I bought a used 2007 ES 350. Great car, but the front wheels hop under medium accelaration on rainy days, even if it's just a drizzle. So, how can I tell if VSC is on? There's lot's of discussions about a pedal dance to turn it off, but how do I turn it on. And how do I know if it's on once I follow whatever procedure I need to do. The light comes on at start up for a few seconds like it's supposed to, then it goes out like it supposed to. And when I accelerate I get wheel hop instead of traction resulting in quite a shudder in the front end, but the VSC light doesn't light up. Also, not sure if this is related or not, but I had the car into the body shop to repair a scratch on the front driver's fender. When I got the car back the AFS (headlight aiming) light was on. I brought it back and they said they forgot to connect something. So they fixed that. But is there something else near/under that fender that they could have messed with that would cause my traction/stability control to be messed up?