Tyre pressure sensor lost (all) after RF transmit

[chtucker]

I was driving down the road intermittently transmitting on 155MHz or so on a portable transceiver at 5 watts. First time doing this. I am troubleshooting something at work.


While transmitting, I lost all sensors.

Anyone seen this before? Has never happened before on anything else I have driven with TPMS.

 

[Dschubba]

I was driving down the road intermittently transmitting on 155MHz or so on a portable transceiver at 5 watts. First time doing this. I am troubleshooting something at work.


While transmitting, I lost all sensors.

Anyone seen this before? Has never happened before on anything else I have driven with TPMS.

Seems they are temperamental. I haven’t lost them while transmitting yet, but you may have just been unluckily with a harmonic or something getting into the 433meg Tpms.
Mine just failed for no apparent reason.
Best I could find was leave it overnight and it gradually sorts itself out once you start driving the next day, which mine did.
Sean

 

[Julian]

I was driving down the road intermittently transmitting on 155MHz or so on a portable transceiver at 5 watts. First time doing this. I am troubleshooting something at work.


While transmitting, I lost all sensors.

Anyone seen this before? Has never happened before on anything else I have driven with TPMS.

Hi chtucker,
I have just had this happen this evening not long after transmitting on a frequency of 145.025MHz with 5W through an antenna mounted on the roof side bars. I've used a radio in the Grenadier for quite some time and I've also used 100W transmit power on HF frequencies without issue.
Did your problem resolve itself without you doing anything ? I will check in the morning to see if the problem persists.
Many thanks
Julian GM7MTK

 

[chtucker]

Yes, shutdown and restart the next day and everything came back to normal.

 

[Julian]

Yes, shutdown and restart the next day and everything came back to normal.

Thank you, I will check tomorrow and report back

 

[Blackwolf]

Mine have also dropped out - reason unknown but probably RFI - and sorted themselves out by the following morning. Note that you may have to drive a short distance before they sort theselves out, so don't be dismayed if when you jump in and start up they are still 'missing'.

 

[Skydance]

Mine did the same when I hit a pothole. Following morning I checked the tyre pressures to 36psi. Reset on vehicle settings and it went away.

 

[Julian]

16 hours later after being parked overnight, the error message remains. No radio transmissions have been made since the error first appeared. If or when the error disappears I'll post that here.
Thanks for your comments and suggestions above

 

[Green Gren]

I lost all my TPMS on the last day of Moab in October and it took three days and they randomly kicked back on the second day driving home. Maybe something interfered with the signal with the amount of people transmitting over radio in Moab and it sorted itself once I was away from so much radio traffic. Hasn’t happened since. Just a guess, but just as plausible as any I suppose.