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I'm new to the forum and don't know if I should start a new thread, but I'll try here first. l am having a similar problem with my LX470. Two separate incidents where the left front tire locked up for a short burst and scared the hell out of my wife. Here's a little background. The AHC is disconnected and the system flashes OFF constantly. The former owner had put a coilover type of shock to raise the failed hydraulic suspension and was sitting low up front. A shop here reindexed the torsion bars to raise the front end. Both incidents happened after this was done. Both times at 60 MPH and one was while turning left slightly going downhill, other going straight. Alarm goes off on dash. Brakes work fine. Comments and suggestions welcomed.
Did you also hear a few beeps? 2000 or newer? Are you sure it wasn't just VSC doing its job of keeping you out of the ditch.