Updated OEM 4th gen Block Heater installed with metrics

Discussion in 'Gen 4 Prius Care, Maintenance and Troubleshooting' started by BJFons, Nov 29, 2017.

  1. BJFons

    BJFons Junior Member

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    I received the new updated Toyota OEM part number PU140-00913-1 electric block heater for the 4th gen and finally got it installed. Here are some of the initial metrics on how it can help with fuel economy.

    At an ambient garage temp of 40 degrees, the EBH will elevate water temp to 89 degrees after 1 hour, 101 degrees at 2 hours and 110 degrees at 3 hours and then nothing more beyond that. With that boost, it takes only 3 minutes of driving to get to operating temp of 150 degrees and gives you instant EV mode as well. Prior to the EBH it would take 12-15 minutes of driving to get up to 150 degrees, no EV at all and during that time you are not in full hybrid mode.

    Since install and with outside temps of about 50, I got 81.9, 87.2 and 84.3 while before the install I struggled to get 80 mpg.
     
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  2. Mendel Leisk

    Mendel Leisk Sidewalk Supervisor

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    My seat-of-pants observations with 3rd gen are similar: I'd typically aim for 2 hours use, and with ScanGauge was seeing coolant temps 20~25C above ambient. Within a minute or two of start-up it seems to jump fast too, as things get more homogenized?
     
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  3. BJFons

    BJFons Junior Member

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    Yup Mendel, very similar metrics to the 2nd and 3rd gen with the exception that the 2nd was easy to install on a jack, the 3rd from a jack or lift and from the top and the 4th even harder than the 3rd.
    Recommend to have it factory install which is hard to do in the US but should be easier in Canada.
     
  4. Mendel Leisk

    Mendel Leisk Sidewalk Supervisor

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    Maybe they factory-install for prairie market? I had to get it installed, by dealership at time of car purchase, payed through the nose too. :rolleyes:

    So did you install yourself? Take wipers off??
     
  5. BJFons

    BJFons Junior Member

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    No, our installers had issue with some obstructions preventing them from pushing the unit in. Two local dealers refused to install but a dealer about 60 miles away agreed to give it a shot. It took them almost 2 hours to install because they had never done one for a 4th gen. The had to remove upper cowling and lower shields to have access from top and bottom. Placed the unit near the block and pushed it in from the top.
    I had the plug placed near the driver's wiper as to to mess with the shutter system. After install, the dealer said an install would be 1-1.5 hour job, so about $200 and we sell the EBH for $45 through D$W. Our D$W installers are looking at modifying the $35 install donation they've previously asked for. So $220-$250 at a dealer, probably half that price to our D$W members.
     
  6. Mendel Leisk

    Mendel Leisk Sidewalk Supervisor

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    I wonder if the shutter could be slightly clipped at a corner, to run the cord through. Of course then if you tuck back through the grill to be out of the way while driving, it might still foul. Hmm.
     
  7. BJFons

    BJFons Junior Member

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    We've have been installing plugs near the windshield for many years, even before the shutter system because it keeps the plug cleaner and is easier to plug in and is easier to see to make sure you unplug before leaving. We also recommend the use of a timer for a 2-3 hour period prior to leaving.
     
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