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Fob fell off, only key remains on keyring...NO FRICTION!

Discussion in 'Prime Main Forum (2017-2022)' started by OptimalPrime, Sep 26, 2017.

  1. ct89

    ct89 Active Member

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    Long ago I ran across a thread that was discussing a credit-card shaped equivalent of a FOB...I think it might have been in the highlander version of this forum but I'm not 100% sure. Anyone know if there has been any progress on something with that form factor...I would love to have the car just work whenever I had my wallet with me (and not work when I didn't)...
     
  2. Prodigyplace

    Prodigyplace 2025 Camry XLE FWD

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    2017 Gen 4 Prius FOB
    1. Same
    2. My key holds on the catch.
    3. Unsure what you want here. Sorry.
    4. Yes
    5. I cannot push the key in without retracting the latch.
    6. No
    7. With the key partially latched, I can pick up the fob using the key ring.
     
  3. Sam Spade

    Sam Spade Senior Member

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    Well you can "assert" all you want but your own experience should show you that it is NOT the case.......no matter how much you want it to be.

    So keep asserting......and accomplishing nothing......or change your habits.

    A "watch" pocket is ideal for a FOB. Highly unlikely to accidentally push the buttons if you face them IN toward your body.
     
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  4. OptimalPrime

    OptimalPrime Member

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    From #5 alone, it's clear to me that the 2017 Prius and 2017 Prime must have completely different key-to-fob latch mechanisms. So don't be baffled by #3, it just doesn't apply to yours, I guess.

    On mine, you can push the key in (all the way from outside the fob, to latched in the fob) while not touching the latch. I can stand the fob vertically on my desk (latch/key side up) and push the key in (by pushing it vertically down), which in turn snaps the latch out and back in as the key latches into place. All on its own, just from pushing the key into the fob. And using just a normal amount of force, clearly as designed to operate.

    My 2005 Gen II fob requires me to manually push the latch open before the key will go in, as yours does. And it also has very strong friction both when removing and when inserting, totally unlike the Prime. Way, way more than enough to support its weight, or to stay attached during jostling around even when unlatched and partially removed. So the Gen II basically matches more of your answers than the Prime does.
     
  5. OptimalPrime

    OptimalPrime Member

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    First of all, don't go making assumptions about what might press on buttons on the inside of my pockets.

    Secondly, I only asserted that it OUGHT TO work properly for its intended purpose under normal usage, not that it actually does so, nor that I will continue expecting it to do so, now that it's become obvious that it's a defective design.

    What shocks me is that Toyota knows how to do it well enough, and simply chose not to. To top it all off, apparently they put the very worst, and only clearly-inadequate version of fob on the Prime, but a better version of their already-iffy "hang onto the unimportant/cheap key, not the critical/expensive fob" design on the regular Prius.


    I'm a mechanical engineer. This fob-key connection is simply not secure enough to accomplish its designed purpose reliably. To get right to the point, it is a piss-poor mechanical design, excuse my French. It is far inferior to the design on my 2005 Prius fob, which itself is a lousy design due to relying only on friction if the latch is accidentally hit, plus holding the key 1000x more securely than the fob. But at least the 2005 has enough friction to prevent the great majority of mishaps, while the Prime has so little friction that it will prevent almost no mishaps. Toyota has enough mechanical engineers that something which isn't supposed to fly apart when used as intended, OUGHT NOT TO fly apart!

    Every airbag OUGHT TO not shoot metal bits into people's faces and kill them too. I guess Sam Spade would tell the survivors, and the families of victims of that horrible design, they their assertions to that effect are "NOT the case" too? They should learn to adapt to reality. Wear a face-shield helmet, buy life insurance, kiss their loved ones goodbye every morning, and pick out a grave site in recognition of what car they really own, and don't ask anyone to fix the design....just live and die with it as-is. Fortunately, there are consequences when corporations put defective products on the market. Not big enough consequences often enough.

    Losing a fob may not seem like a big deal, just an inconvenience/hassle. But it can also be a safety/security issue on many levels, depending upon who loses their fob, when and where, etc. Could easily cost someone their life, just like any other type of car breakdown which could have been easily avoided by having a product which does what it's supposed to..
     
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  6. bisco

    bisco cookie crumbler

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    and expensive!

    they must have really changed the gen 4 fobs. the biggest difficulty i have with changing the battery on gen 3 is getting the key out!
     
  7. Lee Jay

    Lee Jay Senior Member

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    Mine has unscrewed itself from the key ring it is attached to, but the key has never come out of the case. Of course, it doesn't really matter since the whole thing is always inside my pocket. I stopped carrying stuff on the outside of my pants about 15 years ago when a cell phone and its entire belt clip came off my belt while I was climbing a wind turbine and fell about 80 feet to the steel deck below. Now everything is inside the pockets all the time.
     
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  8. alexcue

    alexcue Active Member

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    OptimalPrime, I feel for ya. I used to carry keys for my motorcycle in a carabiner, the vibration would loosen the screw on catch and once caused all the keys to fall off. Luckily it was in a parking lot and they all fell close by. That was my lesson, never again would I carry keys out. Now I do have the Key Fob for my motorcycle but it's attached to the fob itself and not to a key. It's a calculated risk at this point. I guess my belt loop could fail, Shit happens. And I know they are expensive to replace and I'd be stuck without being able to move the motorcycle!

    Anyway, now all keys and fobs (other than the above scenario) go in my pocket. I'm not going to be able to improve on Toyota's design. I'm just minimizing an expensive mistake.
     
    #28 alexcue, Sep 26, 2017
    Last edited: Sep 26, 2017
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  9. GT4Prius

    GT4Prius Active Member

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    On mine the latch is recessed mostly within the fob and to unlock it you have to push away from where the key ring is, so the small key ring affords a protective barrier against being caught, even for the tiny bit of the latch that stands proud of the fob.

    So it seems v unlikely to me that mine would come unlatched accidentally.

    Agree that it might be better for some purposes to have key ring on the fob and not on the key, but that would have downsides too, as the key is much smaller than the fob and so it would be much more easily lost if there were no key ring on it.

    Key rings do go wrong though in my experience and carrying keys outside my pockets is something I would consider an unnecessary risk and one that I would avoid.

    Can understand OP being upset in the circs but think that my FOB is ok and am not inclined to share OPs rage about it.

    Posted via the PriusChat mobile app.
     
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  10. Prodigyplace

    Prodigyplace 2025 Camry XLE FWD

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    So, the OP's fobs are either defective or the UK uses a different fob.
    We need @bwilson4web to chime in. He has a Prime Plus.
     
  11. bwilson4web

    bwilson4web BMW i3 and Model 3

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    Not really:
    [​IMG]
    The latch is clearly visible and recessed in the case.

    Bob Wilson
     
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  12. GT4Prius

    GT4Prius Active Member

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    Looks the same as mine.

    Posted via the PriusChat mobile app.
     
  13. Trollbait

    Trollbait It's a D&D thing

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    Using your phone in place of a fob might be possible with the Bolt.
     
  14. Sam Spade

    Sam Spade Senior Member

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    NO, really ?
    Big surprise.
    NOT.
     
  15. Salamander_King

    Salamander_King Senior Member

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    After reading posts on this thread, I decided to purchase Key fob Holder Case.

    Well, Amazon link does not show. Search Amazon for this "TO12-4B-16-001 Leather Key fob Holder Case Chain Cover RING FIT For 2017 TOYOTA PRIUS PHV"
     
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  16. Trollbait

    Trollbait It's a D&D thing

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    Amazon links won't show with an adblocker on.
     
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  17. Salamander_King

    Salamander_King Senior Member

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    I see that's why I couldn't see it. Is that mean for those who do not use Adblock can see Amazon URL link in a comment?
     
  18. heiwa

    heiwa Active Member

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    Were you ever able to find it? I'm hoping that you may have come to a comical but a happy ending to this distressing event of yours like looking for your glasses everywhere only to find it on your head...

    Posted via the PriusChat mobile app.
     
  19. OptimalPrime

    OptimalPrime Member

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    No such luck.

    I'm currently still living dangerously with only one fob (in my pocket, which I'm praying doesn't get a hole in it, hahaha), and no idea where the lost fob is.

    But I've bought a Chinese cable to attempt to get TechStream up and running on a laptop, to see if I can fix the problem myself with just the purchase of a genuine new fob. If I include the $259 price of the new HP Win 10 Pro laptop I bought primarily for this purpose, and the cable, and the trouble of installing an Oracle Win XP virtual machine and a genuine XP Pro license (which I'll hopefully be able to transfer from one of the 4 semi-dead 1998-era laptops I bought used from an employer in 2001) then surely it would have been cheaper to just go to a Toyota dealer.

    But the learning experience, and the ability to do many interesting and money-saving things in the future via TechStream, for myself and friends, will make this approach more satisfying to me. Particularly because I'm going to be doing a brake job on my 2005 Prius soon, and TechStream will allow me to use a better, more risk-free method than without it.
     
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  20. huskers

    huskers Senior Member

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    Can't the FOB call home?
     
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