Problems · by component

2013 Kia Optima service brakes, hydraulic problems

53 owner complaints to NHTSA about the 2013 Kia Optima cite service brakes, hydraulic, 4% of all 1,387 complaints for this model year. NHTSA also lists 3 recalls on this component.

Complaints
53
4% of all complaints
Crashes
0
Reported by owners
Fires
8
Reported by owners
Injuries
1
Reported by owners
01 —Owner reports

What owners say about the service brakes, hydraulic

Verbatim from NHTSA complaints, newest first
“The contact owns a 2013 Kia Optima. The contact stated that the vehicle was unable to start due to the battery being drained from the Hydraulic Electronic Control Unit (HECU) remaining on while the vehicle was turned off. After recharging the battery, the HECU made a buzzing sound while the battery was no longer charging. Additionally, the vehicle went into LIMP Mode while driving, and the ABS, traction control, and several other unknown warning lights were illuminated. A burning odor was inside the vehicle. The contact was concerned about a fire risk. The vehicle was taken to the dealer and determined that the HECU had failed and needed to be replaced. The dealer requested maintenance records for the vehicle. The manufacturer was notified of the failure by phone, and a case was filed. The failure mileage was approximately 111,000.”
Owner complaint to NHTSAFiled Sep 18, 2026Service brakes, hydraulicODI 11765377
“The contact owned a 2013 Kia Optima. The contact stated that while driving at an undisclosed speed, the front of the vehicle started excessively smoking and caught fire. No warning lights illuminated. The fire was extinguished by the local fire department, and a fire report was filed. A police report was not filed. The contact received notification of NHTSA Campaign Number: 23V652000 (Service Brakes, Hydraulic). The dealer was not contacted. The vehicle was not diagnosed or repaired. The vehicle was destroyed. The manufacturer was made aware of the failure via customer care support since no representative was reached via the phone line. The approximate failure mileage was 179,000.”
Owner complaint to NHTSAFiled Apr 6, 2026Service brakes, hydraulicFire reportedODI 11729515
“The contact owns a 2013 Kia Optima. The contact stated that while driving 75 MPH, the vehicle lost motive power. The accelerator pedal was depressed; however, the vehicle eventually stalled on the side of the road. The key, battery, oil, and engine warning lights were illuminated. There was an abnormal ticking sound coming from the vehicle. The contact stated the failure was related to NHTSA Campaign Number: 23V652000 (Service Brakes, Hydraulic). The vehicle was towed to an independent mechanic, where it was determined that the engine had seized. The engine failed to turn over. The mechanic had previously performed a routine oil change. The vehicle was towed to the local dealer, where it was diagnosed with low voltage. The spark plugs were checked, there were no oil leaks, and the vehicle was diagnosed with catastrophic engine failure. The vehicle was not repaired. The manufacturer was contacted, but no assistance was provided. The failure mileage was approximately 111,862.”
Owner complaint to NHTSAFiled Mar 12, 2026Service brakes, hydraulic, Electrical system, EngineODI 11723905
“The contact owned a 2013 Kia Optima. The contact stated that while driving the vehicle, the contact became aware of black smoke coming from the floorboard with a burning plastic odor, and the battery warning light illuminated. The contact called her husband and was informed to exit the vehicle. The contact exited the vehicle and seconds later the vehicle exploded. The front of the vehicle blew up onto the windshield and the steering wheel detached and struck the driver’s side seat. The fire was extinguished by the Fulton County Fire Department. A Fire Report and Police Report were filed; however, the reports were not yet provided to the vehicle owner. The contact experienced severe emotional distress. The contact stated due to the emotional distress of the fire, she suffered a miscarriage from the stress and had scratches from having to jump out of the window. There was no medical assistance sought. Several personal items inside the vehicle were also lost due to the fire and additionally, the contact lost employment due to the fire. The VIN was included in NHTSA Campaign Number: 23V652000 (SERVICE BRAKES, HYDRAULIC); however, the vehicle had not been repaired…”
Owner complaint to NHTSAFiled Feb 20, 2026Service brakes, hydraulic, EngineFire reportedODI 11719465
“The contact owned a 2013 Kia Optima. The contact stated that while his niece was driving the vehicle at 65 MPH, a strong fuel odor began to emit from the vehicle without warning. The vehicle then began to violently shake as the contact's niece began to exit the highway. Upon pulling over and exiting the vehicle, black smoke began to emit from the vehicle as both police and fire officials were in the vehicle's vicinity and witnessed the fire. As the vehicle quickly became engulfed in flames, the fire department quickly arrived at the scene and extinguished the fire. No injuries were reported, and a police report was filed. The vehicle was towed to the niece's home, where it remained in her possession. Upon investigation, the contact discovered that the vehicle was included in NHTSA Campaign Number: 23V652000(Service Brakes, Hydraulics). The manufacturer was notified of the failure, and an investigator was scheduled to visit the niece's home and inspect the vehicle; the investigator never arrived, and the vehicle had yet to be inspected. The vehicle was destroyed as a result of the fire. The failure mileage was approximately 160,000.”
Owner complaint to NHTSAFiled Feb 9, 2026Service brakes, hydraulicFire reportedODI 11716694
“The contact owns a 2013 Kia Optima. The contact stated that while driving 70 MPH, the speedometer started malfunctioning, and the check engine warning light was flashing. There was an abnormal burning odor, and there was smoke coming from under the hood. The contact pulled over to the side of the road and allowed the vehicle to cool down for an hour. While attempting to restart the vehicle, several unknown warning lights were flashing, and the vehicle failed to restart. The contact was picked up by her daughter, and the vehicle was later towed to the dealer to be diagnosed. The dealer later informed the contact that the warning lights had turned off. Additionally, the dealer informed the contact that the tires, the oil, and the oil filter needed to be replaced. The contact declined to pay for the parts replacement because the oil and the oil filter had been replaced two weeks prior to the failure. The dealer informed the contact that the vehicle was ready for pick up. The contact stated that after a family member picked up the vehicle, the failure recurred while driving, and the vehicle stalled. The driver was able to pull into a parking lot. The contact stated…”
Owner complaint to NHTSAFiled Jan 12, 2026Service brakes, hydraulic, Engine and engine coolingODI 11710466

Showing 6 of 53 reports. Read every report on NHTSA.gov.

Data from NHTSA Complaints API (owner reports, unverified) · synced Oct 30, 2026NHTSA vehicle page
02 —Related recalls

3 recalls on this component

Service brakes

Park outsideRemedy pending

Kia America, Inc. (Kia) is recalling certain 2010-2019 Borrego, 2014-2016 Cadenza, 2010-2013 Forte, Forte Koup, Sportage, 2015-2018 K900, 2011-2015 Optima, 2011-2013 Optima Hybrid, Soul, 2012-2017 Rio, 2011-2014 Sorento, and 2010-2011 Rondo vehicles. The Hydraulic Electronic Control Unit (HECU) may experience an electrical short, which can result in an engine compartment fire while parked or driving.

Service brakes, hydraulicReported Sep 25, 2023NHTSA 23V652000

Service brakes

Park outsideFree remedy

Kia Motors America (Kia) is recalling certain 2013-2015 Optima and 2014-2015 Sorento vehicles previously recalled under recall 20V-519. Brake fluid may leak inside the Hydraulic Electronic Control Unit (HECU), possibly resulting in an electrical short.

Service brakes, hydraulicReported May 10, 2021NHTSA 21V331000

Service brakes

Park outsideFree remedy

Kia Motors America (Kia) is recalling certain 2013-2015 Optima and 2014-2015 Sorento vehicles. Brake fluid may leak inside the Hydraulic Electronic Control Unit (HECU), possibly resulting in an electrical short.

Service brakes, hydraulicReported Aug 27, 2020NHTSA 20V519000
Data from NHTSA Recalls API · synced Oct 30, 2026

Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.