Even better, look for a deal on the Autel TS508 like fibber recently bought - much better than the crude ATEQ Quickset. He found the TS508 at a similar or lower price.I will also have to look into the ATEQ tool you and others have mentioned. I do wish the Sienna's had an indirect monitoring system like my wife's CR-V. It makes things simpler, but I guess there are pros and cons with that too.
Toyota is finally equipping recent models with automatic programming of TPMS and instrument cluster displays of all pressures.
Maybe the indirect pressure sensing systems have improved. In the past, some couldn't handle minor mismatches in rotation rates unless all four tires were replaced at the same time.