Originally Posted by Bucko

In my 2011 Mustang, the TPMS triggers with as little as 3 pounds low.

An option for you to do away with this feature (if you must) is to install a pre-2008 cluster. You can get the mileage flashed on the replacement pre-2008 cluster to match your current clusters odometer. Then you'd be good to go.

Or, remove the cluster you have (easy to do):

1) Remove the bottom panel (below steering column) to gain access to the two screws that let you remove the upper cluster dash cover.
2) Remove these screws, then tilt the steering column as low as you can, then pull out the side clips of this cover, then straight back.
3) Remove the two top wiring harnesses by sliding the locking clip to the right (or left) depending on the left/right harness, then pull off.
4) Remove the 4 screws that hold the cluster in place, lift up, and if you have a column shift, pinch the gear selector dial locking tabs in the bottom center of the cluster, now remove the cluster.

Remove the clear cover, then place the piece of black tap over the annoying (to you) light. Reassemble.