5 minutes. If the monitor doesn't receive a signal from a tire, it could be an hour or more before it alerts you of the problem. During that time you could have a flat tire on that wheel and not be aware of it.

Wrong. Have the monitor reading the sensor, then remove a sensor and see how quick it alarms. My test showed 3-7 seconds.

Would be useless if it worked the way you described.

Charlie D. wrote:

RCMAN46 wrote:

If it blinks once when you get a signal from a wheel sensor that will occur about every 5 minutes. The wheel sensors send signals about every 5 minutes.

Can you help explain this a little better? I don't understand. If the sensor sends a signal every 5 minutes it seems to me that it is possible that you could have a tire failure for 5 minutes before knowing it?

Actually with the TST system, you could have a tire failure and not know it for much longer than 5 minutes. If the monitor doesn't receive a signal from a tire, it could be an hour or more before it alerts you of the problem. During that time you could have a flat tire on that wheel and not be aware of it.