Parking on a slope Driveway - Makes a thud noise when shift to Drive or reverse gear

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by Mushtaq M, May 10, 2021.

  1. Mushtaq M

    Mushtaq M New Member

    Joined:
    May 10, 2021
    2
    1
    0
    Location:
    Glasgow
    Vehicle:
    2011 Prius
    Model:
    Active
    I park my Prius on my slope driveway . Every morning when i start my prius and change the gear to Drive mode or reverse it makes a audible thud noise. But changing from park to drive on level roads any where on a level area is alway smooth suggesting there is no issue with my CVT Transmission and the slope may be causing a problem.

    Is there a problem in parking on a steep driveway for example what worries me is the CVT Transmission fluid is not level on a slope and could be causing a rough shift in mode?
     
  2. Grit

    Grit Senior Member

    Joined:
    Aug 22, 2017
    5,302
    3,740
    1
    Location:
    Wilkes Land
    Vehicle:
    2012 Prius
    Model:
    Four
    do you engage parking brakes parked on the slope?
     
    #2 Grit, May 10, 2021
    Last edited: May 10, 2021
  3. ASRDogman

    ASRDogman Senior Member

    Joined:
    May 29, 2018
    3,817
    2,270
    0
    Location:
    Florida
    Vehicle:
    2010 Prius
    Model:
    Two
    If you put it in neutral, set the parking brake, release the foot brake, then press the "P",
    you might not get that. "if" it is the transmission.
     
    Mushtaq M likes this.
  4. Mdv55

    Mdv55 Active Member

    Joined:
    Dec 25, 2018
    215
    155
    0
    Location:
    Boston
    Vehicle:
    2011 Prius
    Model:
    Three
    Probably the weight of the car resting on the parking pawl.
     
  5. bisco

    bisco cookie crumbler

    Joined:
    May 11, 2005
    95,336
    43,218
    0
    Location:
    boston
    Vehicle:
    2012 Prius Plug-in
    Model:
    Plug-in Base
    have you checked the fluid level?
     
  6. sLick415

    sLick415 Member

    Joined:
    Apr 30, 2012
    214
    55
    0
    Location:
    San Francisco, CA
    Vehicle:
    2012 Prius
    Model:
    Three
    Do you put it in park, release foot brake, and then set the parking brake? In that order?
     
  7. sam spade 2

    sam spade 2 Senior Member

    Joined:
    Mar 31, 2018
    5,950
    2,359
    0
    Location:
    USA
    Vehicle:
    2017 Prius c
    Model:
    Four
    Probably. But that is the wrong order.
     
    sLick415 likes this.
  8. AW82

    AW82 Member

    Joined:
    Mar 22, 2021
    180
    90
    0
    Location:
    Madison, WI
    Vehicle:
    2012 Prius
    Model:
    Two
    This. Happens on just about every automatic transmission when parked on a slope without the hand/foot/emergency/whatever brake applied. I think far fewer people would experience this if automakers either went back to hand brakes or electric parking brakes that activate anytime the transmission is shifted to park. I rarely use the foot brake on either of our cars (unless parked on a slope) because "the other person" that drives these cars has a really hard time remembering to release it. It's almost like there isn't a big red light on the dashboard...
     
    Samuel Williams Jr likes this.
  9. Mendel Leisk

    Mendel Leisk Sand Pounder

    Joined:
    Oct 17, 2010
    46,026
    32,866
    80
    Location:
    Greater Vancouver, British Columbia, Canada
    Vehicle:
    2010 Prius
    Model:
    Touring
    More like a wee red icon. I recall lamenting the lack of warning, years after getting our 2010, and someone here pointed out there IS an alert, albeit easily overlooked. I’ve got a vague recollection it beeps too, or is that a false memory?
     
  10. AW82

    AW82 Member

    Joined:
    Mar 22, 2021
    180
    90
    0
    Location:
    Madison, WI
    Vehicle:
    2012 Prius
    Model:
    Two
    Well, I was talking in general. I've not seen her do it in the Prius more than once, but our Honda has a fairly noticeable light and definitely beeps. She notices when the Honda starts beeping, but that's usually after 5-10 seconds of flooring it trying to get the car to accelerate.
     
    Mendel Leisk likes this.
  11. Grit

    Grit Senior Member

    Joined:
    Aug 22, 2017
    5,302
    3,740
    1
    Location:
    Wilkes Land
    Vehicle:
    2012 Prius
    Model:
    Four
    add “tire shop employees” on to the list also. They drove my vehicle with parking brakes half engaged, it was like nails scratching on chalkboard. The red BRAKE led was lit on the dash, but dash lights are only suggestions.
     
  12. privilege

    privilege Active Member

    Joined:
    Mar 17, 2021
    588
    148
    0
    Location:
    Birmingham
    Vehicle:
    2011 Prius
    Model:
    Three
    once you watch a few YouTube videos of "how parking pawls work" you'll understand why the parking brake is there, and when to use it
     
  13. Grit

    Grit Senior Member

    Joined:
    Aug 22, 2017
    5,302
    3,740
    1
    Location:
    Wilkes Land
    Vehicle:
    2012 Prius
    Model:
    Four
    no way, sum it up for us in one sentence. we can’t stray off of netflix.
     
    Samuel Williams Jr and privilege like this.
  14. bisco

    bisco cookie crumbler

    Joined:
    May 11, 2005
    95,336
    43,218
    0
    Location:
    boston
    Vehicle:
    2012 Prius Plug-in
    Model:
    Plug-in Base
    don't park on slope
     
  15. Mdv55

    Mdv55 Active Member

    Joined:
    Dec 25, 2018
    215
    155
    0
    Location:
    Boston
    Vehicle:
    2011 Prius
    Model:
    Three
    You use cheaper parts to bear the weight of the car instead of increasing wear on expensive ones...
     
    Grit likes this.
  16. AW82

    AW82 Member

    Joined:
    Mar 22, 2021
    180
    90
    0
    Location:
    Madison, WI
    Vehicle:
    2012 Prius
    Model:
    Two
    Apparently those of us that take 3 seconds to scan the instrument cluster and check mirrors after starting the engine but before putting the car in gear are uncommon.
     
    Samuel Williams Jr and bisco like this.
  17. Mendel Leisk

    Mendel Leisk Sand Pounder

    Joined:
    Oct 17, 2010
    46,026
    32,866
    80
    Location:
    Greater Vancouver, British Columbia, Canada
    Vehicle:
    2010 Prius
    Model:
    Touring
    Traditional handbrake lever in centre console is harder to miss?
     
    Grit and AW82 like this.
  18. Kramah313

    Kramah313 Active Member

    Joined:
    Oct 3, 2015
    391
    312
    0
    Location:
    Dallas, TX
    Vehicle:
    2012 Prius
    Model:
    Four
    This happens with basically every auto transmission car I’ve ever driven. It seems to help if I apply the parking brake to hold the car in place while changing gears - put it on before shifting to P and wait until after shifting out of P to take it off.
     
    privilege likes this.
  19. Grit

    Grit Senior Member

    Joined:
    Aug 22, 2017
    5,302
    3,740
    1
    Location:
    Wilkes Land
    Vehicle:
    2012 Prius
    Model:
    Four
    Everyone should be using parking brakes even when parked in flat terrain. Imagine if your parked car gets hit directly in the back or front, the parking paw restricted the car from moving back or forward. With out parking brake on, your transmission could go kaput.
     
  20. sam spade 2

    sam spade 2 Senior Member

    Joined:
    Mar 31, 2018
    5,950
    2,359
    0
    Location:
    USA
    Vehicle:
    2017 Prius c
    Model:
    Four
    Not sure that makes any sense.
    The parking pawl works kind of like sticking a broom stick into the spokes of a bicycle.
    If you try to move it, something breaks.
     
Loading...