NHTSA Complaint #10380897 — 2011 HYUNDAI SONATA POWER TRAIN:AUTOMATIC TRANSMISSION

Complaint Details

ODI Number	10380897
Vehicle	2011 HYUNDAI SONATA
Component	POWER TRAIN:AUTOMATIC TRANSMISSION
Date of Incident	January 31, 2011
Date Filed	February 6, 2011
Mileage	630 miles
Crash	No
Fire	No
Injuries	0
Deaths	0
Vehicle Towed	No
State	IN

Consumer Description

HYUNDAI SONATA SE 2011, 630 MILES. WHILE TRAVELING ON AN OPEN STRETCH OF HIGHWAY AT A STEADY SPEED OF 70MPH, THERE WAS A SUDDEN LOUD 'THUMP' SOUND. THE ENTIRE VEHICLE JERKED VIOLENTLY WITH SUDDEN DECELERATION AS IF IT HIT A SOLID OBJECT. DRIVER DID NOT SEE ANY OBSTRUCTION OR IMPERFECTIONS ON THE ROAD PRIOR TO THE NOISE. DRIVER REALIZED THAT THE SPEED WAS ALMOST INSTANTLY REDUCED FROM 70MPH TO ~63MPH. RPMS WERE RACING UNUSUALLY HIGH, AROUND 3000 WHEN TYPICAL OPERATING RANGE IS 2000. DRIVER SHIFTED FROM AUTOMATIC 'DRIVE' GEAR TO SHIFTRONIC AND REALIZED THAT THE TRANSMISSION WAS STUCK IN 4. NEITHER THE MANUAL OR AUTOMATIC TRANSMISSION COULD CHANGE THE GEAR. DRIVER IMMEDIATELY TOOK VEHICLE TO DEALER. DEALER'S SERVICE DEPARTMENT ACKNOWLEDGED THAT THE TRANSMISSION WAS STUCK IN GEAR 4, BUT TECHNICIAN WAS ABLE TO RESET THE TRANSMISSION BY TURNING OFF THE ENGINE AND RESTARTING. BASED ON THE COMPUTERIZED ERROR CODES, DEALER REPLACED THE BODY VALVE HARNESS AND SOLENOID. *TR

Related Complaints for the 2011 HYUNDAI SONATA

Other POWER TRAIN:AUTOMATIC TRANSMISSION Complaints

#10620802 — August 8, 2014 — TL* THE CONTACT OWNS A 2011 HYUNDAI SONATA. THE CONTACT STATED THERE WAS A LOUD BANGING NOISE UNDER THE VEHICLE WHILE...

#10453351 — March 28, 2012 — FROM: [email protected] SUBJECT: RE: HYUNDAI SONATA 2011 DATE: TUE, 6 MAR 2012 18:01:34 -0700 DEAR JAVIER...

#10425530 — September 15, 2011 — I PLACED THE CAR IN PARK WHEN I GOT HOME FROM WORK WENT INSIDE MY HOUSE FOR A FEW MINUTES CAME OUTSIDE, WHEN I TURNED...

#10421697 — August 27, 2011 — 2011 SONATA SE DROPPED TO 4TH GEAR AT 70 MPH WITH LOUD BANG HAPPENED ONCE AND PUT IN SHOP COMPUTER HAD CODE TO REPLAC...

#10420749 — August 19, 2011 — FOR THE SECOND TIME, IN INTERSTATE HIGH SPEED TRAFFIC (70MPH) THE CAR WITHOUT WARNING DOWNSHIFTED. A THUNDEROUS CLUN...

Recent Complaints for the 2011 HYUNDAI SONATA

#11719724 — STEERING — February 22, 2026 — The steering column gets loose because of a commonly defective bushing. The steering bangs and has free play making ...

#11718470 — STRUCTURE:BODY — February 17, 2026 — My car was broken into and they broke off my door handle and took out ignition parts, a police report was done

#11718470 — UNKNOWN OR OTHER — February 17, 2026 — My car was broken into and they broke off my door handle and took out ignition parts, a police report was done

#11713510 — ENGINE — January 26, 2026 — My Hyundai Sonata has encounter two failing cylinders (compression loss) due to scoring. When driving in the highway ...

#11712626 — ENGINE — January 22, 2026 — The contact owns a 2011 Hyundai Sonata. The contact stated that while driving approximately 65 - 70 MPH, there was a ...