Opis
Replacing the coil packs or spark plugs on a Sienna can be a real pain, it requires patience, the right tools and an understanding of what you're getting into. That said, it's worth buying the best components: spark plugs and coil packs, since you don't want this job to be repeated in a couple years.
CarCareNut's step by step: https://www.youtube.com/watch?v=ING-RK7NJ-c
Difficult Plenum Video: https://www.youtube.com/watch?v=urKkKH7tR24
OBD Scanner shown: https://amzn.to/3JysywO
Auto Parts: https://amzn.to/3VURJ1T
BlueDriver OBDII Scanner: https://amzn.to/3VQNtR6
Professional OBDII Scanner: https://amzn.to/3LOMA6W