Flat tire light is on but no flat tire
SOURCE: Flat Tire Monitor
well it could be a slow leak in your tire however it can also be because of the temperature change.I have seen many of times that tpms lights have come on and only 1 tire would be low.It only takes aproximately 3 pounds of difference in tire pressure to set the light on.You may also check your spare tire also they have sensors too.
SOURCE: run flat tyre warning light is on i have checked tyre pressure
This will only come on when a tyre has dropped in pressure (not spare). It work on the principle that a tyre with less air has a smaller rolling circumference and therefore a different wheel speed. This is then monitored against other signals from other wheels and determined that a loss in pressure has occured.
If all tyre pressures seem ok, there could be a chance of a small unoticeable leak and would require a bath test. This is when the tyre is dipped in water and bubbles would appear where the puncture is.
Ultimately the system may just need to be reset, or has incorrectly been reset from a tyre change. For this you just press and hold the TPC button (located on the centre console above the gearstick - looks like a flat tyre with an exclamation) turn on the ignition to position 2 and the light will come on re then yellow,go out, come back on yellow. When it comes back on yellow it re-initializing the system. You can let go of the button and after 20 odd seconds the light will go out for the final time, completing the reset.
If the light continues to come on after the reset then you definitely have a puncture somewhere!
Hope this helps!
SOURCE: BMW 320D,2006- run flat tyre warning light is on. How do I reset?
Using the indicator stalk, navigate to the tyre pressure reset option, press the reset button twice in short succession but hold it in the second time until a tick appears on the display
SOURCE: how do i reset the flat tire light on the dash aft...
After you have changed a tire and adjusted your tire pressures you will need to initial the tire pressure monitoring. If your vehicle does not have I-drive then with the iginition in the on position on the left steering wheel stalk, move the rocker switch up and cycle through until you see an icon in the cluster that says initailize. push the button on the end of the stalk inwards toward the steering wheel and hold until you see the icon in the cluster show a check mark. When it shows a check mark your finished.
SOURCE: how do you turn off the tire pressure synsor?
BMW sensor on your air pressure, in fact, no! information about whether there is pressure or not the calculated DSC computer from signal ther you give sensors ad the ABS. function is quite simple. ABS sensors constantly monitor how the wheel rotates and each DSC unit calculates the signal and recognize the differences in wheel rotation. When the pressure is not air physically rotated more than a round where the air pressure is due to changes in area of circumference empty rounds that diminishes and puffy round is larger in ! Security systems from BMW are really so perfect that even a slight difference in rotating do to reveal! Reset can be found in your board computer and no need special types and tricks it in the car seting menu. This is standart function
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