These guys are great! Stefan, got me on in Friday, even though they were fully booked, because we only had one car. I had flashing engine light with Trac off and VSC. Lights steady. Stefan knew right away what could be wrong; took my car in, had diagnostic done, and what he suspected was right on: one ignition coil was bad, replaced all th plugs. Upon further inspection underneath, he noticed some old oil leaks. Had the engine steamed cleaned and put dye in to see where leak was coming from. No leaks found, but suggested I break my Lexus in after 200 or so miles to check for leaks again, this was already included in the cost estimate. The estimate and actual were spot on.