2021 Ford F-150 Hybrid

The Check Engine Light illuminated and brought to Ford dealer. Was advised it has code P237C which is a failed Exhaust Heat Exchanger, dealer ordered part # ML3Z5A212W. There is no coolant leak visible from the failed part. But driving down the highway around 70mph, the vehicle suddenly decelerates and goes into Reduced Power Mode, throttling back the engine. The reduced power mode is displayed on the instrument cluster, but it is still startling to have the vehicle decelerate, especially at highway speeds in traffic. And would be more problematic with a trailer in tow. My Ford dealer has the part on order but Ford states it is on back order with no expected delivery date. Very disappointing from a quality stand point, but a concern as well from a safety perspective. I know others have had a similar issue which is also accompanied by a coolant leak, which I do not have on my vehicle but I am concerned and continue to monitor for leaks and watch the fluid level. I do not have any photos of the valve. Unexpected reduction of engine power in my opinion is a safety issue, especially at highway speeds or when towing. Thank you for your review of this issue.

Fails to accelerate when switching from electric power to gas power. This happens when pulling out of a parking lot onto a Houston,Tx feeder street after the truck has set for awhile and on electric power when started and medium to full power is used to merge into traffic. The switch over from appears to work but shows no turbo boost causing a lack of power to merge safely and this only happens after first start the rest of the day truck operates normally or until it is shut off again for awhile making this truck a accident waiting to happen. Yes the service manager witnessed this so left truck to be repaired but since no engine check lights or codes he had to call ford without knowing all the answers from one little short ride they came back with a answer that was unacceptable blaming it on a clutch operation that was normal. If so why does it happen only after new start and corrects itself?