learned of this device to replace original tire pressure warning:
https://www.banggood.com/IMars-T240-...QaAmdDEALw_wcB
it replaces the original and is way cheaper.
got it and am working on the instructions on how to install it.
there are several variations with differences in small details and instructions may not match. eventually learned how to replace the battery. but learned that they come with the battery already installed. instructions dont tell that batteries are included, so when i ordered it i also ordered batteries. but you dont need to do so.