BrewDay09
Member
The activation tool was not necessary for my TPMS install. The activation was done through the dash on the TPMS screen by letting some air out of each tire one at a time as instructed. The horn honks when it recognizes which tire has lost air.No, the TPMS trailer wiring kits come with 4 sensors in the kit (LC3Z1A189A or B, for example). I think the system is capable of up to triple axle trailers, but you'd have to buy 2 more sensors in that case.
I did not get an activation tool with the kit though. I was planning to bring them to a shop to have them installed and I figured they could activate.
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