2024 Hyundai Sonata Transmission Problems

Your car suddenly accelerated on its own while you were pressing hard on the brake after leaving a parking lot, causing it to hit a stopped vehicle multiple times before you turned off the engine. Even though you were braking firmly, the car kept lurching forward and accelerating uncontrollably over a short distance. The issue may involve the throttle control system, brake system, or engine management computer not responding correctly to your inputs.

Your car suddenly lost the ability to accelerate while turning left across traffic at low speed (around 7 mph). You couldn't accelerate even after coming to a stop, but the problem went away after turning the engine off and back on. No warning lights or error codes appeared, and the vehicle operated normally afterward.

Your 2024 Sonata unexpectedly lost power and slowed from 60 MPH down to 20 MPH when you tried to accelerate to pass another vehicle. This happened three times total, and turning the car off and back on temporarily fixed it, though no warning lights appeared. A mechanic diagnosed a failed transfer case, and while the dealer repaired it, they couldn't identify the root cause. The issue occurred around 16,500 miles.

After your 2024 Hyundai Sonata received a software update at the dealer, you've noticed the car jerks and hesitates during acceleration and gear shifts at low to moderate speeds, which feels unsafe in traffic. This problem didn't occur before the update, suggesting the software may have changed how your engine or transmission operates. The dealer hasn't been able to fix it yet. Resolving this will likely require the dealership to reprogram or recalibrate your engine and transmission control software.

Your speedometer reading is inaccurate because your car's speed information comes from the navigation system rather than a traditional speed sensor. The navigation system appears to be glitching, causing incorrect speedometer displays. Your dealer confirmed the issue but said they couldn't fix it. This problem may require a navigation system software update or replacement to correct the speedometer readings.

Your car jerks hard multiple times when you start it in cold weather. You've noticed this is a known issue in previous model years with the same mechanical components, and you're concerned that your 2024 model hasn't been recalled for this problem. The issue likely stems from how the engine manages fuel and ignition timing during cold starts, and may be resolved through a software update or fuel system service.