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

Parking on an incline.... up or down?

Discussion in 'Gen 2 Prius Main Forum' started by eseerc, Aug 20, 2012.

  1. eseerc

    eseerc Junior Member

    Joined:
    Mar 21, 2012
    53
    10
    0
    Location:
    Central PA
    Vehicle:
    2010 Prius
    Model:
    II
    Hi All

    This is my first visit to the new site, everything looks awesome! Now, for a (probably) dumb question. I park on a street graded slightly. Is it best for me to park on the incline or on the decline (I can park on my street in either direction). I was not sure if one of the ways was better for the vehicle.

    Thank you!
     
  2. ETC(SS)

    ETC(SS) The OTHER One Percenter.....

    Joined:
    Oct 28, 2010
    7,765
    6,573
    0
    Location:
    Redneck Riviera (Gulf South)
    Vehicle:
    Other Non-Hybrid
    Model:
    N/A
    I would park nose out, or with the vehicle pointed with the flow of traffic. Most cities require this for a reason.

    FWIW your car probably doesn't care if it's got its butt or nose in the air, and I can't really see where it's going to make much of a difference:

    Here's a squib from the California Driver Handbook.
    The people there may not know how to drive worth a crap (been there, done that) but their handbook is OK....
    Parking On A Hill

    When you park:
    • On a sloping driveway, turn the wheels so the vehicle will not roll into the street if the brakes fail.
    • Headed downhill, turn your front wheels into the curb or toward the side of the road. Set the parking brake.
    • Headed uphill, turn your front wheels away from the curb and let your vehicle roll back a few inches. The wheel should gently touch the curb. Set the parking brake.
    • Headed either uphill or downhill when there is no curb, turn the wheels so the vehicle will roll away from the center of the road if the brakes fail.
    Always set your parking brake and leave the vehicle in gear or in the "park" position.


    Good Luck!
     
  3. eseerc

    eseerc Junior Member

    Joined:
    Mar 21, 2012
    53
    10
    0
    Location:
    Central PA
    Vehicle:
    2010 Prius
    Model:
    II
    Thanks for the info. I was asking from more of a mechanical aspect for the Prius (brakes, transmission??) if it matters which direction I park. My street is extremely low traffic (3-4 cars per day pass) which allows me to park in either direction.
     
  4. Patrick Wong

    Patrick Wong DIY Enthusiast

    Joined:
    Mar 8, 2008
    18,200
    6,479
    0
    Location:
    Green Valley, AZ
    Vehicle:
    2015 Prius
    Model:
    Two
    It does not matter to the car which way you park. I suggest that you set the parking brake firmly, to reduce stress on the transaxle parking pawl.

    If you experience heavy rainfall in your area, you may find that the rear hatch area will have a greater tendency to leak if the car is pointing downhill, if the slope is sufficient so that water cannot easily flow out of the hatch area.
     
  5. eseerc

    eseerc Junior Member

    Joined:
    Mar 21, 2012
    53
    10
    0
    Location:
    Central PA
    Vehicle:
    2010 Prius
    Model:
    II
    Thank you for the info!
     
  6. uart

    uart Senior Member

    Joined:
    Sep 7, 2009
    4,215
    1,201
    0
    Location:
    Australia
    Vehicle:
    2005 Prius
    Honestly on a slight incline I cant see it making any difference, so just point with the flow of traffic.

    I'm not sure whether or not the following is region specific*, but on a steep incline the park-brake on my Prius works heaps better in the forward direction than the reverse. So, if I had a choice, on a very steep incline I'd prefer to park pointing downhill.

    * Brakes on Australian and UK models are front/rear disc, with auxiliary drum on rear for park-brake only. So results may be different for other models.
     
  7. eseerc

    eseerc Junior Member

    Joined:
    Mar 21, 2012
    53
    10
    0
    Location:
    Central PA
    Vehicle:
    2010 Prius
    Model:
    II
    I am guessing my street is between a 10-20% grade. I have noticed the same thing Uart. When pointed uphill, the vehicle seems to make a lot of "creeking" noises as I exit the vehicle.
     
  8. uart

    uart Senior Member

    Joined:
    Sep 7, 2009
    4,215
    1,201
    0
    Location:
    Australia
    Vehicle:
    2005 Prius
    Hi reece. For some reason the "grade" of a hill is something that most people tend to over-estimate. Anything over 10% is actually fairly steep, and 20% is very steep. The very steepest hills in San Francisco, renowned for it's very steep areas, are in the high 20's (percent). See : The Steeps Of San Francisco – In Search Of The City's Steepest Street
     
  9. Patrick Wong

    Patrick Wong DIY Enthusiast

    Joined:
    Mar 8, 2008
    18,200
    6,479
    0
    Location:
    Green Valley, AZ
    Vehicle:
    2015 Prius
    Model:
    Two
    Probably because the parking brake pedal was not pushed hard enough and the parking brake is not holding tightly. I suggest you apply your full body weight on the pedal, then see if you hear creaking sounds.
     
  10. Agent J

    Agent J Hypoliterian

    Joined:
    Apr 27, 2010
    294
    111
    0
    Location:
    Sydney, Australia
    Vehicle:
    2007 Prius
    Model:
    N/A
    if you're goal is mpg gains, park the car pointing downhill so that in the morning, gravity will help move the car forward and not use up much of the HV battery for propulsion during stage 1 of the operating mode. if the gradient is high and long enough, you can even charge the HV battery from that and get into stage 2 at the bottom of the hill. :)