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

*IMO Don't buy a 2K4 Prius and if you own one don't drive it

Discussion in 'Gen 2 Prius Main Forum' started by Frank Hudon, Apr 4, 2004.

  1. Frank Hudon

    Frank Hudon Senior Member

    Joined:
    Jan 11, 2004
    4,147
    18
    0
    another mile with out taking the plate that forms the floor in the hatch. This is the single most dangerous piece of this car and could cost you thousands or possibly your life. The following 2 pictures of my wife's Prius that was hit from behind and had the bumper over run, caused almost $20,000 in damage and has probalby ruined any value in the car because the Toyota zone rep figures that you can have the battery case pushed in and the battery pack hit on the terminal strip and not cause any damage to it. On the pictures you can see there is very little damage to the quarter panels and the upper part of the hatch dosen't even have the window broken but the lower portion of the hatch pulled in the end panel and that cause the trunk plate to hit the HV batteryand push the cover into the internal parts of the actual battery. A little harder and the battery could have shorted to the cover and possibly eletrocuted the 2 people who came to her assistance. Unfortunatly the car was push forward into the back of a slip deck tow truck and sustanined minor damage on the hood that pushed the rad support back. Fortunatly there was no damage to the inverter. Take the floor plate out of your Prius and don't suffer like we have. My opinion of the Toyota Canada rep's is they are totally lacking in knowlage of the car and as such Toyota really ought to put out a proper training package for them on how to handle such items as battery damage etc. I'm sure if Panasoinc knew about this damage they'd drop warranty on it in a heart beat. The insuance adjuster is just as adamant there is no damage, I ask, have you ever had a flashlight battery fall on the floor and get full life out of it, I never have. The HV battery managed to start the ICE but they haven't tryed to drive the car to see if it has any real capacity left. The body shop is doing a really good job on fixing the body damage, mind you we bought the car on Nov.29 2K3 and the accident happened on Jan26 2K4 and as of today the car still isn't repaired but the shop has now got all the parts, just need the time to finish it off.
     
  2. HTMLSpinnr

    HTMLSpinnr Super Moderator
    Staff Member

    Joined:
    Dec 8, 2003
    5,339
    917
    251
    Location:
    Surprise, AZ (Phoenix)
    Vehicle:
    2018 Tesla Model 3
    Model:
    N/A
    This post makes little sense. What are we supposed to do with this plate? Are you stating that the rear floor plan pushed in and crushed the battery? Did the battery receive damage? Is it repairable? What type of vehicle struck the car from behind?

    The pictures don't show the damage that occurrred on the inside to illustrate the point - just that the rear hatch is a bit caved. Visibly, if it wasn't for the stated possible battery damage, I'd say it looks drivable.

    Sorry to see the damage that occured. We would, however, like a bit more information before we consider taking your advice.

    -Rick

    (Edit - above post was edited for clarification)
     
  3. m4prius

    m4prius New Member

    Joined:
    Mar 28, 2004
    59
    0
    0
    Location:
    Ohio
    Vehicle:
    2011 Prius
    Model:
    Three
    What type of vehicle hit you????
    What does this mean? " Take the floor plate out of your Prius and don't suffer like we have"
    Keep us posted...Hopefully no one was hurt.

    Mike
     
  4. Frank Hudon

    Frank Hudon Senior Member

    Joined:
    Jan 11, 2004
    4,147
    18
    0
    Rick go out and take a look at how little clearance there is from the front of the plate to the battery case, on the inside of the case there is about 1/2-3/4" clearance the end panel is the rear support for the plate and if you have the hatch pushed in 2 inches it's already hit the HV battery. The car got hit by a Ford Econoline van as she was sitting in a Left turn lane waiting for the light to change. She thinks the car got pushed forward about 10-12 feet if not more. This is a real conceren to me for peoples safty. Just look at your car and think what would happen to you kids in the back if you tried to get to them and the car was "hot" not a pretty thought.
     
  5. Frank Hudon

    Frank Hudon Senior Member

    Joined:
    Jan 11, 2004
    4,147
    18
    0
    the reason the car isn't driveable is because the backup power pack for the brakes was also damaged along with the computer to control it.
     
  6. efusco

    efusco Moderator Emeritus
    Staff Member

    Joined:
    Nov 26, 2003
    19,891
    1,192
    9
    Location:
    Nixa, MO
    Vehicle:
    2004 Prius
    Model:
    N/A
    Sorry Frank, I don't get your point either. Perhaps you could clarify exactly what the damage is to the battery.

    Then, even if there is/can be battery damage why would you recommend people not drive their cars? There is risk to damage of lots of parts of lots of cars if hit just right.

    I'll grant that this seems to be a bit of a design flaw that such a minor direct trauma could cause so much damage, but to take that to the "don't drive it" suggests an immenent risk to safety, and that I just don't see from what you've described.

    Please try to clarify succintly.
     
  7. Frank Hudon

    Frank Hudon Senior Member

    Joined:
    Jan 11, 2004
    4,147
    18
    0
    What I said was don't drive it with the trunk plate in it. Take it out. All Toyota has to do is supply a new trunk plate that is about 3 inches shorter and a pair of hinged plates that connect to the rear seat backs so as the seats fold down the plates ride on top of the trunkplate to allow the gap to be covered. Hope that clears it up a bit.
     
  8. HTMLSpinnr

    HTMLSpinnr Super Moderator
    Staff Member

    Joined:
    Dec 8, 2003
    5,339
    917
    251
    Location:
    Surprise, AZ (Phoenix)
    Vehicle:
    2018 Tesla Model 3
    Model:
    N/A
    Are you stating that the car was indeed "hot" after this accident? I'm still not sure what "plate" means - is it the floor pan? I suppose looking out in the car is the only way I'm going to get that answer. I'll bring my digicam out and take photos of the area so that we can further figure this out.

    It's been stated that the terminals are located on opposite sides, so that in all but the most serious intruions, the battery would not become "hot". I believe Wayne Brown (mwbueno on Yahoo!) was the one that pointed that out.

    If this is indeed a reproducable case, I would hope that Toyota would modify the design and/or issue a safety recall.

    The modules back in the trunk are the 12v battery - if much of anything got damaged back there, the car would be rendered inoperable - good point.
     
  9. HTMLSpinnr

    HTMLSpinnr Super Moderator
    Staff Member

    Joined:
    Dec 8, 2003
    5,339
    917
    251
    Location:
    Surprise, AZ (Phoenix)
    Vehicle:
    2018 Tesla Model 3
    Model:
    N/A
    So we're talking about the plastic piece that latches? This itself is hinged. Either way - I'm going out shortly (once my wife returns to watch the kids) to take a peek at this.
     
  10. Frank Hudon

    Frank Hudon Senior Member

    Joined:
    Jan 11, 2004
    4,147
    18
    0
    Rick just behind the aux battery is the power supply module for the electric brake power pack. It consists of 27 capacitators in a plastic case along with a small computer module. It powers the brakes in case of a 12volt interuption so there is pressure available to provide brakes. Evan the battery case pushed on the terminal strip on the rear of the battery and pushed in the actual battery modules in about 1 inch. Looking at the car from the rear it was hit on the RH side. and the top was pulled down. Unfortrunatly I dont' have digipix of the battery damage but the bodyshop does. The shop manager said that the trunk plate is going to be a problem on these cars if the design isn't changed. And I agree with him.
     
  11. HTMLSpinnr

    HTMLSpinnr Super Moderator
    Staff Member

    Joined:
    Dec 8, 2003
    5,339
    917
    251
    Location:
    Surprise, AZ (Phoenix)
    Vehicle:
    2018 Tesla Model 3
    Model:
    N/A
    Thanks for clarifying on the brake module.
     
  12. m4prius

    m4prius New Member

    Joined:
    Mar 28, 2004
    59
    0
    0
    Location:
    Ohio
    Vehicle:
    2011 Prius
    Model:
    Three
    Does the floor plate cut into the battery during a rear end impact??? Is the floor plate plastic with metal hinges or plastic??? Sounds like the Battery is located too high in the car...if it were near the bottom like a muffler system then impact would not involve the cabin area.

    Mike
     
  13. Frank Hudon

    Frank Hudon Senior Member

    Joined:
    Jan 11, 2004
    4,147
    18
    0
    the trunk(floor) plate is plastic and about 1" thick. It needs to be about 3 inches shorter and have a reinforcing edging inserted into the front (battery end) edge. Then there needs to be a pair, on either side of the lower well, metal locks that stop the plate from moving ahead. Then all that is required is to put hinged plates on the seat that cover the opening that the shorter plate creates at the front and fold forward when the seats fold down.
     
  14. plusaf

    plusaf plusaf

    Joined:
    Feb 15, 2004
    324
    5
    0
    Location:
    Raleigh, NC
    Vehicle:
    2004 Prius
    Model:
    N/A
    Frank, if the plate were three inches shorter, would that make the battery safe in all rear-end collisions or just the ones that push the plate less than three inches? sounds like a deflector to let the plate ride up and over the battery might be better? the same way most engines and engine compartments are designed to prevent the engine from coming through the firewall and into your lap...

    i'd also take exception to your description of the likelihood of an electrical danger to someone entering the car for rescue. to be dangerous, there has to be a full path for the current, even from a 200v battery. you have to connect to both the positive and negative sides. even if insulators were broken, if either side of the big battery got in contact with the frame or other piece of body metal, it's not a hazard in itself. if it were squashed in such a way that it was internally shorted, it might not be worse than what happens when you short out a lead-acid 12v car battery--- it either explodes and showers you with sulfuric acid or blows a hole in its side, spraying everything around it with the same hot acid. not a pleasant thing, of course, but more of a shrapnel problem than one of electrical.
    imho.....
     
  15. Frank Hudon

    Frank Hudon Senior Member

    Joined:
    Jan 11, 2004
    4,147
    18
    0
    Yes that would only protect the battery if it was pushed in 3 inches. One of the problems with the current design as I see it is there is no lock to stop the plate moving forward other than I think it's 5 little plastic tabs on the front of the plate. If it had a lock to prevent forward movement and a reinforcing strip in the front to hold it from going forward that would help stop potential damage to the battery and let the plate break up instead. You really don't want anything to allow the plate to ride up and over the battery as the next stop is the rear seats and that's a definat no no. I'm really not sure but I do know if the plate is out most parts including you are safe. As for the battey shorting to the case and making the car hot anything is possible, that's why Toyota has issued instructions to rescue crews and fire dept. about the possible electrocution hazzard these cars can present. On this car when the back of the case pushed in and forced the battery modules to move they move the othe side over and the temial strip on the front side contacted the front part of the case. How many volts were potentialy present I don't know for sure but I don't want any potential for electrocution because of a minor accident for me or any other Prius owners.
     
  16. Sharon

    Sharon New Member

    Joined:
    Mar 23, 2004
    9
    0
    0
    Location:
    Everett, WA
    If this is all true, how could this have got past the collision tests? Seems like this would have been pretty evident.
     
  17. Frank Hudon

    Frank Hudon Senior Member

    Joined:
    Jan 11, 2004
    4,147
    18
    0
    Remember that this car was involved in a bumper over run accident such as when your rearended by a SUV, truck, van or some such vehicle with a higher bumper than is on the Prius. I can't tell what would happen if you backed into a post say in a parking lot, maybe the bumper is strong enough to survive that. It's only aluminum as you can see in the photo and is covered with some foam and a neoprene cover. Next time your driving down the street look in your rear view mirror and see what's following you, if it's a truck van or SUV think about this post.
     
  18. plusaf

    plusaf plusaf

    Joined:
    Feb 15, 2004
    324
    5
    0
    Location:
    Raleigh, NC
    Vehicle:
    2004 Prius
    Model:
    N/A
    amen, Frank, and one of the things i hate most in life is: tailgaters....
     
  19. Sharon

    Sharon New Member

    Joined:
    Mar 23, 2004
    9
    0
    0
    Location:
    Everett, WA
    So, do you get a replacement car per your insurance. And, I take it, your replacement car will not be a Prius, at least an 04??
    All this really concerns me, and I'm sure many others who are wait listed for '04s. Whats the next step as far as this kind of situation and Toyota Corp. After all, seem like every other car/truck out there could have a bumper higher than a Prius's is.
     
  20. HTMLSpinnr

    HTMLSpinnr Super Moderator
    Staff Member

    Joined:
    Dec 8, 2003
    5,339
    917
    251
    Location:
    Surprise, AZ (Phoenix)
    Vehicle:
    2018 Tesla Model 3
    Model:
    N/A
    Until we can verify just how many volts are present in the event of an intrusion, we don't stand to gain a whole lot by reacting to this situation in this manner.

    If I recall correctly, Wayne had explained that in the event that one side of the "bus" was contacted, no effect would come of it. It was also stated that the way the module is designed, touching any one module individually wouldn't yield more than the individual module's voltage unless the HV relays were engaged. In the event of a collision or power off - these relays are disengaged, which means that the voltage experienced wouldn't amount to anything above the single module which is approx 7.2 volts. Only at the actual terminals would the full voltage potential be realized - and only when the relays are engaged..

    I also took some time to look at the floor panel in question. When properly installed, they all ride above the battery module, except for the top most portion which contains the cooling vents - plastic. I could not remove the last portion since they were bolted down with the front cargo hooks, but it appears that the first course would be for the panel you stated panel to fold (buckle) up or down and away. It's first natural tendancey by construction is for the rear to fold up unless there was a top-down force.

    The top of the utility tray below rides at a similar level. This tray is where the jack handles are. If this tray were full of hard or solid items, it seems that they could cause an intrusion if they were forced forward due to an intrusion.