problem with TST 507 monitor

[audriver]

I hope it's OK to post this problem on this forum. I have seen where several folks have TST's systems and maybe there is an answer out there.

I recently purchased a TST 507 tire pressure monitor system from TST. I'm having a problem in that after programming the monitor for Fahrenheit and my high and low tire pressures and saving the settings, then after the unit is later turned off with the switch, the settings revert back to default settings when the unit is turned on. I know I had my settings programmed in because I made a short trip and it displayed each tire's pressure and temp in Fahrenheit and did not alarm. Then after turning off the monitor, the next time I turn it on, it alarms because it has reverted back to factory settings in centigrade which are much higher than my tire pressures. I am following the instructions exactly and the battery in the monitor is fully charged. The settings disappear whether the monitor is plugged into a live 12v socket or not. The system itself worked fine on a weekend trip and I like it but this is driving me nuts. I don't want to have to reprogram the monitor every time I use it because I will turn it off when the MH is in storage.

TST does have good customer service as I have read. Dan Covington worked with me over the phone for a while and concluded my unit must be bad. I sent it in for replacement and the new unit has the exact same problem. Since this is Saturday and I can't call TST until Monday, I thought I would see if anyone has some insight on this.

[Sky_Boss]

Originally Posted by audriver

I hope it's OK to post this problem on this forum. I have seen where several folks have TST's systems and maybe there is an answer out there.

I recently purchased a TST 507 tire pressure monitor system from TST. I'm having a problem in that after programming the monitor for Fahrenheit and my high and low tire pressures and saving the settings, then after the unit is later turned off with the switch, the settings revert back to default settings when the unit is turned on. ...

TST does have good customer service as I have read. Dan Covington worked with me over the phone for a while and concluded my unit must be bad. I sent it in for replacement and the new unit has the exact same problem. Since this is Saturday and I can't call TST until Monday, I thought I would see if anyone has some insight on this.

I would suggest that the mods move the postings in this thread...Your issue is not Winnebago specific. The following is a good place to move it to.

http://www.irv2.com/forums/f256/tst-...ems-69471.html

I won't disagree with your specific experience however I do have a totally different opinion...

When I started down the road of getting the 507 system I was thinking internal sensors. After receiving them and seeing how they would install in my 6 new tires along with deciding to use Dyna Beads, I changed my mind and got the screw on sensors that had to be taken off to add air to tire. TST made no bones about that change and shipped me replacements on the promise I would return the internal with shipping paid by them.

Then, after evaluating those sensors I just didn't like them at all. I think they are a PIA to put on and take off so I asked for the pass through sensors and again, they quickly shipped them and I returned them postage paid by TST. I even got a nice refund.

THEN......again... I ran into a technical problem with one sensor which they quickly replaced at no cost to me.

My only remaining issue is that OCCASIONALLY I loose connection to one of my rear sensors. Usually it is either the L or R inside. If I am on the move I remove the power, let it resync and I have seen all tires return. I will be adding a repeater for our toad we plan to add next spring and that should double up my coverage on my rear sensors too.

I have not experienced the programing problem you are having.

[Hikerdogs]

We have the TST 507 system and have not had the same experience. The fact that the monitor is blank when connected to 12 volt power leads me to believe there is a problem with either the cord or the power source itself. Anytime our monitor is plugged in the display is on (regardless of the position of the switch on the side of the monitor). Essentially ours is always on when plugged into a 12 volt source. When running on its own battery power the display is on only when the switch is in the up position.

Our system came with 2 power cords 1 plugs into the cigarette lighter/power port and the other can be hard wired into 12 volt hot lead. Both have built in fuses. The one on the cigarette lighter/power port cord is inside the plug. The one on the hard wire cord is in a separate holder. If you can shut off the monitor when plugged into a 12 volt source I suspect you aren't actually getting 12 volt power but rather still running on the battery. An easy way to tell is look at the battery icon in the lower right corner of the screen. The battery should show it's charging when plugged in.


Another possibility may be the way you hold the monitor when turning it on. According to the instructions All factory defaults are restored by pushing the +button and turning the monitor on at the same time. I inadvertently picked up the monitor in my left hand and turned it on with my right. It just so happened my left ring finger was pushing on the + button hard enough to clear all my settings and return the defaults.

[audriver]

Hikerdogs, I think you nailed my problem.

Yes, my monitor is on regardless of the switch position if the 12v socket power cord is connected to the 507 monitor and plugged in. I know this cord is good because I used it to charge the unit and also the red light on the plug is lit when connected.

The monitor was running all night on battery power and I just went out and turned it off and back on. I realized I was depressing the + button unintentionally due to the way I was holding it so I changed my hand position to hold the monitor by its edges. Well, guess what...I didn't lose my settings. I can't believe that's what I was doing every time, but I guess I was. Thanks, I feel like an idiot, but you saved me (and TST) a lot of trouble.

Thanks again Hikerdogs, and let me be clear that I am completely happy with my 507 system now.

[Rom]

Isn't it nice to have a "little" problem, post it in this forum and get a positive, working suggestion? That's why I love this great forum and it's helpful and knowledgeable members!!

[FIRE UP]

Well Gang,
This info is all great to read and understand. I've not purchased any tire pressure monitoring system yet and am still, at this time, studying them. I'm thinking I'm leaning to the TST 507 system but, based on some earlier reports and based on the style of wheels I have, I'm not sure their sensors will fit in the wheel holes where the valve stems are. I've still got to do some research on this before I commit.
Scott