Boot (Trunk, Cargo area) struts very stiff if door left open.

Discussion in 'Gen 4 Prius Main Forum' started by alanclarkeau, Jan 10, 2017.

  1. alanclarkeau

    alanclarkeau Senior Member

    Joined:
    Feb 24, 2016
    5,539
    6,158
    0
    Location:
    near Brisbane, Australia
    Vehicle:
    2016 Prius
    Model:
    N/A
    I helped my daughter shift house today, with a few loads in the boot of the PRIUS as well as her van.

    I had the door open each time for maybe 20-30 mins and it was VERRRRY DIFFICULT to pull down to shut - it was as though the struts had almost jammed.

    Opening it for a minute or so to put shopping etc in, is never a problem. I tried it a few times for short openings when I got home, and it was fine.

    Has anyone had any experience with this? It's due for service next few days, so I can ask them, but wondering if it's a common problem.
     
  2. au_prius

    au_prius Australian Prius Driver

    Joined:
    Apr 9, 2008
    67
    55
    0
    Location:
    Australia
    Vehicle:
    2016 Prius
    Model:
    N/A
    Was the problem noticeable or worse in winter? (For the benefit of our Northern Hemisphere friends, it's currently summer here!)
     
    Prodigyplace and alanclarkeau like this.
  3. alanclarkeau

    alanclarkeau Senior Member

    Joined:
    Feb 24, 2016
    5,539
    6,158
    0
    Location:
    near Brisbane, Australia
    Vehicle:
    2016 Prius
    Model:
    N/A
    No - it was 30+ C degrees today (about 90F). I haven't noticed it before, but I've never had the boot open any more than a couple of minutes previously.
     
  4. Prodigyplace

    Prodigyplace Senior Member

    Joined:
    Nov 1, 2016
    10,467
    9,999
    0
    Location:
    Central Virginia
    Vehicle:
    2017 Prius
    Model:
    Two
    Keep us informed what the dealer says. I cannot test in hot weather. It was 4F yesterday & 25F today on my morning commute. Hopefully we get above freezing today.
     
    alanclarkeau and RCO like this.
  5. RCO

    RCO Senior Member

    Joined:
    Aug 31, 2016
    3,708
    5,153
    0
    Location:
    Cornwall
    Vehicle:
    Other Hybrid
    Model:
    N/A
    No need to get frosty! :ROFLMAO::ROFLMAO::sneaky:
     
    Mendel Leisk, krmcg and Prodigyplace like this.
  6. Prodigyplace

    Prodigyplace Senior Member

    Joined:
    Nov 1, 2016
    10,467
    9,999
    0
    Location:
    Central Virginia
    Vehicle:
    2017 Prius
    Model:
    Two
    Thanks. The temperature here is now above freezing. (34F). :D
     
  7. RCO

    RCO Senior Member

    Joined:
    Aug 31, 2016
    3,708
    5,153
    0
    Location:
    Cornwall
    Vehicle:
    Other Hybrid
    Model:
    N/A
    Cool !!!
     
  8. davids45

    davids45 Active Member

    Joined:
    Nov 23, 2016
    103
    124
    0
    Location:
    Chatswood, NSW
    Vehicle:
    2016 Prius c
    Model:
    One
    G'day Alan,

    Assuming this was a ONE-OFF problem:

    Was there any fine dust in the air when the rear was open for that longer-than-normal period?

    Struts can collect dust as they are outside the car, albeit in the rear door groove. Mine seem to go algal - a bit humid around here. (I have noticed this build-up of gunk on some of my annual car-washes - whether the car needed it or not.)

    Maybe thermal expansion of one of the strut components if parked open long enough in the sunshine of the Sunshine State?

    Loose fitting of one strut (any play in either strut)?

    Anyway, this clearly (and cleverly) rules you (and your Prius) out from helping your children move in future;).

    David S.
     
  9. alanclarkeau

    alanclarkeau Senior Member

    Joined:
    Feb 24, 2016
    5,539
    6,158
    0
    Location:
    near Brisbane, Australia
    Vehicle:
    2016 Prius
    Model:
    N/A
    No, clean air, in the sun one end, under shade unloading end. No - it was each time - 4 loads with open long time to both load and unload - ie 8 times. First time, I opened it again immediately and closing was "normal". I tried again last night for just a minute or so, and it closed normally. Then, cooler evening, after sundown, opened it for 20 mins, and again it was VERRRY hard to pull it shut again.

    I just went outside and checked, all the fittings seem to be good and tight.

    In the past, I've had OLD struts not hold the door open properly, but never this action. And this is with PRIUS' lightweight back door.
     
  10. David Beale

    David Beale Senior Member

    Joined:
    Jul 24, 2006
    5,963
    1,933
    0
    Location:
    Edmonton Alberta
    Vehicle:
    2012 Prius
    I see the same thing with my FJ Cruiser hood struts. I think the oil evaporates from the rods when exposed to air too long.
     
    goldfinger and alanclarkeau like this.
  11. alanclarkeau

    alanclarkeau Senior Member

    Joined:
    Feb 24, 2016
    5,539
    6,158
    0
    Location:
    near Brisbane, Australia
    Vehicle:
    2016 Prius
    Model:
    N/A
    SAMANTHA went for her 1,800 league / 6 month service today and I asked them to check the struts. They've ordered a new pair under warranty - said they'd probably take a month+ to arrive from Japan.
     
    bisco, au_prius and RCO like this.
  12. au_prius

    au_prius Australian Prius Driver

    Joined:
    Apr 9, 2008
    67
    55
    0
    Location:
    Australia
    Vehicle:
    2016 Prius
    Model:
    N/A
    The struts -- are they KYB brand? They seem to make most Toyota gas struts for hatches / bonnets, with some made by STABILUS also...
     
  13. alanclarkeau

    alanclarkeau Senior Member

    Joined:
    Feb 24, 2016
    5,539
    6,158
    0
    Location:
    near Brisbane, Australia
    Vehicle:
    2016 Prius
    Model:
    N/A
    upload_2017-2-8_8-47-58.png

    Are yours the same? Yours is an I-Tech isn't it?
     
  14. au_prius

    au_prius Australian Prius Driver

    Joined:
    Apr 9, 2008
    67
    55
    0
    Location:
    Australia
    Vehicle:
    2016 Prius
    Model:
    N/A
    IMG_0669.JPG
    Yes, same! I thought they were KYBs but they are indeed STABILUS brand.
     
    alanclarkeau likes this.
  15. alanclarkeau

    alanclarkeau Senior Member

    Joined:
    Feb 24, 2016
    5,539
    6,158
    0
    Location:
    near Brisbane, Australia
    Vehicle:
    2016 Prius
    Model:
    N/A
    Your camera is better than mine ;)
     
  16. alanclarkeau

    alanclarkeau Senior Member

    Joined:
    Feb 24, 2016
    5,539
    6,158
    0
    Location:
    near Brisbane, Australia
    Vehicle:
    2016 Prius
    Model:
    N/A
    How are yours - try leaving the tailgate open for ½hr and see if they're stiff? I reckon a very light person would have just hung on the handle.
     
    RCO likes this.
  17. au_prius

    au_prius Australian Prius Driver

    Joined:
    Apr 9, 2008
    67
    55
    0
    Location:
    Australia
    Vehicle:
    2016 Prius
    Model:
    N/A
    I've had nil issues so far but I haven't left the tailgate up for extended periods. I'll give it a try and report back.
     
    alanclarkeau likes this.
  18. Philthunder

    Philthunder Member

    Joined:
    Jul 15, 2016
    37
    30
    0
    Location:
    Uk
    Vehicle:
    2018 Prius PHV
    Model:
    Excel
    I have had the same problem in summer, I thought it might just be the seals, KBY also make motorcycle forks. They call it stiction on a motorcycle. Silicon grease under the seals, not so easy on a gas strut. I would have thought gas seals would be much tighter.
     
  19. alanclarkeau

    alanclarkeau Senior Member

    Joined:
    Feb 24, 2016
    5,539
    6,158
    0
    Location:
    near Brisbane, Australia
    Vehicle:
    2016 Prius
    Model:
    N/A
    Mine was replaced under warranty because it was so stiff. It's now much the same again - like if I'm doing yard work at my Dad's place and leave the hatch open - takes quite a pull to close. But - I don't think I'll bother with warranty again - they'll only replace it with the same again. I can live with it.
     
    krmcg likes this.
  20. krmcg

    krmcg Lowered Blizzard Pearl Beauty

    Joined:
    May 15, 2008
    2,346
    2,153
    0
    Location:
    Whittier, CA
    Vehicle:
    2016 Prius
    Model:
    Four
    The longer my hatch is open the harder it is to close. But, not something that is a "problem".
     
Loading...