TPMS Tire pressure monitoring System

Is this system wired? Unlikely, it is probably wireless and uses a radio signal. So even if the trailer is unhooked you may still be close enough to pick up the signals from the trailer tires.

Without knowing the brand of TPMS you are speaking of, it's impossible to offer any meaningful advice. However, most are not adjustable.

You've hit on an issue that should be a concern to anyone using a TPMS: is it actually reporting like it's supposed to be?

Which one did you get?
I wouldn't think it should report anything. Most MH's actually have to use a repeater to get the signal from the vehicle that's being towed.

Without knowing your brand and model, we can only generalize. If you had only one sensor your scenario could possibly exist, but when moving the sensors update the info quite frequently. If one sensor updates, the software expects all of the sensors to update. If one does not report a flag is set to notify that the sensor is missing.

agesilaus wrote:
Is this system wired? Unlikely, it is probably wireless and uses a radio signal. So even if the trailer is unhooked you may still be close enough to pick up the signals from the trailer tires.

The brand is TPMS, model 536. I drove fifty miles away. Don't think it was still picking up from the sensors.

rtate wrote:

agesilaus wrote:
Is this system wired? Unlikely, it is probably wireless and uses a radio signal. So even if the trailer is unhooked you may still be close enough to pick up the signals from the trailer tires.

The brand is TPMS, model 536. I drove fifty miles away. Don't think it was still picking up from the sensors.

Probably not....heh. We have the TPMS and I have not been too pleased with it.

EV2 wrote:
Without knowing your brand and model, we can only generalize. If you had only one sensor your scenario could possibly exist, but when moving the sensors update the info quite frequently. If one sensor updates, the software expects all of the sensors to update. If one does not report a flag is set to notify that the sensor is missing.

That should be the way they work, but not all work that way. Some have a time period of up to an hour after they fail to receive a signal before they report that loss of signal.

Unfortunately I think most TPMS operate as you're describing. If they're maintaining radio contact they are reasonably quick to inform of issues such as low pressure, overheat etc. If they loose signal, it just reports last received signal while waiting for an update. In this situation it takes about an hour for it to report a fail. If you simply get intermittent signals, with temporary reception every thirty minutes or some other value less than an hour you'll never know you have shoddy reception. I put a repeater on my TST 507 system because of this but I still don't really know if I'm getting a reasonably consistent signal or not.

Searching_Ut wrote:
Unfortunately I think most TPMS operate as you're describing. If they're maintaining radio contact they are reasonably quick to inform of issues such as low pressure, overheat etc. If they loose signal, it just reports last received signal while waiting for an update. In this situation it takes about an hour for it to report a fail. If you simply get intermittent signals, with temporary reception every thirty minutes or some other value less than an hour you'll never know you have shoddy reception. I put a repeater on my TST 507 system because of this but I still don't really know if I'm getting a reasonably consistent signal or not.

If that is the case, then what's the purpose of even having this unit? Tire blows out, and one might not know about it for an hour ?

If that is the case, then what's the purpose of even having this unit? Tire blows out, and one might not know about it for an hour ?
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That's what happened to us, we knew a tire was blown when a passing truck signaled us that there was something wrong. We have the TST system and I have lost faith in it.