Horn Assembly problems of the 2017 Cadillac XTS

Problem #1 - trunk opens by itself (sometimes while vehicle is stationary & locked (I. E. , parked for the night - engine off); other times the trunk opens by itself while I am driving/moving (engine obviously on); other times while the engine is on and the vehicle is stationary (I. E. , vehicle is at idle). I know for a fact that these episodes occurred without me pressing the trunk button - whether it be the inside/door trunk button; key fob trunk vutton; or the trunk release on the trunk itself. It is a safety hazard to have the trunk suddenly open while driving at 70 mph or while driving at 35 mph (can happen at any speed, including 0 [zero]). It is a security matter as when parked and the trunk opens by itself, it leaves me vulnerable to theft of my property. Problem #2 - driver door lock. The driver's door mysteriously unlocks at times (only the driver's door unlocks -- the other 3 doors remain locked) - . So far, this only occurs while the engine is off and the vehicle is stationary and parked. I have noticed by now that on over 10 occasions, my drivers door (only) is already unlocked when I approached the vehicle. The "passive lock" feature is on, so the car automatically locks itself as I walk away from it (and I always listen for horn chirp while walking away indicating that the car has locked itself). Other times, I double-check the locking by either using the key fob or depress the inside power lock power door lock switch or press the unlock/lock small button on the exterior driver door handle. When I find the driver's door unlocked, it is impossible for me to manually re-lock the car. If I press the interior power door lock button, all 4 door locks lock momentarily, then all 4 doors unlock themselves - (so now all 4 doors are unlocked). The only way for me to lock the car at this point is to use the key fob.