According to Au7o's analysis of 6,250+ owner reports, the 2019 Hyundai Tucson has 9 documented known issues, with 5 rated critical. The most serious are Theta II Engine Seizure Due to Connecting Rod Bearing Failure ($0-$7,500 repair), 7-Speed DCT Transmission Shudder and Hesitation ($0-$3,000 repair), ABS Hydraulic Electronic Control Unit (HECU) Solder-Flux Corrosion Causing Engine-Compartment Fire ($0-$0 repair), Missing Engine Immobilizer Allows USB-Cable Theft - Anti-Theft Software Campaign 993/9A5 ($0-$250 repair) and Panoramic Sunroof Spontaneous Cracking ($800-$1,800 repair). The most commonly reported issue is Theta II Engine Seizure Due to Connecting Rod Bearing Failure with 3,200 owner reports. Across all issues with published estimates, repair costs range from $300 to $7,500. DIY maintenance guides at au7o.io.
On the 2011-2019 Hyundai Tucson, the Theta II GDI engine in 2011-2019 Tucson models is susceptible to connecting rod bearing failure caused by manufacturing debris restricting oil flow. This can lead to catastrophic engine seizure, often without warning. Hyundai issued multiple recalls (19V-601, 20V-150) and extended the engine warranty to 15 years/unlimited miles for original owners.
Common Symptoms
Metallic knocking from engine
Engine stalling without warning
Check engine light with P1326 code
Loss of power while driving
Excessive oil consumption
How to Fix
Check VIN for active recalls at NHTSA.gov. Ensure the Knock Sensor Detection System (KSDS) software update has been installed - this monitors for early signs of bearing failure and can put the engine in limp mode. If engine has seized, Hyundai will replace it under recall. Out-of-warranty replacement runs $4,500-7,500. Use full synthetic 0W-20 oil and change every 5,000 miles.
Owner tips & cautions
TipGet the KSDS software update immediately if not already done - it can detect bearing failure early and prevent catastrophic seizure
WarningIf you hear any knocking noise, stop driving immediately. Continued driving can destroy the engine beyond repair
High ConfidenceVerified3,200 owner reportsLast reported by owners Jan 2025Reviewed Feb 2026
Community reported
1,850 owners
On the 2016-2021 Hyundai Tucson 1.6L Turbo, the 7-speed dual-clutch transmission (DCT) paired with the 1.6L turbo engine in Tucson models suffers from shuddering during low-speed maneuvers, hesitation from a stop, and jerky shifts. The dry clutch design is prone to premature wear. Hyundai extended the DCT warranty to 10 years/100,000 miles under a settlement.
Common Symptoms
Shuddering at low speed (1st-2nd gear)
Hesitation when accelerating from stop
Jerky gear changes
Transmission warning light
RPM flaring between shifts
How to Fix
Check if vehicle is covered under Hyundai DCT warranty extension (10yr/100k miles). A TCM software update can improve shift quality. If clutch is worn, the dual-clutch assembly replacement is needed (Hyundai part 41200-2D100). Dealer replacement costs $1,800-3,000. Some owners have had success with the software update alone.
Owner tips & cautions
TipRequest the latest TCM software calibration from the dealer - newer versions significantly improve shift quality
TipLet the DCT warm up for 2-3 minutes before driving aggressively - cold clutch engagement causes most shuddering
WarningIf the transmission warning light comes on, get it inspected immediately - continued driving can damage the clutch beyond software repair
High ConfidenceVerified1,850 owner reportsLast reported by owners Jan 2025Reviewed Feb 2026
On the 2019-2021 Hyundai Tucson, on 2019-2021 Tucson, the Mando-supplied ABS hydraulic electronic control unit can short internally and ignite an engine-bay fire while parked or driving. Supplier analysis found soldering flux residue left on the HECU main controller board; heat and humidity let that residue corrode the board and create an electrical short. NHTSA opened the campaign after 12 documented fires (nine in 2019 models, two in 2020, one in 2021). Hyundai issued a park-outside-away-from-structures warning because the module stays powered with the ignition off. A follow-on equipment recall (21E038) covered the Mando modules themselves. This is an ABS/electrical defect and is unrelated to the engine or fuel system.
Common Symptoms
Burning or melting-plastic smell from the engine bay
Smoke from the engine compartment, sometimes with the vehicle parked and off
ABS and/or ESC warning lights illuminated
Fire originating near the ABS module on the driver-side inner fender
Blown HECU fuse
How to Fix
Free recall remedy under Hyundai campaign 195 / NHTSA 20V543000: dealers install a revised HECU fuse in the engine junction block and, on 2019-2021 vehicles, reflash the Electronic Stability Control software so the module cannot draw enough current to ignite. Some vehicles received a full HECU replacement where corrosion was already present. Until the remedy is performed Hyundai instructs owners to park outside and away from structures. Check the VIN on the NHTSA recall lookup - the fix is free regardless of age or mileage.
On the 2011-2022 Hyundai Tucson, turn-key Tucsons built without an engine immobilizer can be started by stripping the steering column, exposing the ignition cylinder and turning it with a USB cable or similar metal object - no key code is ever checked. The vulnerability, popularized as the 'Kia Challenge' on TikTok, made these vehicles theftable in under 90 seconds and drove insurers in several markets to refuse or surcharge coverage. It is a design omission, not a wear failure: Tucsons from 2011 through 2022 are in the eligible population, and only lower trims with a mechanical key are affected - push-button-start vehicles already had an immobilizer. A class-action settlement valued at more than $200 million resolved owner claims.
Common Symptoms
Vehicle stolen or broken into with the steering column shroud smashed
Ignition cylinder pried out or damaged
Insurer declines or surcharges comprehensive coverage
No immobilizer indicator in the cluster on turn-key models
How to Fix
Free dealer software upgrade under Hyundai Campaigns 993 and 9A5: the fix extends the alarm sound to one minute and, critically, makes the ignition inoperative unless the key fob is present, so forcing the cylinder no longer starts the engine. Installation takes under an hour. Check eligibility by VIN at hyundaiantitheft.com. For the minority of vehicles the software cannot support, the settlement reimburses the purchase of a steering wheel lock, alarm kit or other anti-theft device. Independent of the software, a visible steering wheel lock remains an effective deterrent because the theft method depends on being quick and unobserved.
On the 2016-2025 Hyundai Tucson, the panoramic sunroof glass on the Tucson can crack or shatter spontaneously without impact. The issue has been reported across multiple model years and has generated significant NHTSA complaints. Thermal stress from temperature differentials and body flex during driving are suspected contributing factors. The large glass panel size makes it more susceptible to stress fractures originating from the bonded edges.
Common Symptoms
Loud pop or cracking sound from roof
Spider-web cracks in sunroof glass
Glass shattered while parked
Water leak from cracked sunroof
Glass fragments falling into cabin
How to Fix
Replace the panoramic sunroof glass at the dealer. Hyundai has covered some replacements under goodwill warranty due to the volume of complaints. Document the damage with photos immediately and file an NHTSA complaint to support any warranty claim. Some owners opt to have a protective film applied after replacement, though this does not guarantee prevention.
On the 2016-2023 Hyundai Tucson, rear brake calipers on Tucson models are prone to seizing due to corroded slide pins, causing uneven pad wear, pulling to one side, and premature rotor warping. The issue is worse in northern climates with road salt exposure. Some owners report rear brakes needing replacement at only 20,000-30,000 miles.
Common Symptoms
Vehicle pulls to one side when braking
Uneven brake pad wear
Grinding noise from rear brakes
Hot smell from rear wheels
Premature rear brake wear under 30k miles
How to Fix
Inspect and clean brake caliper slide pins, applying silicone-based caliper grease. If caliper piston is seized, replace the caliper ($100-200 per side). Replace pads and rotors as needed. Preventative maintenance: clean and re-grease slide pins at every brake service. Budget $300-700 per axle for pads, rotors, and caliper if needed.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
Genuine Hyundai left rear brake caliper kit
OEMHyundai 58310-D3A00
left rear caliper replacement after mechanical seizure is confirmed Fitment/availability: Hyundai 58310-D3A00 is cataloged for 2016-2021 Tucson. Confirm VIN, left-rear position, braking package and current supersession; it is not the rig…
right rear caliper replacement after mechanical seizure is confirmed Fitment/availability: Hyundai 58311-D3A00 is cataloged for 2016-2021 Tucson. Confirm VIN, right-rear position, braking package and current supersession; it is not the l…
left rear caliper replacement for the NX4 generation after mechanical seizure is confirmed Fitment/availability: Hyundai 58310-N9A10 is cataloged for 2022-2026 Tucson. Confirm VIN, left-rear position, powertrain/braking package and curre…
right rear caliper replacement for the NX4 generation after mechanical seizure is confirmed Fitment/availability: Hyundai 58311-N9A10 is cataloged for 2022-2026 Tucson. Confirm VIN, right-rear position, powertrain/braking package and cur…
rubber-safe lubricant for serviceable caliper slide pins after cleaning and inspection Fitment/availability: Permatex 20352 is described for metal-to-metal and metal-to-rubber/plastic brake contact points. Use only where the Hyundai brak…
High ConfidenceVerified680 owner reportsLast reported by owners Feb 2025Reviewed Feb 2026
Community reported
520 owners
On the 2010-2021 Hyundai Tucson, the electromagnetic coupling unit for the AWD system in Tucson models can fail, causing loss of rear-wheel drive engagement. Symptoms include grinding noise from the rear, AWD warning light, and reduced traction in slippery conditions. The coupler motor or the coupling assembly itself wears out prematurely.
Common Symptoms
AWD warning light on dashboard
Grinding noise from rear
Loss of traction in snow/rain
Vibration at highway speed
Burning smell from rear
How to Fix
Diagnose with scan tool checking AWD coupling engagement. Replace the rear differential coupling assembly (Hyundai part 47800-2S500 for 2010-2015, 47800-D3500 for 2016-2021). Fluid should be changed every 30,000 miles using Hyundai genuine coupling fluid. Complete assembly replacement runs $800-1,500 at dealer, $500-900 at independent shops.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
Genuine Hyundai 4WD coupling assembly
OEMHyundai 47800-24700
early-production rear coupling replacement after electrical and driveline diagnosis confirms the assembly Fitment/availability: Hyundai 47800-24700 is cataloged for the early LM Tucson branch, with the detailed catalog assigning it to ap…
High ConfidenceVerified520 owner reportsLast reported by owners Feb 2025Reviewed Feb 2026
On the 2010-2021 Hyundai Tucson, the A/C compressor on the Tucson has a higher-than-average failure rate. The compressor clutch can fail first, making a screeching or grinding noise, followed by complete compressor seizure. When the compressor fails internally, metal debris contaminates the entire A/C system, requiring a full system flush. The condenser is also prone to developing leaks from road debris impact.
Common Symptoms
No cold air from A/C
Screeching noise when A/C is on
A/C clutch cycling rapidly
Warm air only from vents
A/C works intermittently
How to Fix
Replace the A/C compressor and receiver/drier. If metal debris is found, the entire system must be flushed including the condenser and evaporator, and the expansion valve replaced. Use only the correct PAG oil weight specified for the Tucson. Have the system evacuated and recharged with the exact R-134a or R-1234yf amount (depending on model year) specified on the underhood label.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
Genuine Hyundai A/C compressor assembly
OEMHyundai 97701-2S500 / 97701-2S500-AS1
Use here only for the 2010-2013 branch unless VIN/original-number lookup explicitly confirms
Confirm VIN, build date, original number and refrigerant label because 97701-2S601 and other production branches also exist; 2S601 was unavailable when checked.
On the 2013-2021 Hyundai Tucson, tucsons finished in Hyundai's three-stage white pearl colors (Quartz White Pearl, Frost White Pearl) shed clear coat in sheets. The failure is delamination: the clear layer never bonded properly to the white base at the factory, typically because the base was sprayed thin, so the clear lifts at an edge and peels away in large patches. Horizontal, sun-exposed panels go first - roof, hood, and the tops of the fenders and liftgate. Owners describe it as peeling skin after a sunburn, and it is progressive rather than a chip-driven cosmetic issue. It affects Tucson alongside Sonata, Elantra and Santa Fe Sport, and has been reported in the US, Canada, Australia and South Africa. Following consumer-affairs news investigations Hyundai extended paint coverage rather than issue a recall - this is not a safety defect, but it destroys resale value. It is distinct from the interior pull-handle trim paint peeling issue.
Common Symptoms
Clear coat lifting and flaking off in large sheets
Roof and hood affected first
Dull chalky patches where clear has gone
Peeling spreads outward from an initial edge or chip
Predominantly on white pearl paint codes
How to Fix
Hyundai extended paint warranty coverage on affected white-painted vehicles from 3 years/36,000 miles to 10 years/unlimited miles from original retail delivery, and the coverage is transferable to subsequent owners. Open a claim through a Hyundai dealer with photographs and the VIN before the 10-year date - an approved claim gets the affected panels stripped and refinished at no charge. Do not wait for the peeling to spread, but do file before the ten-year cutoff. Out of coverage, a proper repair means sanding to the base and repainting each affected panel; spot blending over delamination will lift again.
Hyundai Motor America (Hyundai) is recalling certain 2025 Tucson vehicles. The glove box air bag warning label may be missing. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 208, "Occupant Crash Protection."
Campaign #24V69100013/09/2024
ELECTRICAL SYSTEM:WIRING
Hyundai Motor America (Hyundai) is recalling certain 2025 Tucson and Santa Cruz vehicles. The console extension wiring assembly may be routed improperly, allowing the transmission to be shifted out of Park without applying the brake pedal.
Campaign #24V87700020/11/2024
ENGINE AND ENGINE COOLING:CRITICAL FASTENERS
Hyundai Motor America (Hyundai) is recalling certain 2025-2026 Tucson and Santa Fe vehicles. The connecting rod bolts in the engine may have been improperly tightened, which can cause a loss of drive power and engine damage, possibly resulting in an oil leak.
Campaign #25V54900026/08/2025
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According to Au7o's analysis of 6,250+ owner reports, the 2019 Hyundai Tucson has 9 documented issues. The most frequently reported are: Theta II Engine Seizure Due to Connecting Rod Bearing Failure, 7-Speed DCT Transmission Shudder and Hesitation, ABS Hydraulic Electronic Control Unit (HECU) Solder-Flux Corrosion Causing Engine-Compartment Fire. Of these, 5 are rated critical and should be addressed promptly.
Is the Hyundai Tucson reliable?
The 2019 Hyundai Tucson has 9 known issues documented across 6,250+ owner reports. 5 issues are rated critical: Theta II Engine Seizure Due to Connecting Rod Bearing Failure and 7-Speed DCT Transmission Shudder and Hesitation and ABS Hydraulic Electronic Control Unit (HECU) Solder-Flux Corrosion Causing Engine-Compartment Fire and Missing Engine Immobilizer Allows USB-Cable Theft - Anti-Theft Software Campaign 993/9A5 and Panoramic Sunroof Spontaneous Cracking. 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 Hyundai Tucson problems?
Repair costs for known Hyundai Tucson issues range from $0 to $7,500, depending on the specific problem and whether you choose DIY or professional repair. The most critical issue, Theta II Engine Seizure Due to Connecting Rod Bearing Failure, typically costs $0-$7,500 to repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.
What is the 2011-2019 Hyundai Tucson Theta II Engine Seizure Due to Connecting Rod Bearing Failure?
The Theta II GDI engine in 2011-2019 Tucson models is susceptible to connecting rod bearing failure caused by manufacturing debris restricting oil flow. This can lead to catastrophic engine seizure, often without warning. Hyundai issued multiple recalls (19V-601, 20V-150) and ext… Repairs typically run $0-$7,500. Severity: high.
What is the 2016-2021 Hyundai Tucson 7-Speed DCT Transmission Shudder and Hesitation?
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.
AIR BAGS:SIDE/WINDOW:CURTAIN
Hyundai Motor America (Hyundai) is recalling certain 2025 Tucson, 2025-2026 Santa Cruz, Santa Fe, Santa Fe Hybrid, and 2026 Genesis GV70 vehicles. The side curtain air bags may not have been installed properly, which can cause the air bags not to deploy as intended.
Hyundai Motor America (Hyundai) is recalling certain 2025-2026 Santa Cruz, Tucson, Tucson Hybrid, and Tucson Plug-In Hybrid Electric (PHEV) vehicles. Software in the front cameras may cause the forward collision avoidance system to activate prematurely and unexpectedly apply the brakes.
Enter your VIN at NHTSA.gov to check recalls specific to your vehicle.
The 7-speed dual-clutch transmission (DCT) paired with the 1.6L turbo engine in Tucson models suffers from shuddering during low-speed maneuvers, hesitation from a stop, and jerky shifts. The dry clutch design is prone to premature wear. Hyundai extended the DCT warranty to 10 ye… Repairs typically run $0-$3,000. Severity: high.
What is the 2019-2021 Hyundai Tucson ABS Hydraulic Electronic Control Unit (HECU) Solder-Flux Corrosion Causing Engine-Compartment Fire?
On 2019-2021 Tucson, the Mando-supplied ABS hydraulic electronic control unit can short internally and ignite an engine-bay fire while parked or driving. Supplier analysis found soldering flux residue left on the HECU main controller board; heat and humidity let that residue corr… Repairs typically run $0-$0. Severity: high.
What is the 2011-2022 Hyundai Tucson Missing Engine Immobilizer Allows USB-Cable Theft - Anti-Theft Software Campaign 993/9A5?
Turn-key Tucsons built without an engine immobilizer can be started by stripping the steering column, exposing the ignition cylinder and turning it with a USB cable or similar metal object - no key code is ever checked. The vulnerability, popularized as the 'Kia Challenge' on Tik… Repairs typically run $0-$250. Severity: high.
What is the 2016-2025 Hyundai Tucson Panoramic Sunroof Spontaneous Cracking?
The panoramic sunroof glass on the Tucson can crack or shatter spontaneously without impact. The issue has been reported across multiple model years and has generated significant NHTSA complaints. Thermal stress from temperature differentials and body flex during driving are susp… Repairs typically run $800-$1,800. Severity: high.
What is the 2016-2023 Hyundai Tucson Rear Brake Caliper Seizing / Premature Wear?
Rear brake calipers on Tucson models are prone to seizing due to corroded slide pins, causing uneven pad wear, pulling to one side, and premature rotor warping. The issue is worse in northern climates with road salt exposure. Some owners report rear brakes needing replacement at… Repairs typically run $300-$700. Severity: medium.
What is the 2010-2021 Hyundai Tucson AWD Rear Differential Coupler Failure?
The electromagnetic coupling unit for the AWD system in Tucson models can fail, causing loss of rear-wheel drive engagement. Symptoms include grinding noise from the rear, AWD warning light, and reduced traction in slippery conditions. The coupler motor or the coupling assembly i… Repairs typically run $500-$1,500. Severity: medium.
What is the 2010-2021 Hyundai Tucson A/C Compressor Failure?
The A/C compressor on the Tucson has a higher-than-average failure rate. The compressor clutch can fail first, making a screeching or grinding noise, followed by complete compressor seizure. When the compressor fails internally, metal debris contaminates the entire A/C system, re… Repairs typically run $600-$1,800. Severity: medium.
What is the 2013-2021 Hyundai Tucson Exterior Clear-Coat Delamination on White Pearl Paint - Extended 10-Year Paint Warranty?
Tucsons finished in Hyundai's three-stage white pearl colors (Quartz White Pearl, Frost White Pearl) shed clear coat in sheets. The failure is delamination: the clear layer never bonded properly to the white base at the factory, typically because the base was sprayed thin, so the… Repairs typically run $0-$3,500. Severity: low.
