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two questions...........

Discussion in 'Gen 2 Prius Technical Discussion' started by taggart, May 9, 2008.

  1. taggart

    taggart Member

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    I apologize ahead of time if this is repetitve. I couldn't find answers after searching.

    1) What is that little disc on the driver's side front bumper?
    2) Is there a recommended maximum speed for using the engine brake?
     
  2. richard schumacher

    richard schumacher shortbus driver

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    1) The towing ring that came with the Prius (probably the dealer left it in the glove box or the center console) screws in behind the disk. Be sure to read all the warnings in your owner's manual about towing a Prius.
    2) No. But note that "B" is meant to be used only when coming down a very long slope, to avoid riding the brake hard. "B" reduces fuel economy and so should not be used in normal driving. For example there's no place in Dallas or Houston where "B" is ever needed.
     
  3. taggart

    taggart Member

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    Thanks, Richard.

    I'll have to locate the towing ring. I haven't seen it. Maybe it's in the rear storage compartment. I'll also take a look at the manual.
     
  4. rigormortis

    rigormortis Active Member

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    i read somewhere that someone actually measured kansas and it is indeed flatter then a pancake, so that would be a good place that would not need engine braking either
     
  5. lenjack

    lenjack Active Member

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    Mine was in the storage compartment. As for the "B", if they left itout, none of us would have missed it. the vast majority of us will have no use for it.
     
  6. dogfriend

    dogfriend Human - Animal Hybrid

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    My tow ring is stored in the plastic tray under the cargo floor. The handle for the jack is stored next to it.

    I have actually used "B" mode a few times:

    Going down the grade from Lyons Creek Trailhead to US 50. The road is Wrights Lake Road and it descends from 6800 ft above sea level to 5200 ft in about 2 miles. The road is only a little wider than one lane and there are no guard rails to prevent you from falling down into the American River if you miss a turn. I marked the top and bottom on this map:

    [​IMG]


    I have also used B mode on Pacheco Pass (Hwy 152) near San Luis Reservoir and on I-5 in Southern Oregon.

    You can shift into or out of B mode at any speed.
     

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  7. jdchappie

    jdchappie JD on RR2

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    Hey rigormortis, Kansas isn't quite as flat as a pancake (except by Dodge City and the southwest area) LOL. The best use I found for the "B" is when a cop is following me in a 30mph zone on a slight down hill road. My Prius will constantly gain one or two mph. Can't touch the brake to slow down. My foot isn't near the gas pedal. Tap it into "B" and keep it on the speed limit with the gas. Try to explain speeding without touching the gas pedal ??? Jerry
     
  8. berinker

    berinker New Member

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    'B' (for engine braking) can be used for any
    braking help by using the engine compression
    as well as the generator especially in high-speed
    or distant braking and will save the wear and
    tear on your brakes and will cost you nothing
    in mileage. Better to slow down and use the
    generator braking all the way if you can.
    But be sure to switch it back to drive
    after you are though braking or
    the engine braking during
    normal operation will
    cost you mileage.
    Bud
    you
     
  9. richard schumacher

    richard schumacher shortbus driver

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    Why?
     
  10. jdchappie

    jdchappie JD on RR2

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    Richard, the policeman will know I'm speeding and wonder why I have to keep tapping the brake to slow down. There's about a dozen Prius in this area so the average person has little knowledge of the technology involved. I educate anyone who will stand still long enough but the silly questions keep coming. "Do you have to plug it in? , Is it running?" I think the police should consider the Prius but I know the American brand is locked in by dealer influence and bid specifications. Perhaps the price of gas will modify the process and they will be more responsible with our tax dollars. Crown Victorias rule in the police world. Jerry
     
  11. Jiipa

    Jiipa MGySgt USMC (Ret)

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  12. jdchappie

    jdchappie JD on RR2

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    He and all the conventional cars can adjust speed with the gas pedal while I have to use "B" to slow down the Prius. Otherwise, I look like I'm 80 years old riding the brake with my left foot. In the Ozarks where efusco lives I like to run down the hills on 65 highway. The Prius is a rocket going downhill. My Durango doesn't accelerate as fast with a neutral gas pedal. More fun in the Prius. Jerry
     
  13. rpiereck

    rpiereck Regenerator

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    I had plenty of chances to use the B mode driving from California to Virginia, but none of those chances were in Kansas, which is all low rolling hills.
     
  14. richard schumacher

    richard schumacher shortbus driver

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    Precisely. The cop doesn't need to see flashing brake lights to know whether you're speeding. Indeed, if you use "B" and slow down suddenly the cop might stop you because he thinks your brake lights are not working :_>