The Tucson has this feature of opening the trunk if you stay behind it for more than 3 seconds and with the keyfob on you. Maybe that could be the reason but if not, bring it to the dealership immediately!

 

I have had this happen to me and it took some detective work to figure out why. In my case, it was the proximity key/remote. What I have noticed is that that its range is significant. I have found that I can unlock, lock, open and close the boot from 20 stories up in an office building when the Tucson was within sight of the remote. I've also found that the remote has buttons that when it's in your pocket can activate a button if you have spare change or other items. Perhaps you are seeing a variant of this?

Another data point. I have never seen this happen at home as I have an underground car park in my condo. Thus there's no way for this to happen as the key fob/remote would never be able to reach the car.

 

Mine has done this a few times. It has always been when the key was in my pocket along with another item that seems to have pushed the button when I was sitting down. Since discovering this, I make a habit of returning it to the key basket instead of leaving it in my pocket all the time...no problems since.

 

Hi tucsonownerinSyd!
Read this thread:
http://www.hyundai-forums.com/2016-tucson-ix35-models/453514-smart-key-covers.html

I purchased the Keyless Remote Cover and my problem went away.

Enjoy your ride!

 

It happened to me . Left the keys in my pocket with my phone and some change. Was enough to press and hold button. Actually got to watch as it happened.
Too bad there wasn't a slider to protect buttons.

Also got hit in the back with the gate as I was shoveling the driveway activated liftgate. At first I thought my wife was trying to back over me. Phew...


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Other owners that had this issue early on reported it was to do with the stops they put on the frame to adjust the closed position of the hatch. If they were not letting the hatch close fully each time the hatch would re-open some amount of time after closing.

 

Yes this a common problem with the Tucson. The tailgate is being opened by your key fob. When you are at home the fob is not in contact or being moved in any way, but in your bag all sorts of things are touching it and so the very long reach of these fobs opens the tailgate from some distance away. Put the fob in a small box and cover the buttons with a cut up piece of an old credit card taped on in some way. You have lost the functionality of the fob but it saves long and pointless conversations with your insurance company. Do not think that turning of the function will solve the problem it will not, it is a function of the fob not the car sensors....Good luck

JSNI

 

Thank you! I thought I was going crazy as it's happened twice now; once out shopping and once out for dinner.

 

I have ha my Tucson for almost two years and this has happened to me three times. Big worry.

 

I have a 2018 Tsucon and my trunk continues to open on its own. Many times after locking and going shopping I come out and trunk opened. I have been driving and it opens, it is so scary when my groceries fall out. Is there a way to disable? I really wanted this feature and I am so disappointed.

 

It allows you to open the rear when driving? I would be surprised if that is even possible.

 

Seriously folks, follow post #5 above. A thick silicone or similar keyfob cover reduces the risk of accidental presses, and of course protects these expensive items from damage.

 

This is strange , though.

When I'm driving, my trunk doesn't open unless the gear is in Parking position, I've tried many times.

Maybe you should have it inspected by the dealer?

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