DiamondGreyGT

So: Legacy GT: 215/45R17 Legacy 2.5i: 205/50R17

Winters are stock rims and tire size for 08 GT, and summers are just stock 08 2.5i rims and tire size.

Hi guys, new poster here and overall newbie so forgive my ignorance if I ask any stupid questions. I'm having a problem with my 08 Legacy GT's dash lights, as the TC, CC (flashing) are all on, and my driving mode controller can't be used. The thing is, this problem has only happened these past two summers. During the winter, the problem goes away completely. This leads me to believe it is either the summer heat, combined with engine heat overheating something, or the fact my summer tires are off an 08 legacy 2.5i, which are a bit smaller than that of the GT. It does seem the problem came right after I switched to my summers tires and rims. Is it possible either of these could be throwing off my sensors? Thanks