2017 genesis g80, all wheel drive, 3.8 l engine. car was being driven on a 4 lane expressway in heavy, rush hour traffic using advanced cruise control set near speed limit. g80 was in the left lane attempting to pass a vehicle on the right. there was a vehicle ahead of the g80. driver noticed another vehicle coming up fast from behind until it was very close to the rear of the g80. when driver attempted to accelerate away from tailgating car, engine revved, and did not engage. it appeared disconnected from transmission as if in neutral. tachometer needle swung wildly. vehicle slowed since it was not engaged, creating more risk from tailgater. the tachometer behavior and gear neutrality persisted for approximately five seconds and then engine engaged. took car to dealer who was unable to replicate behavior or detect system errors after three days of work. dealer reported that manufacturer's engineers were unable to recommend anything. no repairs made.
While driving on an incline toward a stop sign, the vehicle turned off. while moving forward as cars pulled out of the stop sign the car lurched (similar to if you were hit from behind) and all screens went dark and all electronics went off. everything came back on within 1-2 seconds and the car proceeded as normal.
The car randomly does not turn on when i press the start button. nothing happens. it's not the key fob either because absolutely nothing works in the car at that point. i can't open the trunk using the button inside the car, lock or unlock the doors, nothing. the car is essentially a useless hunk of metal. after about 15-20 minutes though, the car will just randomly turn on. i don't press the start button - it'll just turn on. this has happened on 3 separate occasions so far.
Tl* the contact owns a 2017 genesis g80. while driving various speeds, the vehicle hesitated to accelerate. there were no warning indicators illuminated. the failure occurred intermittently. meriden hyundai (318 s broad st, meriden, ct 06450, (203) 235-1669) diagnosed the vehicle, but did not find a failure. the vehicle was not repaired. the manufacturer was not made aware of the failure. the failure mileage was 10,000.