[RKDinOKC]

Can you use the dash computer to go look at the tires pressure/sizes?

My 90 928GT had a PDK, Tire Pressure Monitor. It would tell you when the tire got to 30 psi when the set pressure was 36. It would error and have problems even when set with the Porsche tool. The only thing that worked reliably was to put the minimum pressure in the tires, drive around the block. Put the maximum pressure in the tires, drive around the block. Then bleed the tires down to the correct pressure. It was 30 drive, 42 drive, bleed to 36. It was the procedure recommended in the Owner's Manual. That routine was setting the sensors in each wheel not the computer part. When set that way it worked wonderfully and never gave an erroneous low pressure warning.

Saved me a couple of times when a tire got down to 30psi and I found a nail in it. 30psi gave me time to make it to a tire shop to get the nail removed and hole plugged.

I would read the owner's manual about the tire pressure monitor to see what it says to do. It may have some procedure to reset the wheel sensors like the 928 did.