The three lights are on...after suspension lift and 315/70R17. This happened pretty quickly but now I'm too far from my mechanic to have him fix it. 80 miles away. I have read that this requires a "zero point calibration" to clear. I have found instructions to do this for 4runners and other Lexus models. Any one do this on their GX yet? My car is going in for airbag controller recall anyway...so maybe I'll just have the dealer do the calibration assuming they don't charge me an arm and a leg.