Owners report a wide range of electrical failures in 2017 Tucson models. The most serious allegations involve engine fires—several owners describe flames under the hood, burning smells from the engine bay, and scorched wiring harnesses, often following recall repairs or during normal driving. Multiple owners report their vehicles stalling or losing power on highways without warning lights, sometimes at highway speeds, and some describe the car refusing to turn off or restarting unexpectedly.
Dashboard electrical anomalies are common: all warning lights illuminating simultaneously, speedometer failing to work, instrument cluster going dark mid-drive, and false or random sensor warnings. Owners describe hesitation on acceleration, rough idle, and RPM issues tied to electrical system failures or knock sensor updates that allegedly trap vehicles in limp mode at 45 mph.
Door latches malfunction frequently—rear doors locking owners inside or refusing to open from either side, and front doors requiring extreme force or becoming inoperable from external handles. Window controls fail, sometimes operating one direction only. Push-button start systems occasionally fail to turn engines off.
Backup camera blackouts, radio resets, and Bluetooth/infotainment glitches appear regularly. One owner alleges cyber hacking of the vehicle's systems. Brake light wiring scorches repeatedly; headlights fail frequently. Some owners report multiple bulb burnouts in short timeframes.
Anti-theft concerns emerge: vehicles lacking immobilizers are stolen easily by targeting the steering column, and some describe remote-start or smart-key button failures. One owner reports extreme oil consumption requiring checks every 1,000–3,000 miles despite no visible leaks.
Failure modes owners describe
Engine Fire / Underhood Fire Risk
Multiple owners report flames, smoke, and burning smells from under the hood during normal driving. Some fires occur on highways at speed; others occur shortly after recall repairs. Wiring harnesses show evidence of scorching.
When: During driving, post-recall repairs, at highway speeds
Symptoms owners cite: Flames visible under hood; Smoke from engine bay; Burning smell from hood and cabin; Heat radiating into cabin from dashboard area; Loss of engine power accompanying fire
Repairs/costs cited: Owners cite fire damage to wiring harnesses, burnt components requiring replacement; some reports mention recall 21V727000 (Engine) and electrical system recalls (20V543000) did not prevent fires
Recalls/TSBs owners mention: Recall 20V543000 (Electrical System), Recall 21V727000 (Engine); owners report long wait times (5 months, unknown delays) for recall remedy; some dealers claim no remedy available yet (noted as 2.5+ years without fix)
Engine Stalling / Loss of Power at Highway Speed
Vehicle loses all engine power or stalls without warning while driving on highways or during acceleration, sometimes entering limp mode. No warning lights precede events. Some occur after owners have completed knock sensor recall updates.
When: Highway driving, during acceleration from stops, post-recall service
Symptoms owners cite: Complete loss of engine power; Vehicle stalls at red lights; Engine hesitates on acceleration; Vehicle limited to 45 mph or below after stall; RPM sticking or dropping; Difficulty cranking/turning over
Codes mentioned: P1111 (fuel pump circuit), P1326 (knock sensor, post-recall limp mode)
Repairs/costs cited: Some owners report knock sensor replacements and software updates; fuel pump replacement mentioned; some vehicles remain unrepairable despite dealer diagnostics
Recalls/TSBs owners mention: Recall 966 (knock sensor detection software update); Recall 209 (connecting rod bearing); owners report updates do not prevent recurring failures; dealership technicians have advised continuing to drive despite 'developing engine concern'
Dashboard Warning Lights Illuminating / Electrical System Failure
All or multiple warning lights illuminate on dashboard, often without prior symptoms. Speedometer, shift lock, and other critical gauges fail to operate. Events can cause vehicle to shut off or become undrivable.
When: While driving, without warning
Symptoms owners cite: All dashboard warning lights on simultaneously; Speedometer non-functional; Shift lock stuck in park; Turn signals inoperable; Temperature gauge non-functional; Vehicle shuddering; Engine shutting off mid-drive
Repairs/costs cited: Vacuum pump replacement mentioned in one case (TSB 19-01-010H); most owners report dealers cannot replicate or diagnose; some vehicles not repaired
Recalls/TSBs owners mention: TSB 19-01-010H (Vacuum Pump Sealant Application); owners report vehicle not covered by TSB; no recall applies to some instances; one owner noted manufacturer exceeded reasonable timeframe for parts distribution
Engine Knocking / Oil Starvation / Engine Failure
Engine knocking, ticking, and accelerated oil consumption (often 1,000–3,000 miles per quart despite no visible leaks). Multiple owners experience engine seizure or catastrophic failure at low mileage despite regular maintenance.
When: Early in vehicle life (22K–60K miles) and later (110K miles); post-engine-replacement engines fail again
Symptoms owners cite: Engine knocking or ticking noise; Burning smell like fire; Oil light illuminated; Rapid oil evaporation between changes; Engine shaking/vibration; Oil all over engine despite gasket replacements; Engine seizure / failure to crank
Repairs/costs cited: Oil pan reseal gaskets replaced multiple times; fuel pump replaced; full engine replacement performed; second engine failure post-replacement reported
Recalls/TSBs owners mention: Second engine failure denied coverage under goodwill/reimbursement waiver (liability release required); owners cite multiple dealer visits for same issues
Rear Door Latch Failure / Door Won't Open
Rear doors, and occasionally front doors, become stuck and will not open from inside or outside, trapping passengers. Extremely strong force sometimes required to open. Issue appears widespread across multiple model year Tucsons.
When: Varies; some immediate post-purchase, others after several years
Symptoms owners cite: Door will not open from exterior handle; Door will not open from interior handle; Requires extreme force to open door; Door intermittently refuses to open; Passenger trapped inside vehicle
Repairs/costs cited: Door latch replacement required; owners report dealership appointments booked weeks in advance
Recalls/TSBs owners mention: No recall listed; owners note this is a known issue on multiple Hyundai model years but not recalled for 2017 Tucson
Headlight / Brake Light Failures & Wiring Issues
Headlights, brake lights, and turn signal bulbs fail repeatedly and frequently. One owner's rear brake light wiring was scorched; bulbs come loose or sockets fail despite bulb replacement.
When: Throughout vehicle ownership
Symptoms owners cite: Brake light bulbs burning out repeatedly; Headlight bulbs shattering in housing; Headlight front shattering; Brake light wiring scorched; Brake light bulbs loosening repeatedly; Multiple bulbs burned out in short timeframe
Repairs/costs cited: Bulb replacement repeated multiple times; rear driver brake light wiring replaced; some wiring shows scorching indicating overheating/short
Backup Camera Blackouts
Backup camera display blacks out after initialization and periodically during use while in reverse, obstructing driver's view of rear area. Dangerous during parking lot and street backing maneuvers.
When: Throughout vehicle use, particularly in reverse motion
Symptoms owners cite: Camera blacks out after initialization; Screen goes black periodically while reversing; Backup guide lines disappear; Loss of rear view while backing
Repairs/costs cited: Rear camera replaced; issue persisted after camera replacement
Recalls/TSBs owners mention: Service department claims blackout at initialization is 'works as designed'; owner disputes this as the real issue is blackout during motion in reverse
Power Window Failures
Power windows operate in only one direction or fail completely. Some windows go down but won't go up; all window controls may become inoperable.
When: Various points in vehicle ownership
Symptoms owners cite: Windows will not roll up; Driver buttons non-functional for closing windows; Rear windows inoperable; Clicking and whirring sounds but windows do not move; All automatic window functions fail
Door Latch / Smart Key Button Failures
Smart key lock/unlock buttons on driver and front passenger doors break or fail, requiring manual key or key fob use. Button failure appears to be a design/durability issue.
When: Various points in vehicle ownership
Symptoms owners cite: Smart key button broken; Door cannot be locked/unlocked with button; Must use key fob or physical key; Dealer claims button broken from 'forcing' entry when no such forcing occurred
Recalls/TSBs owners mention: Newer redesigned models use touchscreen handle instead of button (suggesting manufacturer identified design defect)
Hesitation on Acceleration / Dual Clutch Issues
Vehicle hesitates for 2–3 seconds before responding to acceleration, then lurches forward. Occurs on pull-away from stops. Some owners have dual-clutch transmission that may be stuck or slipping.
When: Upon acceleration from stops
Symptoms owners cite: 3-second delay before vehicle accelerates; Sputtering or lurching forward after delay; Hesitation during quick acceleration; Engine sputtering or idle issues
Repairs/costs cited: Dealer indicates this is 'normal' for dual clutch transmission; one owner's transmission would not engage at all (dual clutch malfunction)
Recalls/TSBs owners mention: Some dealers dismiss as normal dual-clutch behavior; no repairs offered despite safety concerns
Transmission Failure / Dual Clutch Malfunction
Transmission fails to engage; vehicle will not move in Drive or Reverse and can only be pushed or towed. No warning lights precede failure.
When: During normal highway driving
Symptoms owners cite: Gear shift no longer engages; Vehicle will not move in Drive or Reverse; Can only move in Neutral; No warning lights before failure
Repairs/costs cited: Multiple shops (PepBoys, AAMCO) unable to provide solution; vehicle stranded since August 2nd
Recalls/TSBs owners mention: Hyundai states VIN not registered to existing recall; any repairs would be out-of-pocket; Carmax (used car seller) offers no assistance due to 90-day warranty and mileage
Infotainment / GPS / Radio Failures
Radio resets during driving; GPS changes language or fails to display details; navigation map won't turn off. Bluetooth connections appear to be compromised (one extreme case alleged hacking).
When: Throughout vehicle use and driving
Symptoms owners cite: Radio resets during driving; GPS changes language unexpectedly; GPS does not show details or traffic; Navigation map will not turn off; No sound in radio; Bluetooth connections failing or suspicious connections present
Automatic Seat Adjustment Failures
Driver seat reclining/inclining mechanism fails, trapping occupant in certain positions. Electrical button fails on reclining function.
When: Early in vehicle ownership (approximately January 2018 in one case)
Symptoms owners cite: Driver seat cannot recline or incline; Seat stuck in certain position; Seat reclining electrical button failing; Seat not reclining properly
Repairs/costs cited: Multiple repairs required (six seat issues, four service repairs reported by one owner)
Recalls/TSBs owners mention: One owner reports settlement offer of $8,000 in exchange for release of liability and retention of defective vehicle
Sunroof / Trunk Latch Failures
Trunk/rear hatch opens on its own unexpectedly and repeatedly; sunroof refuses to open completely or malfunctions.
When: Throughout vehicle use
Symptoms owners cite: Trunk opens by itself repeatedly; Trunk found open after parking; Sunroof opens only partially; Sunroof will not open fully
Recalls/TSBs owners mention: Dealer dismisses issue, claiming owner pressed button accidentally (contradicted by owner's repeated observation)
Headlight Switch / Turn Signal Arm Design Defect
Headlight/brightness control rotating end on turn signal arm moves unintentionally from AUTO or ON to OFF position, cutting off all lights and dashboard during highway driving at speed (55–75 mph).
When: While driving at highway speeds
Symptoms owners cite: All lights and dashboard go dark during driving; Lights cut off unexpectedly at highway speed; Switch arm rotates unintentionally; Driver left driving in darkness
Recalls/TSBs owners mention: Dealer does not address or correct design
Engine Fire Post-Recall / Electrical Hazard Post-Service
Following recall repairs (particularly engine or electrical recalls), vehicles develop burning smells, electrical fires, or rapidly accelerated electrical failures.
When: Post-recall repair service
Symptoms owners cite: Burning smell from hood; Heat radiating into cabin; Electrical smoke visible; Engine fire; Excessive heat under hood after service
Repairs/costs cited: One owner reports vehicle unable to be driven due to fire risk after engine replacement recall
Recalls/TSBs owners mention: Recall 21V727000 (Engine replacement); Recall 20V543000 (Electrical System); owners report recall repairs did not resolve electrical fires or may have contributed to them
Theft Vulnerability / Lack of Immobilizer
2017 Tucsons lack engine immobilizers, making them extremely easy theft targets. Thieves target the steering column to start vehicles, and vehicles are being used for joy rides and crimes.
When: Vehicle parked or unattended
Symptoms owners cite: Vehicle stolen despite locked state; Steering column stripped and damaged by thieves; Thieves able to start vehicle by accessing steering column; Vehicle used in crimes or joy rides
Repairs/costs cited: Steering column requires replacement after theft attempt; extensive damage to vehicle from criminal use
Recalls/TSBs owners mention: No immobilizer standard on 2016–2020 models; owners note this is a known design defect allowing easy theft
Push Button Start / Ignition Failure
Push-button start/stop function fails; engine won't turn off when commanded or unexpectedly restarts after shutting down. Some vehicles won't remote-start.
When: During normal shut-down or start procedures
Symptoms owners cite: Engine will not turn off with push-button; Engine restarts unexpectedly after shut-down; All warning lights turn on during restart; Engine vibrates at high RPM after restart; Remote start function does not work
Repairs/costs cited: Dealer unable to replicate issue in some cases
Steering Wheel Button / Control Failures
Buttons on steering wheel (particularly right side controls) become unresponsive or slow to respond, often linked to driver airbag warning light issues.
When: Progressive over time
Symptoms owners cite: Steering wheel buttons slow to respond; Steering wheel buttons completely unresponsive; Driver airbag light comes on intermittently; Driver airbag light becomes constant; Airbag may not deploy or may deploy randomly
Repairs/costs cited: Clock switch replacement required; nearly $1,000 in diagnostics and repairs
Recalls/TSBs owners mention: Known issue on several Hyundai years/models with extended warranties, but warranty not extended to 2017 Tucson (at time of report)
Soy-Based Wiring Harness / Rodent Damage
Wiring harnesses made with soy-based insulation attract rodents. Squirrels/rodents chew through harnesses, causing electrical failures, underhood damage, and inability to start vehicle.
When: Vehicle parked; can occur within weeks of purchase
Symptoms owners cite: Vehicle won't start or crank after rodent damage; Squirrel/rodent nests found under hood; Wiring harness chewed up; Insulation removed from wires; Headlight housings and plastic coverings chewed; All chewed materials are soy-based
Repairs/costs cited: Wiring harness replacement required; extensive underhood damage repair
Recalls/TSBs owners mention: Both Hyundai and Honda deny responsibility as 'manufacturing defect'; claim it is caused by outside circumstances (rodents); direct owners to auto insurance; manufacturer does not offer recall or redesign despite widespread problem online
Vacuum Pump Sealant / CAN Bus Electrical Failure
Vacuum pump cap or sealant defect causes electrical error in CAN bus system, disabling multiple systems simultaneously (speedometer, ABS, 4WD, parking brake, stability control, TPMS, check engine light).
When: At various mileage points
Symptoms owners cite: All warning lights on dashboard illuminated; Speedometer non-functional; ABS light on; 4WD light on; Parking brake light on; Stability control light on; TPMS sensor light on; Vehicle unable to communicate on CAN bus
Repairs/costs cited: Vacuum pump replacement required
Recalls/TSBs owners mention: TSB 19-01-010H (Vacuum Pump Sealant Application/Cap Replacement); not all vehicles covered
Oil Consumption / Oil Level Failures
Engine consumes oil excessively (quart or more per 1,000–3,000 miles) without visible leaks. Some owners ordered consumption tests.
When: Throughout vehicle ownership
Symptoms owners cite: Oil light illuminates frequently; Oil level drops rapidly between changes; No visible oil leak present; Oil change intervals shortened to 2,000–3,000 miles; Need to add oil between service intervals
Repairs/costs cited: Consumption tests ordered; root cause not identified in narratives
Recalls/TSBs owners mention: Dealer acknowledges hearing complaints about Tucson oil consumption; may be related to lawsuit (2016 models); 2017 models may have similar issue
Electrical Shorts / Burned Components
Various electrical components short out and burn, including brake light circuits, wiring under the hood, and dashboard areas.
When: Throughout vehicle use
Symptoms owners cite: Brake light wiring scorched/burned; Wiring under hood shows burn marks; Burned smell from electrical components; Multiple electrical component failures; Shorts in electrical system
Repairs/costs cited: Component replacement (brake light circuit, wiring harness)
Recalls/TSBs owners mention: Recall 20V543000 (Electrical System); owners report recall repairs not preventing subsequent electrical fires
Synthesized from 65 NHTSA owner complaints — unverified consumer
allegations, summarized for patterns. The verbatim filings appear below.