I purchased a 2007 last week. I began with the Costco and Sam's Club referral programs which really only get you to the fleet departments. Both supposedly had guaranteed pricing of $3000 over invoice, but I ended up negotiation by phone a final price of $1500 over with no "frills" added on. I think that they key is to stick with phone negotiatons and avoid personal visits to the dealerships until you have settled on a final price.
Don. I haven't tried this yet on new 400h, but on previous cars the bell/gong is nothing more than a module that unplugs, typically under the instruments. It's similar to a turn signal relay on most cars.
I would like to change the Lexus Personalized Settings in my 2007 RX400h from time to time without paying the dealer (the first time is free). Has anyone found a way?