TPMS works without sensors?

[06ZhP]

Occasionally I would have my TPMS lights go off for no reason. Tires dont have the sensors, but pressures would be slightly low on occasion. Yesterday I got a flat and the TPMS went off.

Does the system work without the sensors??? :dunno

[LivesNearCostco]

It uses the wheel speed sensors to guess if you have a flat. If all the wheels go flat the same amount, it probably won't notice!

[06ZhP]

^^Thanks

Just found this...

http://forum.e46fanatics.com/showthread.php?t=966153

I guess I have the RPA system. LOL news to me I always thought I needed sensors...:p