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2018 Kia Sedona Maintenance Schedule

Manufacturer-recommended service intervals for the Service Reminder and open recall alerts for your 2018 Kia Sedona.

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Recalls3Full scheduleKnown issues6

How Kia schedules service: Service Reminder

Kia uses Hyundai Motor Group's powertrains, so service intervals mirror Hyundai's. Kia Promise covers the first 3 years / 36,000 miles of complimentary maintenance. Kia owners with the Theta II 2.0L/2.4L (Optima, Sorento, Sportage 2011-2019) should adhere strictly to oil intervals due to known oil-consumption issues in Kia TSBs.

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3 Open Recalls

Source: NHTSA

STRUCTURE:BODY:DOOR

Campaign #18V338000 ยท May 23, 2018

Issue: Kia Motors America (Kia) is recalling certain 2015-2018 Kia Sedona vehicles equipped with a power sliding door (PSD). The PSD may not auto-reverse when its closing is obstructed.

Risk: If the door closes on an occupant, there is an increased risk of an injury.

Fix: Kia will notify owners, and dealers will reprogram the PSD module software, free of charge. The recall began on June 18, 2018. Owners may contact Kia customer service at 1-800-333-4542. Kia's number for this recall is SC164.

AIR BAGS

Campaign #22V031000 ยท Jan 25, 2022

Issue: Kia Motors America (Kia) is recalling certain 2017-2019 Sedona, Soul, Soul EV, 2017-2018 Forte, and 2017 Forte Koup vehicles. The Air Bag Control Unit (ACU) cover may contact a memory chip on the printed circuit board and damage the electrical circuit. Circuit damage may result in deactivated air bags that will not deploy in a crash.

Risk: Air bags that do not deploy as intended can increase the risk of injury in a crash.

Fix: Dealers will inspect the ACU, and either update the software or replace the unit, as necessary. Repairs will be performed free of charge. Owner notification letters were mailed March 21, 2022. Owners may contact Kia customer service at 1-800-333-4542. Kia's number for this recall is SC226.

ELECTRICAL SYSTEM:WIRING

Campaign #19V109000 ยท Feb 19, 2019

Issue: Kia Motors America (Kia) is recalling certain 2015-2018 Sedona vehicles equipped with manually-adjusted front passenger seats. Over time, the Occupant Detection System (ODS) wiring harness located underneath the front passenger seat may break from the seat being occupied.

Risk: If a child is in a child seat in the front seat, a broken ODS wiring harness will not prevent the front passenger air bag from deploying in the event of a crash, increasing the risk of injury to the child.

Fix: Kia will notify owners, and dealers will remove the wire harness clip to prevent the wiring harness from breaking. If the harness is found damaged, the front passenger seat cushion will be replaced. These repairs will be performed free of charge. The recall began March 19, 2019. Owners may contact Kia customer service at 1-800-333-4542. Kia's number for this recall is SC175.

Recall data refreshed Jul 26, 2026.

Essential maintenance

Critical for safety and preventing major damage

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Engine Oil & Filter

Every 3,750 mi

Severe service: every 3,750 miles. Normal: 7,500 miles. Theta II 2.0L/2.4L on Optima, Sorento, Sportage (2011-2019): full synthetic only, never extend.

Estimated cost โ€” typical U.S. ranges

Dealer

~$120โ€“$160

Shop

~$85โ€“$115

DIY

~$25โ€“$55

Full synthetic costs more than conventional. 5-quart 0W-20 + filter is the typical bill.

๐Ÿ”„

Tire Rotation

Every 7,500 mi

Rotate tires every 7,500 miles. Telluride and Sorento AWD owners benefit from rotation every 5,000 miles to prevent uneven wear.

Estimated cost โ€” typical U.S. ranges

Dealer

~$85

Shop

~$60

DIY

Free

Often free at the shop where you bought the tires โ€” worth asking before paying.

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Brake Inspection

Every 7,500 mi

Inspect brake pads and rotors every 7,500 miles. Forte and Soul front pads typically last 40,000-55,000 miles.

Estimated cost โ€” typical U.S. ranges

Dealer

~$85

Shop

~$60

DIY

Free

Most shops do this free as a courtesy with any service. Don't pay separately if you can avoid it.

๐Ÿงช

Brake Fluid

Every 30,000 mi

Replace DOT 3 brake fluid every 30,000 miles or 24 months. Required for ABS and ESC pump longevity.

Estimated cost โ€” typical U.S. ranges

Dealer

~$180โ€“$200

Shop

~$125โ€“$140

DIY

~$10โ€“$25

DOT 3 or 4 โ€” match the cap. Vacuum bleeders make this a one-person DIY.

Important maintenance

Keeps your vehicle running smoothly and efficiently

๐Ÿ’จ

Engine Air Filter

Every 30,000 mi

Replace engine air filter every 30,000 miles. Severe or dusty conditions: 15,000 miles.

Estimated cost โ€” typical U.S. ranges

Dealer

~$60โ€“$95

Shop

~$45โ€“$70

DIY

~$15โ€“$40

5-minute job on most cars; the airbox lid usually has clips, no tools needed.

โš™๏ธ

Automatic Transmission Fluid

Every 30,000 mi

Severe service: every 30,000 miles. Normal: 60,000 miles. Use Kia SP-IV โ€” same as Hyundai.

Estimated cost โ€” typical U.S. ranges

Dealer

~$330โ€“$500

Shop

~$235โ€“$355

DIY

~$60โ€“$180

Some sealed transmissions have no dipstick โ€” fill is precise and best left to a shop. Many drivers can still DIY drain-and-fill.

โšก

Spark Plugs

Every 105,000 mi

Iridium-tipped plugs rated 105,000 miles on most Kia engines. 1.6T (Forte GT, Soul Turbo): 60,000 miles. 3.5L Lambda II V6 (Telluride, Sorento): 105,000 miles.

Estimated cost โ€” typical U.S. ranges

Dealer

~$285โ€“$390

Shop

~$200โ€“$275

DIY

~$25โ€“$100

Iridium plugs cost more but last 100k+ miles. V6/V8 access varies wildly โ€” some are tough.

๐ŸŒก๏ธ

Long-Life Coolant

Every 30,000 mi

Kia Long-Life Coolant (pink, same as Hyundai): first change at 60,000 miles, then every 30,000. Do not mix with green or orange coolant.

Estimated cost โ€” typical U.S. ranges

Dealer

~$285โ€“$330

Shop

~$200โ€“$235

DIY

~$25โ€“$60

Use the manufacturer-specified coolant โ€” wrong color/chemistry can damage the cooling system.

๐Ÿ”ฉ

Transfer Case / Rear Diff (AWD)

Every 60,000 mi

Sportage AWD, Sorento AWD, Telluride AWD: replace transfer case fluid and rear diff fluid every 60,000 miles.

Estimated cost โ€” typical U.S. ranges

Dealer

~$105โ€“$140

Shop

~$75โ€“$100

DIY

~$15โ€“$40

AWD/4WD vehicles only. Easy drain-and-fill on most platforms.

Recommended maintenance

Extends the life of your vehicle and improves comfort

๐ŸŒฌ๏ธ

Cabin Air Filter

Every 15,000 mi

Replace cabin air filter every 15,000 miles. Located behind the glove box on Optima, Forte, and Sportage; behind the dashboard panel on Telluride.

Estimated cost โ€” typical U.S. ranges

Dealer

~$60โ€“$95

Shop

~$45โ€“$70

DIY

~$15โ€“$40

Usually behind the glovebox. Shops charge labor for a 10-minute job โ€” easy DIY win.

Known issues for this vehicle

What drivers and federal regulators have officially reported about the 2018 Kia Sedona.

Reported to NHTSA

Engine failure and seizure while driving

ENGINE

16 NHTSA complaints ยท 2023-03 โ†’ 2026-03

โ€œWhile driving on the interstate, about an hour into the trip, there was a banging/tinging sound coming from the front of the van. Immediately the van was pulled off the road to assess the situation as there were NO WARNING MESSAGES OR LIGHTS that came on to alert of any problemโ€
โ€” Owner report, NHTSA ODI #11675165
โ€œWhile driving at highway speed all the dashboard lights came on and the engine instantly quit. I managed to pull the wheel and coast to the side of the road, which was difficult with no power steeringโ€
โ€” Owner report, NHTSA ODI #11608210
โ€œThe vehicle is a 2018 Kia Sedona with approximately 122,000 miles that experienced a catastrophic engine failure resulting in complete engine seizure. The failure has been identified by an independent mechanic as a rod bearing issueโ€
โ€” Owner report, NHTSA ODI #11727513

Read all complaints on NHTSA โ†’

Power sliding door and liftgate operation faults

ELECTRICAL SYSTEM

4 NHTSA complaints ยท 2019-05 โ†’ 2025-09

โ€œTHE CONTACT STATED THAT THE POWER SLIDING DOOR SENOR FAILED CAUSING THE CONTACT TO GET TRAPPED BETWEEN THE DOOR. THE FAILURE HAPPENED INTERMITTENTLYโ€
โ€” Owner report, NHTSA ODI #11208350
โ€œTHE CONTACT STATED THAT THE PASSENGER SIDE SLIDING DOOR WOULD OPEN AND CLOSE ON ITS OWNโ€
โ€” Owner report, NHTSA ODI #11277470
โ€œThe contact stated that while the vehicle was parked in the street, the smart lift automatically engaged and the contact was tramped in between her vehicle and another parked vehicle. The lift does not disengage when sensing a person when lifting or descendingโ€
โ€” Owner report, NHTSA ODI #11460448

Read all complaints on NHTSA โ†’

Kumho tire tread separation

TIRES

3 NHTSA complaints ยท 2019-08 โ†’ 2021-04

โ€œWHILE DRIVING 60 MPH, THE STEERING WHEEL SHOOK VIOLENTLY WITHOUT WARNING. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC WHO DIAGNOSED THAT THE TIRE TREAD SEPARATEDโ€
โ€” Owner report, NHTSA ODI #11241300
โ€œ2 OF THE 4 KUMHO CRUGEN PREMIUM 235/60R18 TIRES ON OUR KIA SEDONA HAVE HAD TREAD SEPARATION. 21,000 MILES ON THE CAR SO FAR. CAR WAS IN MOTION AND EXPERIENCED RATTLING AND SHAKING EACH TIMEโ€
โ€” Owner report, NHTSA ODI #11361133

Read all complaints on NHTSA โ†’

Engine compartment fire

ENGINE

4 NHTSA complaints ยท 2022-06 โ†’ 2025-09

โ€œ10 mile drive to town. On return home, smoke began pouring from the engine compartment. Within 3-4 minutes flames came from grill area, and within 15 minutes entire car was engulfed in flamesโ€
โ€” Owner report, NHTSA ODI #11595189
โ€œThere was a fire under my minivan as my husband was driving it, creating smoke and flames. He lost power to the van and had to coast to the right side of the highway where he came to a stop with the flames occurringโ€
โ€” Owner report, NHTSA ODI #11687226
โ€œOur 2018 Kia Sedona SXL caught on fire in the engine compartment while driving. IT almost killed my wife (driver) and my 4 year old son. Car had been driven only 2 blocks after picking up my son from daycareโ€
โ€” Owner report, NHTSA ODI #11471701

Read all complaints on NHTSA โ†’

Air bag warning light and non-deployment

AIR BAGS

6 NHTSA complaints ยท 2019-03 โ†’ 2025-10

โ€œSince shortly after buying the van we have been getting airbag warning lights. Just about every part of the system has been replaced, but the airbag light still comes back onโ€
โ€” Owner report, NHTSA ODI #11602819
โ€œThe contact stated that the air bag warning light was illuminated. The vehicle was taken to the local dealer where it was diagnosed and an unknown software was updated however, the vehicle was not repairedโ€
โ€” Owner report, NHTSA ODI #11460521
โ€œDuring the accident, the Air Bags did not employ. The Passenger fell forward and broke the windshield with her head, leading to a Concucussionโ€
โ€” Owner report, NHTSA ODI #11506536

Read all complaints on NHTSA โ†’

Intermittent no-start and battery discharge

ELECTRICAL SYSTEM

3 NHTSA complaints ยท 2020-08 โ†’ 2026-07

โ€œVEHICLE DIES IF NOT DRIVEN FOR 5-6 DAYS. I BELIEVE THIS IS RELATED TO AN ELECTRICAL ISSUE IN THE PASSENGER SIDE SLIDING DOOR AS THIS DOES NOT HAPPEN IF YOU DON'T USE THE SLIDING DOOR. POTENTIALLY RELATED TO RECALL 18V338000โ€
โ€” Owner report, NHTSA ODI #11349652
โ€œThe contact stated that the air bag and the check engine warning lights were illuminated. The vehicle failed to start and was towed to the dealer, where it was diagnosed with alternator failure; however, the battery was replacedโ€
โ€” Owner report, NHTSA ODI #11747931
โ€œ2018NKIA SADONA HAVING ISSUES STARTING UP AFTER SITTING OVER NIGHT GET IN TRY TO START NO START BUT LIGHTS ON DASH TURN ON ENGINE NO CRANKโ€
โ€” Owner report, NHTSA ODI #11390707

Read all complaints on NHTSA โ†’

Issues on other model years

  • 2015 Kia Sedona โ†’
  • 2016 Kia Sedona โ†’
  • 2017 Kia Sedona โ†’
  • 2019 Kia Sedona โ†’
  • 2020 Kia Sedona โ†’
  • 2021 Kia Sedona โ†’

Source: NHTSA Office of Defects Investigation (ODI). Complaint data refreshed Jul 31, 2026. Investigation data refreshed Jul 31, 2026.

We display NHTSA's record with attribution; we don't editorialize on what these complaints mean for any specific vehicle.

Typical U.S. ranges. Actual quotes vary by shop, parts choice, and vehicle condition.

How we estimate: Dealer = OEM parts ร— 1.4 + labor ร— $165/hr. Shop = parts + labor ร— $115/hr. DIY = parts only.

This maintenance schedule for the 2018 Kia Sedona reflects Kia's published service intervals and the Service Reminder system. Your actual service needs may vary based on driving conditions, climate, and vehicle usage. Always consult your owner's manual for model-specific recommendations.

Check another vehicle โ†’