Unable to engage Maintenance mode

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by Kal Of The Rathi, Jul 4, 2018.

  1. Kal Of The Rathi

    Kal Of The Rathi Junior Member

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    I have no less than six different posts, YouTube videos all explaining how to put my 2008 Prius into maintenance mode. I just changed the oil/filter on the ICE, changed the tranny oil, and updated the coolant. But, maintenance mode evades me.

    I have tried it without fob inserted. And with the fob in the dash. Both ways.

    WTH am I doing wrong?
     
  2. Mendel Leisk

    Mendel Leisk Sand Pounder

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    Why do you need maintenance mode, to check for leaks? If so, I would fugedaboutit, just make sure all drain bolts are torqued, you've put in the proscribed quantities, done.

    If you're still wanting to do it: are you pressing the brake pedal when shifting out of Park, that's a requirement, and often not noted in the instruction.
     
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  3. Kal Of The Rathi

    Kal Of The Rathi Junior Member

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    No, nobody said anything about it. I will try it.

    You are also probably right in that it isn't worth doing now. I have no leaks. But the 'mode' was suggested several times yet I wasn't able to activate it. I'll see if I'm up to it later. Thanks.
     
  4. Raytheeagle

    Raytheeagle Senior Member

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    Probably just to ensure all loops are full.

    Run it for short cycles and check the levels. Add as needed.
     
  5. Patrick Wong

    Patrick Wong DIY Enthusiast

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    Regarding the engine coolant change, I suggest you set the cabin temp to MAX HEAT, turn on the fan to high speed, rev up the engine to 3,000 RPM and make sure that the cabin heater produces heat and does not produce the sound of air bubbling in the heater core. If the heater does not produce heat or you hear air bubbling, keep revving the engine for 10-15 minutes or until the air bubbling stops. Make sure the radiator and the overflow reservoir is full, after the engine cools down.

    If you drained the coolant heat recovery system canister, I hope that you ran the CHRS pump manually several times, to help fill the canister.
     
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  6. dolj

    dolj Senior Member

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    Probably not mentioned because it goes without saying that to shift out of park to another gear, you must have the brake pedal pressed. If one blindly follows instructions without thinking (and I include myself in this), it would be helpful for a note to remind one to have their foot on the brake at that step.
     
  7. Kal Of The Rathi

    Kal Of The Rathi Junior Member

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    Hitting the brake solved it. In hindsight, so accurate, it won't disengage Park without a foot on the brake pedal.

    Also, at the end of the list the engine doesn't start until you hit IGN-On with the brake ON for one last time. Idles fine.

    Mystery solved.
     
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