I spoke to the local Toyota dealer, and I understand that they can work on just about anything on my 2000 ES300 except anything related to the Engine Warning lights. They say they have the resources to handle those issues too, but I learnt that under some kind of "agreement" with Lexus, only the higher-priced Lexus dealership service departments are allowed to work on matters related to those warning lights.
Any good reason for that, or just another Lexus annoyance?