I got a copy of the TSB through www.alldata.com - subscription is required - which lists all TSBs for this and lots of other models. I'm a new member to this forum, so don't know the policy of posting it here. I believe a dealer should share with you if you ask for a specific TSB number - see prior posts in this thread for the exact number.
From my level of understanding, Goodwill is the term Lexus uses for providing something it is not obligated to do (i.e. out of warranty) but will provide as 'goodwill' to a customer - from what I sense, decision criteria is an equation that factors: 1. how much 'goodwill' you've provided to Lexus and the service dealer in maintaining the vehicle 2. individual service dealer's committment to you as a customer 3. your personal diplomacy/negotiation skills. In an earlier issue I experienced out of warranty, I was provided parts as goodwill and paid the installation fee. I was pleased with the resolution.
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