Hyundai · Known Issues
2018 Hyundai Santa Fe Problems: 9 Known Issues
2018 model year · 990+ owner reports · Updated September 2026
2018 · All trims · All engines
Choose the year and equipment for your written issues and visual request.
2018 model year · 990+ owner reports · Updated September 2026
2018 · All trims · All engines
Choose the year and equipment for your written issues and visual request.
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According to Au7o's analysis of 990+ owner reports, the 2018 Hyundai Santa Fe has 9 documented known issues, with 2 rated critical. The most serious are ABS/HECU Module Electrical Short Causing Engine Compartment Fire and 2.0T Theta II Turbocharger Oil Feed Hose Leak and Turbo Bearing Failure ($250-$2,400 repair). The most commonly reported issue is Premature Alternator Failure with 550 owner reports. Across all issues with published estimates, repair costs range from $50 to $2,400. DIY maintenance guides at au7o.io.
SEAT BELTS:FRONT:ANCHORAGE
Hyundai Motor America (Hyundai) is recalling certain 2023-2025 Hyundai Ioniq 6, 2023-2026 Genesis G90, 2024-2026 Hyundai Santa Fe, and Hyundai Santa Fe Hybrid vehicles. The driver and passenger seat belt anchors may detach.
ELECTRICAL SYSTEM:STARTER ASSEMBLY
Hyundai Motor America (Hyundai) is recalling certain 2024-2025 Santa Fe vehicles. The B+ positive terminal cover on the starter motor assembly may be improperly installed, which can cause an electrical short during a crash.
POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE:SOFTWARE
Hyundai Motor America (Hyundai) is recalling certain 2024 Santa Fe vehicles. A software error in the transmission control unit may result in a vehicle roll away when the vehicle is in PARK.
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According to Au7o's analysis of 990+ owner reports, the 2018 Hyundai Santa Fe has 9 documented issues. The most frequently reported are: ABS/HECU Module Electrical Short Causing Engine Compartment Fire, 2.0T Theta II Turbocharger Oil Feed Hose Leak and Turbo Bearing Failure, Premature Alternator Failure. Of these, 2 are rated critical and should be addressed promptly.
The 2018 Hyundai Santa Fe has 9 known issues documented across 990+ owner reports. 2 issues are rated critical: ABS/HECU Module Electrical Short Causing Engine Compartment Fire and 2.0T Theta II Turbocharger Oil Feed Hose Leak and Turbo Bearing Failure. 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.
Repair costs for known Hyundai Santa Fe issues range from $0 to $2,400, depending on the specific problem and whether you choose DIY or professional repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.
NHTSA recall 22V-056 (Hyundai recall 218) covers certain model-year 2017-2018 Santa Fe Sport and Santa Fe vehicles not equipped with Smart Cruise Control. The ABS module can malfunction internally and cause an electrical short over time. Significant overcurrent can increase the r… Severity: high.
The 2.0L Theta II turbo (G4KH) in the Santa Fe Sport uses a banjo-bolted oil feed hose to the turbocharger center section. The hose assembly and its sealing washers leak, and heat-soak after shutdown cokes the oil inside the small-diameter feed line, restricting flow to the turbo… Repairs typically run $250-$2,400. 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.
ELECTRICAL SYSTEM:WIRING:SWITCHES/KNOBS/BUTTONS
Hyundai Motor America (Hyundai) is recalling certain 2024 Santa Fe and Santa Fe Hybrid vehicles. The overhead console rear sunshade switch knob may not be fully recessed, which can result in unintentional closing of the sunshade. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 118, "Power-Operated Window, Partition and Roof Panel Systems."
BACK OVER PREVENTION:SOFTWARE
Hyundai Motor America (Hyundai) is recalling certain 2024 Santa Fe vehicles. The rearview camera image may be obstructed by a trailer parking assist message. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 111, "Rear Visibility."
+ 12 more recalls. Check all on NHTSA.gov
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Alternators in Santa Fe models fail prematurely, often between 60,000-100,000 miles. The voltage regulator or rectifier diodes fail, causing undercharging, battery drain, and eventually no-start conditions. Some owners report multiple alternator replacements within the vehicle's… Repairs typically run $300-$600. Severity: medium.
The power transfer unit (PTU) on AWD Santa Fe models develops seal leaks, leading to fluid loss and eventual bearing damage. A whining noise from the front of the drivetrain is the first sign. If fluid runs low, the PTU gears can be damaged, requiring expensive replacement. The o… Repairs typically run $300-$2,200. Severity: medium.
Hyundai TSB 23-EM-008H provides inspection and repair guidance for vehicles with engine-oil-consumption concerns. Its parts and labor tables include model-year 2013-2018 Santa Fe Sport and 2019-2020 Santa Fe vehicles with the 2.4-liter GDI engine. The bulletin notes that some oil… Severity: medium.
The Continuous Variable Valve Timing (CVVT) actuator and its associated oil control valve (OCV) on the Santa Fe's Theta II engine can fail, causing rough idle, poor fuel economy, and check engine lights. The OCV gets clogged with sludge from extended oil change intervals, and the… Repairs typically run $300-$900. Severity: medium.
The panoramic sunroof drain tubes on the Santa Fe clog with leaves, pollen, and debris, causing water to overflow the sunroof tray and leak into the cabin. Water typically enters through the headliner area and drips onto the front seats or pools in the rear footwells. Extended wa… Repairs typically run $50-$500. Severity: medium.
Santa Fe (and Santa Fe Sport) panoramic sunroofs have repeatedly shattered spontaneously, with no impact, often described by owners as sounding like a gunshot. Tempered glass tensioned over the large panoramic opening, combined with edge stress and ceramic-frit weakening, fails s… Repairs typically run $0-$1,500. Severity: medium.
Santa Fe paint, especially white/pearl-white and Hyundai's 'Scratch Recovery' self-healing clear coat, is prone to delamination — the clear coat and color coat lose adhesion to the layer beneath and begin peeling, flaking, or bubbling off in sheets, accelerated by UV exposure. It… Repairs typically run $0-$2,000. Severity: low.