Gen5 Prius -- EGR cleaning required?

Discussion in 'Gen 5 Prius Care, Maintenance and Troubleshooting' started by batterybro, Jul 3, 2026 at 10:04 PM.

  1. batterybro

    batterybro New Member

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    2026 Prius Plug-in
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    SE
    Is EGR cleaning required periodically in the Gen5 Prius?

    Is walnut blasting required for Gen5 Priuses?

    What other lesser-known maintenance items over 150k+ (preferably 250k+) miles of usage appear on Gen5 Priuses?
     
    #1 batterybro, Jul 3, 2026 at 10:04 PM
  2. bisco

    bisco cookie crumbler

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    shouldn't be, it wasn't on gen 4. it was really just a poor design/engineering choice that toyota finally corrected
     
    #2 bisco, Jul 4, 2026 at 2:08 PM
  3. Mendel Leisk

    Mendel Leisk MMX GEN III

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    Gen 3 EGR was poor and evidently untested, more's the shame. Gen 3 owners ended up being the testers, and Gen 4 revisions were the outcome.

    Wouldn't hurt to pull the throttle body though, see what's lurking beneath. If it looks like a black/shiny mirror (oil pool, courtesy of PCV circuit), further investigation might be in order, and an oil catch can might be useful.
     
    #3 Mendel Leisk, Jul 4, 2026 at 2:36 PM
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