NHTSA Complaint #11427708 — 2017 CADILLAC XT5

XT5 bumper-to-bumper warranty expired on 6-1-21. Both key fobs suddenly quit working on 7-17-21. Took to dealer 7-21-21. Cost me $300. Got it back on 7-26-21. Drove vehicle for the first time after getting it back on 7-28-21. Key fob quit working again briefly then started after I kept trying for a few minutes. After driving for 5 miles, the car completely died on very busy road - no steering, no dash lights, break lights - then the car suddenly braked really hard and i almost got rear-ended. 4-way flashers wouldn't work so I had no way to warn other drivers coming up behind me. I also was a sitting duck as I couldn't exit the vehicle since the doors wouldn't unlock and windows wouldn't go down. The temperature was in the 80s and I quickly began to overheat. I tried to signal other drivers who were beeping their horns and swerving around me until several pulled over to help. After approx. 10-15 minutes, as I was calling 911, the doors unlocked and I got the 4-ways to come on though they were working erratically. I called the dealership and they came and picked up the car. They've had it for a week and don't know what's wrong with it. This is a potentially deadly safety issue; I could have died or caused someone else to be injured or die due to the car suddenly losing ALL power while driving in heavy traffic with no warning, then braking hard and very unexpectedly, along with the inability to warn other drivers due to the inoperable 4-ways I also could have succumbed to hyperthermia as there was no way to escape from an extremely hot car. It appears that after doing some basic research, that this is not an isolated problem with the 2013-2017 XT5s. There are numerous reports of incidents similar or identical to mine found on various Cadillac owners online forums. Additionally, a common complaint is that this problem has not yet been solved yet by General Motors and their dealerships are at a loss to resolve this issue (they haven't been able to fix mine yet!)