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Kia · Known Issues

2015 Kia K900 Problems: 6 Known Issues

2015 model year · 155+ owner reports · Updated September 2026

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Issue summary

According to Au7o's analysis of 155+ owner reports, the 2015 Kia K900 has 6 documented known issues, with 2 rated critical. The most serious are Rear Electronic Air Suspension Leak and Compressor Failure ($1,000-$3,500 repair) and K900 Included in Kia's HECU Fire Recall (NHTSA 23V652000). Across all issues with published estimates, repair costs range from $100 to $3,500. DIY maintenance guides at au7o.io.

In This Article

  • K900 Electrical3
  • K900 Suspension1
  • K900 Engine1
  • K900 Transmission1
  • Recalls4
  • FAQ
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In This Article

  • Electrical3
  • Suspension1
  • Engine1
  • Transmission1
  • Recalls4
  • FAQ

All 6 Known Issues

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ALL YEARS202020192018201720162015

On the 2015-2018 Kia K900, the 2015-2018 Kia K900 flagship sedan is covered by NHTSA recall 23V652000. The defect is in the Hydraulic Electronic Control Unit — the antilock brake and traction control module — which may develop an electrical short capable of igniting a fire in the engine compartment. NHTSA states the fire can start while the K900 is being driven or while it is parked, and warns that such a fire increases the risk of injury. Kia's interim instruction to K900 owners was to park the car outside and away from structures until the repair was completed, which is a meaningful inconvenience for a car often kept garaged. The recall is Kia number SC284. Interim notification letters were mailed November 14, 2023, and the letters announcing the available repair went out between March 29 and June 18, 2024. NHTSA's 1,730,192-unit total covers the whole campaign across all the Kia models involved.

Common Symptoms

  • Engine compartment fire, including while parked
  • Smoke from the engine bay while driving

How to Fix

The remedy is a free HECU fuse replacement performed by a Kia dealer. Schedule it under Kia campaign SC284 (NHTSA 23V652000); there is no cost to the owner. Until the K900 has been repaired, follow Kia's guidance and park it outdoors, away from your house or garage. Confirm whether the recall is still outstanding on your VIN at nhtsa.gov/recalls, or contact Kia customer service at 1-800-333-4542.

Research This Issue

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Community Reported
High ConfidenceVerifiedReviewed Aug 2026
Community reported
60 owners

On the 2015-2017 Kia K900, the first-generation K900 (2015-2017) infotainment system suffers from frequent freezing, slow response, and random reboots. The head unit's processing power is inadequate for the system's demands, and the software develops memory leaks over time. The screen may freeze on a particular screen, go black, or reboot mid-navigation. Climate controls that are integrated into the touchscreen become inaccessible during freezes. Kia released software updates but the underlying hardware limitations remain.

Common Symptoms

  • Touchscreen frozen and unresponsive
  • System rebooting randomly during driving
  • Slow response to touch inputs (5+ seconds)
  • Navigation freezing or showing incorrect position
  • Audio cutting out during phone calls

How to Fix

Visit the Kia dealer for the latest infotainment software update. A hard reset (hold power button for 10 seconds) temporarily resolves freezes. If software updates don't help, the head unit may need replacement. Some owners install aftermarket Android Auto/CarPlay head units, though this requires custom wiring for the K900-specific steering wheel controls and climate integration.

Owner tips & cautions

  • TipHold the power/volume knob for 10 seconds to force a system reboot — this clears the frozen state temporarily
  • TipVisit the dealer for the latest map and software update — Kia has released several updates that improve system stability
  • TipDisconnect the battery for 5 minutes once a year to perform a full system reset — this clears accumulated memory leaks
Typical repair cost:$0 - $1,500

Research This Issue

Based on 60 owner reports

GoogleRedditYouTubeNHTSA
Community Reported
Low Confidence60 owner reportsLast reported by owners Mar 2026Reviewed Mar 2026

On the 2015-2020 Kia K900, individual LED elements in the DRL strip fail, creating a partially lit or flickering appearance. The LED modules are integrated into the headlight assembly, making individual LED repair impractical.

Common Symptoms

  • Partial DRL illumination
  • Flickering DRL strip
  • DRL warning on dashboard
  • One side dimmer than other

How to Fix

Replace headlight assembly containing the failed LED DRL module. Aftermarket LED driver boards are available for 2015-2018 models as a repair alternative. Check for water intrusion in headlight housing which accelerates failure.

What you need to fix it

Only diagnosis- and fitment-reviewed repair parts are linked here.

  • Genuine Kia 92101-3T520 left LED headlamp assembly
    OEMKia 92101-3T520

    Replace a confirmed internally failed left LED headlamp/DRL assembly Fitment/availability: 2015-2017 Kia K900, left side, factory LED headlamp only; confirm VIN, production date, option code and current EPC. Not the HID-without-LED lamp …

    Kia OEM Parts Online
  • Genuine Kia 92102-3T520 right LED headlamp assembly
    OEMKia 92102-3T520

    Replace a confirmed internally failed right LED headlamp/DRL assembly Fitment/availability: 2015-2017 Kia K900, right side, factory LED headlamp only; confirm VIN, production date, option code and current EPC. Not the HID-without-LED lam…

    Kia OEM Parts Online

As an Amazon Associate, we earn from qualifying purchases; other part links may also earn au7o a commission. Confirm fitment by VIN before buying.

Typical repair cost:$200 - $800

Research This Issue

GoogleRedditYouTubeNHTSA
Community Reported
Medium Confidence

On the 2015-2020 Kia K900, the K900 flagship sedan uses rear electronic air suspension for its luxury ride. The air springs develop leaks at the rubber bladder and crimped fitting areas after 4-6 years. The compressor overworks to compensate for leaks and eventually burns out. The K900's limited production volume means replacement parts are expensive and sometimes back-ordered. The vehicle sags at the rear when parked, with the compressor running audibly from the trunk area.

This issue also affects: Genesis G70

Common Symptoms

  • Rear end sagging when parked overnight
  • Air compressor running frequently (humming from trunk)
  • Suspension warning light illuminated
  • Harsh ride quality over bumps
  • Vehicle sitting unevenly side to side

How to Fix

Replace both rear air springs together and the compressor if it has been running excessively. Arnott and Continental (OEM supplier) make replacement air springs. An air suspension conversion to coil springs is possible but no dedicated kit exists for the K900 due to low production volume — a custom setup using compatible strut dimensions is required.

Owner tips & cautions

  • TipReplace both rear air springs at the same time — when one leaks, the other is the same age and will follow shortly
  • WarningDo not drive with the rear suspension bottomed out — the exhaust and fuel tank can contact the road surface, creating a safety hazard
Typical repair cost:$1,000 - $3,500

Research This Issue

Based on 45 owner reports

GoogleRedditYouTubeNHTSA
Community Reported
Low Confidence45 owner reportsLast reported by owners Mar 2026Reviewed Mar 2026
Community reported
50 owners

On the 2015-2017 Kia K900 5.0L Tau GDI V8, the 5.0L Tau GDI V8 in the first-generation K900 can develop timing chain tensioner rattle on cold start and GDI fuel injector failures. The hydraulic tensioners bleed down overnight, causing chain slack and rattle for 1-5 seconds at startup. The GDI piezoelectric fuel injectors can develop carbon deposits on the tips that cause uneven spray patterns, misfires, and rough idle. The combination of timing chain noise and injector-related misfires can be alarming on a luxury flagship vehicle.

This issue also affects: Genesis G70, Genesis G90, Genesis GV80

Common Symptoms

  • Rattling noise on cold start for 1-5 seconds
  • Rough idle with intermittent misfires
  • Check engine light with misfire codes
  • Reduced fuel economy
  • Hesitation during acceleration from idle

How to Fix

For timing chain rattle, change oil every 5,000 miles with 5W-30 full synthetic (Mobil 1, Pennzoil Platinum). If rattle persists beyond 5 seconds, replace timing chain tensioners. For injector issues, use a GDI-specific fuel system cleaner (Liqui Moly GDI Cleaner) every 10,000 miles. Severely coked injectors require removal and ultrasonic cleaning ($50/injector) or replacement ($150-250 each).

Owner tips & cautions

  • TipUse 5W-30 full synthetic oil and change every 5,000 miles — the Tau V8 GDI system dilutes oil with fuel, so frequent changes protect the timing chain tensioners
  • WarningIf cold start rattle lasts more than 5 seconds, have timing chain tensioners inspected — prolonged chain slack can jump teeth on the interference engine
Typical repair cost:$100 - $2,500

Research This Issue

Based on 50 owner reports

GoogleRedditYouTubeNHTSA
Community Reported
Low Confidence50 owner reportsLast reported by owners Mar 2026Reviewed Mar 2026

On the 2015-2020 Kia K900, the 8-speed automatic transmission produces a noticeably harsh 2-3 upshift during gentle acceleration. The torque converter lockup strategy and shift calibration contribute to the harsh engagement. TSB available for transmission software reflash.

Common Symptoms

  • Hard shift between 2nd and 3rd gear
  • Jerk during light acceleration
  • Transmission clunk at low speed
  • Shift harshness worse when cold

How to Fix

Have dealer perform transmission control module software update (TSB). Drain and refill transmission with Kia SP-IV RR ATF. If harshness persists after reflash, valve body replacement may be necessary.

What you need to fix it

Only diagnosis- and fitment-reviewed repair parts are linked here.

  • Genuine Kia 46313-4E702 revised 35R solenoid valve
    OEMKia 46313-4E702

    Install the revised green 35R solenoid required by Kia TRA096 Fitment/availability: Only a Kia K900 that matches TSB TRA096: Tau 5.0L GDI, A8LR1 shift-by-wire 8AT, affected January 1-September 25 2014 production and confirmed by VIN/ROM ID.

    KiaPartsNow
  • Genuine Kia 46313-4E602 revised 4-and-overdrive solenoid valve
    OEMKia 46313-4E602

    Install the revised blue 4&OD solenoid required together with the 35R valve by Kia TRA096 Fitment/availability: Only a Kia K900 that matches TSB TRA096: Tau 5.0L GDI, A8LR1 shift-by-wire 8AT, affected January 1-September 25 2014 producti…

    KiaPartsNow
  • Genuine Kia UM014-CH065 SP-IV-RR automatic transmission fluid
    OEMKia UM014-CH065

    Confirm quantity and current service inf

    Kia.Parts

As an Amazon Associate, we earn from qualifying purchases; other part links may also earn au7o a commission. Confirm fitment by VIN before buying.

Typical repair cost:$100 - $500

Research This Issue

GoogleRedditYouTubeNHTSA
Community Reported
Medium Confidence
NHTSA Recalls4 recalls

ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER:HOSES/PLUMBING

Kia America, Inc. (Kia) is recalling certain 2019-2020 K900, and 2018-2023 Stinger vehicles equipped with a 3.3-liter turbo gasoline direct injection engine. The left turbocharger oil feed pipe and hose assembly may deteriorate and leak oil.

Campaign #24V16900001/03/2024

SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP:CONTROL UNIT/MODULE

Kia Motors America (Kia) is recalling certain 2016-2018 K900 and 2014-2016 Sportage vehicles. The Hydraulic Electronic Control Unit (HECU) module could malfunction and cause an electrical short, which could result in an engine compartment fire.

Campaign #22V05100002/02/2022

SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP:CONTROL UNIT/MODULE

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.

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Frequently Asked Questions

What are the most common Kia K900 problems?

According to Au7o's analysis of 155+ owner reports, the 2015 Kia K900 has 6 documented issues. The most frequently reported are: Rear Electronic Air Suspension Leak and Compressor Failure, K900 Included in Kia's HECU Fire Recall (NHTSA 23V652000), Infotainment System Freezing and Rebooting. Of these, 2 are rated critical and should be addressed promptly.

Is the Kia K900 reliable?

The 2015 Kia K900 has 6 known issues documented across 155+ owner reports. 2 issues are rated critical: Rear Electronic Air Suspension Leak and Compressor Failure and K900 Included in Kia's HECU Fire Recall (NHTSA 23V652000). Prospective buyers should inspect for these issues and factor potential repair costs into their purchase decision. Regular maintenance following the manufacturer's schedule helps prevent many common problems.

How much does it cost to fix common Kia K900 problems?

Repair costs for known Kia K900 issues range from $0 to $3,500, depending on the specific problem and whether you choose DIY or professional repair. The most critical issue, Rear Electronic Air Suspension Leak and Compressor Failure, typically costs $1,000-$3,500 to repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.

What is the 2015-2020 Kia K900 Rear Electronic Air Suspension Leak and Compressor Failure?

The K900 flagship sedan uses rear electronic air suspension for its luxury ride. The air springs develop leaks at the rubber bladder and crimped fitting areas after 4-6 years. The compressor overworks to compensate for leaks and eventually burns out. The K900's limited production… Repairs typically run $1,000-$3,500. Severity: high.

What is the 2015-2018 Kia K900 K900 Included in Kia's HECU Fire Recall (NHTSA 23V652000)?

The 2015-2018 Kia K900 flagship sedan is covered by NHTSA recall 23V652000. The defect is in the Hydraulic Electronic Control Unit — the antilock brake and traction control module — which may develop an electrical short capable of igniting a fire in the engine compartment. NHTSA… Severity: high.

Content on this page was compiled with AI assistance using NHTSA complaints, TSBs, owner reports, and public automotive data. While we strive for accuracy, this information may contain errors. Always verify repair procedures and specifications with your vehicle's service manual or a qualified mechanic.

Data sourced from 155+ owner reports, NHTSA recalls, TSBs, and automotive forums.

Campaign #23V65200025/09/2023

EXTERIOR LIGHTING:HEADLIGHTS

Kia Motors America (Kia) is recalling certain model year 2015-2016 K900 vehicles manufactured December 18, 2013 to January 11, 2016 and equipped with LED headlights. In the affected vehicles, when using the multi-function light switch in "AUTO" mode, electrical resistance may build in the switch and result in the headlights flickering or turning off when driving.

Campaign #16V21000012/04/2016

Enter your VIN at NHTSA.gov to check recalls specific to your vehicle.

What is the 2015-2017 Kia K900 Infotainment System Freezing and Rebooting?

The first-generation K900 (2015-2017) infotainment system suffers from frequent freezing, slow response, and random reboots. The head unit's processing power is inadequate for the system's demands, and the software develops memory leaks over time. The screen may freeze on a parti… Repairs typically run $0-$1,500. Severity: medium.

What is the 2015-2017 Kia K900 5.0L Tau V8 Timing Chain and GDI Injector Issues?

The 5.0L Tau GDI V8 in the first-generation K900 can develop timing chain tensioner rattle on cold start and GDI fuel injector failures. The hydraulic tensioners bleed down overnight, causing chain slack and rattle for 1-5 seconds at startup. The GDI piezoelectric fuel injectors… Repairs typically run $100-$2,500. Severity: medium.

What is the 2015-2020 Kia K900 Harsh 2-3 Upshift Under Light Throttle?

The 8-speed automatic transmission produces a noticeably harsh 2-3 upshift during gentle acceleration. The torque converter lockup strategy and shift calibration contribute to the harsh engagement. TSB available for transmission software reflash. Repairs typically run $100-$500. Severity: medium.

What is the 2015-2020 Kia K900 LED Daytime Running Light Module Burnout?

Individual LED elements in the DRL strip fail, creating a partially lit or flickering appearance. The LED modules are integrated into the headlight assembly, making individual LED repair impractical. Repairs typically run $200-$800. Severity: low.