I have a 2018 Honda Civic. I am having a problem with the trunk opening spontaneously. When I leave the car, using the key fob to lock the doors and set the alarm, I then check the trunk lid by actually tugging on it to make sure it's shut and it's shut. Only to come back to my car to find the trunk lid is open approximately 2-3", the same if I had used the key fob. At first I thought it was me hitting the trunk open button on the key fob. This is becoming a regular occurrence. I am extremely cautious as to how I am handling the key fob when walking away from the car.

I do not have this problem when the car is not locked or the alarm is not set (i.e. when in my garage).

Any suggestions out there?

 

welcome to the forum. due to the car is a 2018 and still under warranty, return to the dealership and advise them of what is happening, they need to fix this.