Step One:Remove side panel. Leave tire and wheel well in place.
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Step Two: Remove Battery
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Step Three: Remove battery platform. Only 4 bolts and allows unfettered access to frame/sensor.
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Nasty under the sensor.
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Step four: All cleaned up. Dielectric grease added and re-attached sensor next.
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Success! First time my idiot light screen has looked like this.
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To clear the code required the use of a stop watch. Counting was not precise enough for this system. Have jumper wire from K pin to ground on the seat frame when you turn key to acc. Hit the start button on your stop watch and remove wire from ground THE INSTANT the INFL REST light blinks on dash. Watch the timer and reapply ground wire when it hits 3 sec, and pull off when it hits 6 sec. Done.
My guess is the difficulty everyone has with this step is the level of timing the system is demanding. Get the time right and its easy. Maybe this will help some people in the future. It was a fun job to do.
TIPS: Use a torx bit in a socket driver to remove two small torx screws inside bottom of wheel well. This avoids having to jack car and remove wheel. These two screws attached to the side skirt, which you will need to be able to flex out of the way to access a bolt on the bottom of the side panel.
Solid copper wire for jumper is great as it will stay in pin K location freeing up your hands.