Three problems related to water pump have been reported for the 2016 Hyundai Sonata. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2016 Hyundai Sonata based on all problems reported for the 2016 Sonata.
In June of 2020 I got an emergency warning on my vehicle's dash that there was a problem with the hybrid system and should stop my car immediately and take it to the dealership. The vehicle slowed to 20 m. P. H. Then came to a stop, I took the car to the dealer where it was kept for 10 days, I was told they could not duplicate the problem and I picked up the vehicle. Half a block from the dealer it happened again, I returned the vehicle to the dealer they said it was a spark plug which was replaced. I expressed my concern with the car coming to a stop in the middle of traffic. On March 3, 2021, the same thing happened, a warning on my dash, the vehicle slowed and came to a complete stop. I again took it to the dealer and was told that the electronic system was having issues with the water pump and new pump would be ordered. I again expressed concern as now I do not feel the vehicle is safe to drive. I live in southern California and take the freeways on a regular basis. Having the car come to a stop in the middle of a busy freeway is extremely dangerous to me and other drivers.
Vehicle has persistent issue with hybrid system. Check engine light will come on, and after some period of time, error message "check hybrid system. Turn off engine. " will appear. Car then loses power from combustion engine, and can only operate on electric. Requires pulling the car over, turning the car off, then turning the car back on, which will allow power to the combustion engine to be temporarily restored, but the check engine light will remain on. The car is unsafe to drive in this state until looked at by the dealer. The diagnostic code is p2600. This vehicle has been taken in for service by the same dealer for the same issue four times, and is now scheduled for a fifth. The dealer has been able to fix the issue three times for a period of about 7-12 months after replacing the water pump, but issue continues to recur. Dates of issues and mileage below: March 1, 2018: 27,451 October 15, 2018: 39,820 June 3, 2019: 47,380 July 26, 2020: 60,500.
The contact owns a 2016 Hyundai Sonata. The contact stated that while driving 25 mph, the warning message "shut off" had displayed before the vehicle stalled. The vehicle was later taken to the local dealer fairfax Hyundai located at 10925 fairfax blvd, fairfax, va 22030 who diagnosed that the water pump and engine gasket were faulty. The vehicle was repaired and the failure was remedied. Additionally, the instrument panel displayed had suddenly shut off while driving. The cause of the failure was not determined. The engine would also rev very high while operating the vehicle. The main relay was replaced by the dealer. The manufacturer was notified of the failure. The failure mileage was 22,700.