1. Attachments are working again! Check out this thread for more details and to report any other bugs.

2011 Prius Hybrid battery drain

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by Ken Ritter, Jul 30, 2024 at 4:52 PM.

  1. Ken Ritter

    Ken Ritter Junior Member

    Joined:
    Nov 10, 2022
    3
    0
    0
    Location:
    Enfield CT. USA
    Vehicle:
    2011 Prius
    Model:
    III
    So this car has 133000 miles. It seems I may need a replacement hybrid battery. It drains fast when I try to drive it. The gas milage was getting bad so I changed plugs, cleaned the EGR pipe and MAF sensor. Added fuel injector cleaner to the gas. That seemed to get some power back but I still think its battery time. No codes. I see several options for battery replacement . Would you go with the new one to be safe? or a rebuilt etc...?
     
    #1 Ken Ritter, Jul 30, 2024 at 4:52 PM
  2. vallesj

    vallesj Junior Member

    Joined:
    Sep 28, 2007
    70
    15
    0
    Vehicle:
    2013 Prius
    Model:
    Three
    what is considered bad for you? the hybrid battery should be fine until you get on the screen "check hybrid system". And then you got a P0A80 code, that is indications you need to work on your battery. Or you can do some preventive reconditioning with a system like the Prolong.
    what do you consider a bad MPG? I got in my 2 prius really bad MPG on summer mainly because the air conditioning working hard, its electric so it discharges the hybrid battery quickly and the engine need to compensate that by trying to keep charged the battery which at the end affects your MPG. So having a new battery will not solve the MPG on this case, the current to recharge the AC compressor battery is still needed.
     
    #2 vallesj, Jul 31, 2024 at 9:27 AM
  3. Mendel Leisk

    Mendel Leisk Senior Member

    Joined:
    Oct 17, 2010
    55,641
    38,763
    80
    Location:
    Greater Vancouver, British Columbia, Canada
    Vehicle:
    2010 Prius
    Model:
    Touring
    Maybe assess the battery first. Dr Prius app (with a bluetooth OBD adapter, Carista works well) will give you some idea where it's act. Even just the static test. (see attachment, demo mode)


    upload_2024-7-31_8-50-55.png

    ^ The pipe being this (highlighted) bit? If so, I would do the rest, including EGR valve/cooler, and intake manifold, ASAP. See top two links in my signature. (on a phone turn it landscape to see signatures)
     

    Attached Files:

    #3 Mendel Leisk, Jul 31, 2024 at 11:46 AM
    Last edited: Jul 31, 2024 at 11:53 AM
(You must log in or sign up to post here.)