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Discussion Starter · #1 ·
Hello fellow QX60 owners. I am new to the forum. In fact, other than radiator fan bearings, we've never had any issues with our 2015 so I never thought to seek out a forum. However, we had a recent incident that made me start doing some research and I thought a forum of other QX60 owners would be a great place to share the situation and ask for help and opinions.

What happened: My wife, who drives the car daily, went to pick up our son from a friend's house and pick up dinner for the family on the way home, parked in the driveway and, as she and our son were getting out of the car, it began rolling backwards down the driveway and ultimately stopped after hitting the curb on the other side of the street.

I've uploaded the video from my Nest Doorbell camera:
. Pictures are below.

So, first things first, nobody was hurt and I am extremely grateful for that.

Another thing right off the bat, I have no idea what happened and I'm not sure I have any way of ever knowing what actually happened. Upon first viewing, the most obvious assumption is that my wife somehow didn't put the vehicle in park when she pulled into the driveway. I get it and am not going to argue with anyone who is convinced that is the reason why it rolled backward. The only thing she can remember is that she immediately tried to press the brake and the brake didn't work. She doesn't remember trying to move the shifter at all and the short amount of time that this occurred in suggests that she only had time to try to press the brake. If you watch and listen to the video, she has to start the car in order to move it back into the driveway and there is no engine sound at the beginning of the video so the engine appears to have been off when this happened.

What I am after is opinions on whether or not it's possible that the issues that are behind the CVT warranty extension could be at the root of this? That would assume that the vehicle was in park when it happened, I know. Which is why I'm taking the time to ask if it is possible. If it's possible then this is a pretty big deal. If it isn't then I've only wasted my time in writing this and you fine folks' time in reading and responding. It is worth asking.

Let me explain why I'm even entertaining this as a possibility. My wife, if you ever got to meet her - rather ride with her in her QX60 - is that she always puts the car in park and sets the parking brake. Every time without even thinking about it. It's just second nature to her. That doesn't mean that she didn't get distracted, but I'm telling you that if you knew her, you'd realize how unlikely that would be. Again, not impossible, just not very probable.

Another reason why I'm entertaining the CVT being the root issue is the audio from the video. After the noise of the door scraping against my truck, it sounds like there is other noise - clicking/ticking/whatever - that sounds almost like the transmission didn't lock into position when it parked and it was making that noise as it was rolling backward.

After that last sentence, I'm sure it's apparent that I'm no mechanic and I don't really understand the actual mechanics of how transmissions work. Yet another reason why I need to ask for help and guidance.

Honestly, I am open to any questions, comments, suggestions, opinions, or wisecracks. Just please keep them on topic. Ha!

Jeremy

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That looks scary, I'm glad nobody was hurt.

The vehicle is "supposed" to have a ton of safeguards preventing movement while the engine is off, but if that were true then unintended acceleration (Toyota) wouldn't exist. I hope you find out what happened.

Have you tried to replicate the situation, turn the motor off but leave in Drive, turn the motor off and shift to Park, shift to Reverse, etc....
 

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Discussion Starter · #3 ·
Thanks yeller. I also assumed that there were safeguards but don’t know anything about them to know what should have happened or not. The only time where it is expected to roll when the engine is off, to my knowledge anyway, is when the transmission is in Neutral. If she mistakenly put it in Neutral then the parking brake should have held it. I don’t think that the slope of our driveway would be enough to overcome the parking brake but if she was distracted enough to mistakenly put the vehicle in Neutral then she could have been distracted enough to not put the parking brake on too. Who knows.

As for trying to duplicate it, this happened right in the middle of us trying to get our house ready to put on the market so I was so busy with that to even think about trying to duplicate it. And now it’s in the body shop so I can’t try it. It would have been better to try to duplicate it before the car is fixed just in case but I guess I’ll have to try it after we get it back. That was a good idea. Thanks!

Jeremy

That looks scary, I'm glad nobody was hurt.

The vehicle is "supposed" to have a ton of safeguards preventing movement while the engine is off, but if that were true then unintended acceleration (Toyota) wouldn't exist. I hope you find out what happened.

Have you tried to replicate the situation, turn the motor off but leave in Drive, turn the motor off and shift to Park, shift to Reverse, etc....
 

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Yea, it seems almost like the Parking Prawl (the mechanical link in your transmission that keeps the car from rolling when not in gear) may have gone out. No other strong clue, and just going off what you told us.
But as another poster mentioned, it seems like Nissans occasionally have a problem with this. Maybe worth looking into.
 

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Discussion Starter · #7 ·
Thanks everybody. We get the car back from the body shop one day next week. I’ll try to duplicate the situation as safely as possible when I can and also file a complaint with the NHTSA. I’ll update here if I learn anything worth sharing for sure.
 

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Thanks everybody. We get the car back from the body shop one day next week. I’ll try to duplicate the situation as safely as possible when I can and also file a complaint with the NHTSA. I’ll update here if I learn anything worth sharing for sure.
Hi Jsampsell, any luck recreating the issue or getting Infiniti to look at the parking prawl?
 
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