larrytuttle

Just bought a used, certified, 2000 ES300 with 38,000 miles on it - with a 3 yr warranty. Very, very clean. However, after a few days of driving, I noticed a very slight vibration (through my hands on the steering wheel) that begins at about 1400 rpm and then goes completely away at above 1500 rpm. It happens only in gear, not in park or neutral. Its very slight but noticeable. Any ideas? Should I try to get this fixed under the warranty?