2014 Hyundai Sonata Hybrid Electrical Problems

• the engine Hybrid electrical network & anti lock braking system (ABS) failed. The independent scan confirmed codes P136 (engine knock signal) U2093/U1004 ( hybrid control module communication loss) and C1614 (ABS CAN TIMEOUT). The vehicle is fully available upon request. • while driving at highway speeds on the freeway every single light on the dashboard suddenly lit up all at once & the vehicle immediately starting loading acceleration & propulsion power. This sudden loss of speed on a active freeway created a immediate severe hazard of a of a high speed for myself & other motorists. • Yes, the electronic faults components have been confirmed & documented by an independent service center (oreilly auto parts veriscan diagnostic report. 05621260920003155). • No the vehicle hasn’t been inspected by the manufacturer, police , or the insurance representatives. • there were no symptoms or warning lamps prior to the failure everything happened instantly while driving on the freeway when the entire dashboard illuminated at once & the power was lost the physical odometer reads exactly 138,764( (note the third party scanner printout manually estimated 152,000 due to a tool discrepancy but the true mileage is 138,764.

NHTSA ID

11769494

Incident

Sep 13, 2026

Hybrid system warning. Safely drop don’t drive. It comes and goes for all hybrids it has the issue

NHTSA ID

11710093

Incident

Nov 27, 2025

The contact owns a 2014 Hyundai Sonata Hybrid. The contact received notification of NHTSA Campaign Number: 23V651000 (Service Brakes, Hydraulic). The contact stated that while driving approximately 30 MPH, the vehicle stalled. The vehicle was not able to be restarted. The vehicle was towed to an independent dealer where it was diagnosed and determined that the battery fuse needed to be replaced. The vehicle was repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 60,000.

NHTSA ID

11570339

Incident

Jun 20, 2023

Mileage

60,000 mi

I WAS DRIVING 20 MPH STRAIGHT DOWN A FLAT RESIDENTAL STREET. A LOUD DASH ALARM SOUNDED IN MY 2014 HYUNDAI SONADA HYBRID. THE DASH DISPLAYED "HYBRID SYSTEM WARNING, SAFELY STOP AND DO NOT DRIVE" . BELOW THE WARNING A YELLOW CAUTION TRIANGLE DISPLAYED. I ATTEMPTED TO GIVE THE VEHICLE GAS, SO I COULD PULL TO THE SIDE OF THE ROAD, BUT THE ENGINE ACTED LIKE IT HAD NO POWER. A BLINKING GREEN "READY" LIGHT WAS DISPLAYED. THE ECO GUIDE DISPLAY WAS MOVING UP AND DOWN FROM THE TOP TO BOTTOM. I TOOK MY FOOT OFF THE GAS PEDAL AND BEGAN BRAKING. THE BRAKES FELT MUSHY AND THE VEHICLE WAS NOT STOPPING. WITHIN A FEW SECONDS THE VEHICLE SHOOK AND WAS THE ENGINE WAS REVVING UP AND DOWN BUT LIKE IT WAS OUT OF GEAR. AFTER APPROXIMATELY 10-15 SECONDS, I LOST THE POWER STEERING AND THE IT WAS ALMOST IMPOSSIBLE TO TURN THE STEERING WHEEL. I AGAIN TRIED BRAKING BUT THE BRAKES JUST FELT MUSHY AND WERE NOT STOPPING THE VEHICLE. I CONTINUED COASTING DOWN THE ROAD AND EVENTUALLY USED THE EMERGENCY BRAKE TO STOP THE VEHICLE. ONCE THE VEHICLE WAS STOPPED I SHUT IT OFF AND ATTEMPTED TO STARTED THE VEHICLE AGAIN. THE GREEN "READY" LIGHT DISPLAYED ON THE DASH AS WELL AS THE WARNING LIGHTS. THE VEHICLE WOULD TURN ON BUT NOT START AGAIN. I PUT THE VEHICLE IN NEUTRAL AND HAD SEVERAL PEOPLE PUSH ME TO THE CURBSIDE. THE BRAKES WERE VERY MUSHY AND ALMOST NON-EXISTENT. I AGAIN USED THE EMERGENCY BRAKE TO STOP IT. I NOTIFIED MY LOCAL HYUNDAI DEALER AND ADVISED I WOULD BE TOWING THE VEHICLE TO THEM. I HAD JUST CAME OFF THE FREEWAY AND HAD THIS HAPPENED A FEW MINUTES EARLIER, I WOULD NOT HAVE BEEN ABLE TO GET TO THE SHOULDER OF THE FREEWAY. I BELIEVE THIS ISSUE COULD HAVE CAUSED SERIOUS INJURY OR DEATH. IT WAS LITERALLY TERRIFYING TO LOSE CONTROL OF THE VEHICLE THE WAY THIS OCCURRED. THERE WAS NO PRIOR WARNING OF AN ISSUE AND NOT ENOUGH TIME TO REACT ONCE THE WARNING SYMBOL WAS DISPLAYED.

NHTSA ID

11217433

Incident

Jun 1, 2019

Mileage

79,684 mi

WHILE VEHICLE IN MOTION, CAR JUST STOP OVERSUDAN WITH A SPOKEN MESSAGE: " HYBRID CELLS VEHICLE IS IN DANGER. CAR WILL STOP"AND AFTER THIS MESSGAE, CAR STALLS WITH NO CONTROL ON THE BREAKS AND STERINGWHEEL.

NHTSA ID

11176211

Incident

Feb 8, 2019

Mileage

100,000 mi

2 TIMES THE ENGINE STALLED IN THE MIDDLE OF AN INTERSECTION DUE TO HYBRID SYSTEM FAILURE. A SIMPLE FUSE FOR THE HYBRID SYSTEM WENT OUT AND TURNED OFF ALL POWER. THE MAIN ISSUE IS THAT THIS IS A VERY DANGEROUS DESIGN FLAW. OTHER HYBRID VEHICLES HAVE A SAFETY FEATURE THAT WHEN THE HYBRID SYSTEM IS NOT WORKING THE GASOLINE ENGINE WILL STILL BE IN FULL OPERATION. EVERYTIME THE ENGINE LIGHT GOES ON IT KILLS THE WHOLE CAR. I GOT STUCK ON AN EXPRESSWAY AND WAS PUT IN A DANGEROUS SITUATION WHEN THIS DID NOT HAVE TO HAPPEN BECAUSE THEY DON'T HAVE TO MAKE THE 2 MOTORS COMPLETELY DEPENDENT ON EACH OTHER. HAVING THE GASOLINE ENGINE CONTINUE TO RUN AND BE ABLE TO POWER THE CAR IN A HYBRID SYSTEM FAILURE WILL SAVE SOMEONE'S LIFE. I AM NOT SURE WHY THIS IS NOT A REQUIREMENT BY LAW TO HAVE THIS SAFETY FEATURE

NHTSA ID

11170917

Incident

Jan 10, 2017

Mileage

99,000 mi

WHILE DRIVING CAR SYSTEM WARNING CAME ON TO" SAFELY STOP AND DO NOT DRIVE". WAS ABLE TO PULL OVER AND STOP CAR. COULD NOT RESTART IT. HAD IT TOWED THEN CHANGED BATTERY WHICH WAS LOW. TRIED TO RESTART AND DID NOT TURN ON UNTIL 3RD TIME STARTING. LET ENGINE RUN FOR ABOUT 10 MIN AND WARNING CAME BACK ON.

NHTSA ID

11165515

Incident

Jan 4, 2019

Mileage

129,759 mi

TL* THE CONTACT OWNS A 2014 HYUNDAI SONATA HYBRID. WHILE ATTEMPTING TO START THE VEHICLE, THE ENGINE FAILED TO START ALTHOUGH THE LIGHTS AND RADIO WERE ACTIVATED. THE VEHICLE ROLLED WHEN PLACED IN GEAR. THE VEHICLE WAS TAKEN TO HYUNDAI OF COLUMBIA (1370 NASHVILLE HWY, COLUMBIA, TN 38401). THE DEALER COULD NOT DIAGNOSE A FAILURE AND RECOMMENDED THAT THE BATTERY BE CHANGED. THE BATTERY WAS CHANGED, BUT THE FAILURE RECURRED. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 36,000.

NHTSA ID

11024655

Incident

Sep 15, 2016

Mileage

36,000 mi

HYBRID SYSTEM WARNING HAS COME ON FOUR TIMES, CAR SHUTS OFF INSTANTLY, THEN THE ENGINE LIGHT COMES ON. THE FIRST TIME WAS ON A CITY STREET, THE SECOND TIME WAS A THE DEALERSHIP WHEN PICKING UP THE CAR AFTER REPAIR, THE THREE TIME WAS IN A PARKING LOT, AND THE FOURTH TIME WAS ON THE INTERSTATE IN HEAVY TRAFFIC. CAR IS NOT SAFE. ASKED FOR A REPLACEMENT WITH NO RESOLUTION.

NHTSA ID

10864489

Incident

Apr 23, 2016

Mileage

27,739 mi

2014 HYUNDAI SONATA HYBRID WAS PARKED OVERNIGHT IN A GARAGE. EARLY IN THE MORNING OF NOVEMBER 24, 2014 IT CAUGHT FIRE RESULTING IN TOTAL LOSS OF THE VEHICLE AND THE HOME. THE OCCUPANTS WERE ABLE TO ESCAPE THE HOME WITHOUT INJURY. *TR

NHTSA ID

10661112

Incident

Nov 24, 2014

AFTER JUST TWO MONTHS OF OWNERSHIP, THIS SONATA HYBRID WOULDN'T START (FOR THE SECOND TIME). HAD IT TOWED TO THE DEALERSHIP. AFTER 15 DAYS (TOTAL SO FAR FOR BOTH INCIDENTS) THE DEALERSHIP STILL HAS NO IDEA WHAT'S WRONG WITH IT OR HOW TO FIX IT. IT SEEMS TO BE SOMETHING RELATED TO THE ELECTRICAL SYSTEM. *TR

NHTSA ID

10627349

Incident

Aug 13, 2014

Mileage

3,113 mi