NHTSA Complaint #11684677 — 2009 HYUNDAI SONATA

ELECTRICAL SYSTEM issue reported to NHTSA

Check any vehicle history by VIN - Free vehicle history report

Complaint Details

ODI Number	11684677
Vehicle	2009 HYUNDAI SONATA
Component	ELECTRICAL SYSTEM
Date of Incident	August 23, 2025
Date Filed	September 3, 2025
Mileage	N/A miles
Crash	No
Fire	No
Injuries	0
Deaths	0
Vehicle Towed	No
State	MD

Consumer Description

Oil Leak on Alternator Engine leaking oil from the front cylinder bank’s valve cover or from the valve cover’s gasket onto the alternator. An unknown amount of oil damaged the alternator resulting in illumination of the charging system warning lamp and disablement of the charging system. If the vehicle is continually driven with a disabled charging system, the engine can shut off, increasing the risk of a crash.

Related Complaints for the 2009 HYUNDAI SONATA

Other ELECTRICAL SYSTEM Complaints

#11715187 — February 3, 2026 — Passenger seat belt doesn’t click in. Miss fire Poor acceleration Exhaust leak Power lost Mechanic can’t find the pro...

#11709161 — January 6, 2026 — Brakes seize up while driving and then cannot move the vehicle. This causes a dangerous situation while driving and t...

#11684675 — September 3, 2025 — Engine leaking oil from the front cylinder bank’s valve cover or leaking from the valve cover’s gasket onto the alter...

#11533647 — July 21, 2023 — I see that the manufacturer has an "Open Service Campaign" on their Sonata's shark fins. I've taken mine to the local...

#11513832 — March 26, 2023 — Valve cover gasket leaks and oil leaks on to the alternator which can cause the alternator to fail and the battery to...

Recent Complaints for the 2009 HYUNDAI SONATA

#11715187 — POWER TRAIN — February 3, 2026 — Passenger seat belt doesn’t click in. Miss fire Poor acceleration Exhaust leak Power lost Mechanic can’t find the pro...

#11715187 — VEHICLE SPEED CONTROL — February 3, 2026 — Passenger seat belt doesn’t click in. Miss fire Poor acceleration Exhaust leak Power lost Mechanic can’t find the pro...

#11714094 — ENGINE — January 28, 2026 — Once the car gets slowed down and reaches 20 mph of speed by applying the brake or not. It gives a sudden jerk, which...

#11714094 — VEHICLE SPEED CONTROL — January 28, 2026 — Once the car gets slowed down and reaches 20 mph of speed by applying the brake or not. It gives a sudden jerk, which...

#11709161 — SERVICE BRAKES — January 6, 2026 — Brakes seize up while driving and then cannot move the vehicle. This causes a dangerous situation while driving and t...