First of all, repost.
Second:
<<she took the Sienna back to Kendall for service because the oil indicator light stayed illuminated.>>
RED FLAG! She drove the car WITH THE OIL LIGHT ON! It's a NO PRESSURE warning light, not a low pressure warning light. Any idiot should know that when the oil light comes on you put the tranny in neutral and shut the engine off NOW! I said it in the last thread and I'll say it again, it's not Toyota's fault that idiots don't maintain their vehicles. I hate seeing machinery abused like that, it's like the people who use their keyboards as placemats and collecting trays for crumbs, then complain becuase the keyboard doesn't last. IMO anyone who doesn't change the oil every 3,000 miles is taking unnecessary risks. Also, what's the big deal with 260 degree cylinder head temperatures? That's nothing. Old aircooled VW and Porsche engines will run 250-270 degrees on the heads all day. Big freakin' deal.
So, to answer your question with a question; why is it that people aren't smart enough to keep their machines in proper repair?
ZV
EDIT: <<Alemany said she showed her dealer oil change receipts from Jiffy Lube showing that she had changed the oil in the Sienna regularly.>>
OK, first of all 4,000 to 6,000 miles is NOT regularly. Second, Jiffy Lube is not exactly a high quality service station. Any place that recommends PTFE oil additives is suffering from anal-cranial inversion. Technically though she did hold up that part of the bargain though since Toyota says 7,500 miles (bullsh!t if you want the car to last past 100,000 miles, but that's another rant). Still, anyone stupid enough to drive with the oil light on has to be making other brain-dead decisions in maintenance.