2017 Kia Cadenza: check engine light

Filed Mar 11, 2026 · Engine · PA

Check engine was flashing in front of my house in Brookhaven Pa. Took to mechanic around the corner, diagnosed with a blown head gasket & oil in my anti freeze over flow. Internal engine failure. Had towed to Kia dealership in NJ

Filed Jan 6, 2026 · Engine · IL

This vehicle was inherited to me in 2019 from my father who puchased it cash on 10/13/2017. On 4/19/2018 he brought it in for a check engine light which was related to recall sa299 (ELECTRONIC THERMOSTAT). On 7/11/2018 service was performed again. On 3/4/2022 I brought in for check engine light with same recall for ELECTRONIC THERMOSTAT. On 11/10/2025 car showed engine overheating. In fear, I immediately brought to closest mechanic stating same problem, ELECTRONIC THERMOSTAT AND RADIATOR HOSE WHICH GOES HAND IN HAND. Before work began I left voice mails and emails with the service manager of Rohrman Kia in Schaumburg, Il. No one reached out. I spoke with Jim at same location on 11/10/2025 at 4:00 pm who told me it was my responsibility because the part was no longer under warranty. I filed a complaint (24149522) with BBB. on 11/13/2025 after I had to pay my mechanic $1000 to fix problem which obviously is a defect. On 12/3/2025 I spoke with Mike from Kia who said part was no longer under warranty and will not reimburse. I asked him to prove the previous thermostat was installed correctly according to the service action sa 346 and he said they have certified techs and they do not have to prove that to me. I would like Kia to accept responsibility for this part. Also carfax does not show all times Kia replaced that thermostat.

Filed Oct 14, 2025 · Electrical, Engine · TX

Multiple oil, engine/knocking issues. Drove the car unaware of loss of oil ( disguised as water from days rain) no oil light or engine light appeared. When I took to dealer the leak was fixed.Multiple times of loss of oil and only once did it show on dash.I kept taking to dealership for loud knocking and was told it wasn’t reproduced. But fixed a gasket/manifold more than once. overheating of engine when I was driving out driveway. I turned around parked and had it towed to dealership. Stated faulty sensor then was called back & told i needed to pay for the fan wires that kept the engine cool because they had melted in the process.i have had issues with right brake fluid and boot as well. Changed brakes.most of the time It has been loss of oil or engine knocking then needed to rebuild the engine which I had to pay $4000. Im sad and upset that most of the time I have had my car it has been in the shop or having to be parked for a length of time.( avg. 3-20 days) was called back to say it was another issue.Took to another dealer who repaired . had to take in for repeat engine issues and knocking sounds the wasn’t “reproduced” it was clearly heard when manager drove it but service provider said no. So frustrated that I have spend a lot of money for engine issues and haven’t had a chance to enjoy the vehicle, frustrated it is performed less than what I expected.have never taken my car to any other but dealership and kept up with maintenance. the rest was slow to accelerate(even after just picking up from dealership) a lot of knocking .Engine was “rebuilt” and It’s still in the shop today. Driving without oil loss notification.Now radiator hose is swollen/soft at top unsure if oil or water. And I need to pay for hose $400 now another $1000? braking feels unusual after they replaced. I notified KIA customer support/emailed all receipts and return call was told no recalls about a year ago and she would call dealership. Car was at dealership for a while at that time.

Filed Jun 2, 2024 · Engine · IL

A little history, my Cadenza was placed at KIA of Bradley [XXX] 2024, I complained of oil burning, the oil sending unit light staying on and the engine dying. The Kia rep found “THE OIL PRESSURE SENDER INTERNALLY FAULTED, LEAKING OIL INTERNALLY – OIL LEAKING DOWN TO PIGTAIL HARNESS”. The Oil pressure switch and wiring harness lead were replaced. Here lies the problem. During my visit in Feb, I told Kia about the burning oil smell, I provided a video of the smoke coming from the engine and the oil light staying on. I was relying on Kia’s expertise because it’s their product. The complaints I had were about the same issues the KIA Sorento 3.3 L had, considering my Cadenaza has a 3.3 GDI engine also. The Sorento’s engine was recalled. Move forward to [XXX], 2024, I brought my Cadenaza to Kia of Bradley to have my windshield fluid motor checked because only the passenger’s side was spraying fluid, after Kia telling me the car would probably be held for a couple of days I decided to come back later. Here lies the problem, during the visit a Vehicle inspection was supposedly done on my car. Mind you, I have always had oil checks done and regular maintenance done (I have receipts to prove it). [XXX], stated the things that need to be done I had done by another dealer and there was no mention of oil being low for the car nor problem with the Oil sensor unit that was replaced in Feb 2024. Mind you, I never had any low oil engine light come oil or any OIL LEAKS OR COOLANT LEAKS ON THE FLOOR OF MY GARAGE. I figured my OIL AND COOLENT LEVEL WERE FINE, I never gotten any warning lights from the newly replaced Oil sender unit. I took my KIA Cadenza to Firestone in Mokena, IL to service my windshield motor on [XXX]. Firestone performed a basic check of my car that Kia of Bradley performed [XXX], 2024. Firestone found there was no oil in the engine because the engine burned it all and my coolant was burned inside of my engine also. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Nov 21, 2017 · Fuel system · 3,100 miles · NM

Shortly after filling fuel tank a strong raw fuel odor emanated from the left side of the vehicle near the fuel door. The smell was most pronounced outside the vehicle. Initially I thought some fuel had spilled, but the smell lasted several days until the tank was depleted to 1/2 full, and immediately came back upon next fill up. No cel or codes were thrown, and drivability was not affected. Dealer service department initially misdiagnosed problem as clogged fuel vent lines, but on the second visit they appear to have correctly identified the issue as a leaking seal around the high pressure fuel pump atop the vehicle's fuel tank. Dealer invoice notes the fuel pump gasket was "torn apart." (the invoice incorrectly notes the smell was apparent inside the vehicle, not the outside.)