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Old 11-30-2012, 08:22 AM
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Zeichen311 Zeichen311 is offline
Lost but making good time
Location: Here, there or in transit
Join Date: Mar 2011
Posts: 3,119
Mein Auto: '11 335xi 4dr; '03 330Ci
Originally Posted by gpburdell View Post
I don't believe the system senses discrete pressure, i.e. telling the car what PSI the car is at, but more that it communicates a deviation from the set-point. I could be wrong.
It's a little of both. The sensors do transmit pressure measurements; many other manufacturers display these readings on the instrument panel (BMW has decided we don't need/want to know... ). A TPMS reset does two things: Pairs the four transmitters' unique ID codes to the car and records the current pressure readings from each corner as the target pressures. The car computes the deviations thereafter.
2011 335xi Individual 6MT - Azurite Black Metallic / Oyster & Black / Anthracite Maple + all the good stuff
2003 330Ci Sport 5MT - Black Sapphire Metallic / Natural Brown / Myrtle + the important stuff

   N47 35' 30.13" E11 10' 33.36" - End of can guess what came next. BMW CCA
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