LF (125kHz) to trigger TPMS?

[PyDrew]

Has anyone had any success in "manually" triggering a TPMS to send its data using a 125kHz signal? A few articles indicate that this is how TPMS testers verify the sensors:

https://www.digikey.com/en/articles/low-frequency-rfic-solutions-for-tire-pressure-monitoring-systems

I don't have any 555 timers in my IC kit so will have to wait till those get delivered to see if that is sufficient in generating the correct signal.

[Benjamin Larsson]

Hi. I have used this to get transmissions from TPMS sensors. ~5€ $5.

https://www.biltema.se/fritid/tradgard/tradgardsredskap/trycksprutor/tryckspruta-15-l-2000030676

MvH
Benjamin Larsson

[Tuatha De danaan]

I have not used it for TPMS but I have been using 125khz to trigger keyfobs to send unlock and start signals at there normal 315Mhz and (03Mhz freqs.

[Peter Ly]

Hello,

Does anyone know if the Universal U508 tool can trigger TPMS sensor for Toyota?

U508 Universal TPMS Reset Tool Auto Tire Pressure Monitor Sensor Relearn Tool US | eBay

Thanks and regards,

Peter Ly

--
You received this message because you are subscribed to the Google Groups "rtl_433" group.
To unsubscribe from this group and stop receiving emails from it, send an email to rtl_433+u...@googlegroups.com.
To view this discussion on the web, visit https://groups.google.com/d/msgid/rtl_433/de607eac-32f4-450e-8afc-70d84b0899b1n%40googlegroups.com.

[Peter Ly]

Hi Tuatha,

Which device did you use to send 125KHz? Did you make it by yourself or did you buy it?

Thanks and regards,

Peter Ly

[Benjamin Larsson]

On 2021-09-03 09:08, Peter Ly wrote:
> Hello,
>
> Does anyone know if the Universal U508 tool can trigger TPMS sensor for
> Toyota?
>
> U508 Universal TPMS Reset Tool Auto Tire Pressure Monitor Sensor Relearn
> Tool US | eBay

> <https://www.ebay.com/itm/203444630420?_trkparms=amclksrc%3DITM%26aid%3D1110006%26algo%3DHOMESPLICE.SIM%26ao%3D1%26asc%3D20201210111314%26meid%3D72c6803a87c743aea91ea7724bd0a65f%26pid%3D101195%26rk%3D3%26rkt%3D12%26sd%3D133467471215%26itm%3D203444630420%26pmt%3D1%26noa%3D0%26pg%3D2047675%26algv%3DUltimatelyBoughtOfCoviewWithSimAMLv7SameOrRelatedFilter&_trksid=p2047675.c101195.m1851&amdata=cksum%3A20344463042072c6803a87c743aea91ea7724bd0a65f%7Cenc%3AAQAGAAACMBP5sdJ2xy8hH%252F2DMsrYbUdVjfPqyJsgiwE5SMaRARQxi6Hanjy0bAD2yohoJc0isr6oN2dpLXCWmABjORwphUO3h6oJjzFpMXLrXUTmEdwmo%252B2zsSVOm0BZHgs4tFyx79aqff3pBWm6i7wAwB15PQU5hkhENZuoqNhWCQg6s4xG%252B5r2J5ZLFcrGFasvBHNX%252FWFumEdvlDaili1yZhiBl97OTGVJdSIjfZ%252FM0v4QwdDTJEqbrkxBaN9mrOggO6yIYfesi9H1Yc8ALLbE1lBWGZ1QsY9LWlKsREPMxyScCFw8be7%252Fami3ABwVmvPvHF2ujVSorXALnkFclHGfEzkioncgTysbRDBUuU6F%252FENygL1CZDe3oDIC6dAMVQbZmtyIA9jkVXA4pi00TKEReEO4Pv2zOY7MLvCLw3P2R25vgJAVJA2GcAJfE6HZkqgc6Daw4Gtw4qVEoqgRE8xLrkKMTKON%252FmWPms9EwA12FK8lHVmhUCEeQUkbpWitbX%252FCif%252B99wlGR2O%252BZUUj7Us5O57VClJuwnmSN%252FbyS7Up%252FMX3Q6JTeenKL6n0FZ4n3jqmylDKdj0tLYlPv%252BCUsYVaN55Ug1L1FDo%252BWHpYRxIVGqueJA3eAnmq881YWSZzsZehjJkpxg4fFJWNnGoauKO%252FTu7QTZBZvav5EtIox8%252FVLk2s33e1PCVjGi07h9vO8d6kFS1Q6Aw1K6WCWKgSB0N3CllwJ3yrwOhYVMI9B2buN2WK2GF5%7Campid%3APL_CLK%7Cclp%3A2047675>

>
>
> Thanks and regards,
> Peter Ly

Usually a significant change in pressure will trigger a TPMS
transmission or wheel rotation.

MvH
Benjamin Larsson