My wife's Hyundai tucson (either 2005 or 2006) almost caused an accident today when the acceleration became erratic and then stalled while at an intersection. She immediately brought it into our Hyundai service center. I spoke with a service manager to tell him about a tps (throttle position sensor) problem that I have found out about specific to the 05-06 Hyundai tucson. I also called…
2005 Hyundai Tucson powertrain problems
moderate 14 complaints filed with NHTSA · avg repair $2,500 · see powertrain across all vehicles →
Failure mileage
Complaints
14
Recalls
0
Avg fix
$2,500
When does it fail?
Of the 14 powertrain complaints filed for the 2005 Hyundai Tucson, here's the actual mileage breakdown — failures cluster heaviest at 50,000-75,000 mi.
0-25k
25-50k
50-75k
75-100k
100-125k
125-150k
150k+
Each bar shows the share of total complaints filed at that mileage range. Peak failure window highlighted. Some owners report problems earlier; some make it well past 150,000 miles symptom-free. Maintenance habits and driving conditions shift the curve as much as mileage alone.
What stands out
No new NHTSA powertrain complaint has been filed on this vehicle in over 15 years — the issue may be aging out of the active population.
The failure pattern owners describe
Buyer takeaway: The 2005 Tucson has serious powertrain reliability issues: transmission engagement failures at very low mileage, throttle position sensor failures causing stalling without fault codes, and recurring check engine lights that persist even after expensive repairs. Multiple owners report dealer inability to diagnose or fix problems, and some complaints went unresolved.
Owners of 2005 Tucsons report wide-ranging powertrain failures starting at low mileage. Transmission engagement problems appear repeatedly: two owners reported complete transmission failure requiring replacement at 5,900 and 9,500 miles, while others describe the transmission slipping out of gear, refusing to shift, or remaining stuck in third gear. The shift lever cable assembly broke inside the transmission on two vehicles with fewer than 400 miles, leaving them immobile in traffic.
Throttle Position Sensor (TPS) failure is a specific pattern: owners report jerking and stuttering during deceleration at 40–45 mph, stalling 50% of the time at stops, and engine shutdown when coasting—yet no fault codes trigger, making dealer diagnosis extremely difficult. Some owners had to insist technicians test the TPS specifically.
Check engine light problems appear in later model years, with one owner reporting a cascade of fault codes (P0133, P0420, cylinder misfires) starting in 2021 that persisted despite replacing the MAF sensor, oxygen sensors, battery, alternator, spark plugs, and head gasket seals. Another owner reported unwanted acceleration and refused acceleration at highway speed despite part replacements. Several owners mention dealers unable to diagnose problems after multiple visits, and shifter cable adjustments that required repetition every 9–12 months.
Failure modes owners describe
Throttle Position Sensor (TPS) Failure
TPS malfunction causing erratic acceleration, engine stalling, and jerking/stuttering sensation during deceleration. Does not trigger fault codes, making diagnosis difficult.
When: Between 40–45 mph, usually when transmission is warm; stalls 50% of time at stops
Symptoms owners cite: Jerking or stuttering sensation during coasting or deceleration; Engine stalling at stops; Erratic acceleration leading to near-accident; No check engine light or fault codes generated
Repairs/costs cited: Throttle Position Sensor replacement required; dealer may need Hyundai Techline consultation to diagnose without fault codes
Transmission Engagement Failure
Transmission loses ability to engage in forward or reverse gears; at extremely low mileage (9,500 miles and 5,900 miles), owners reported transmission would not shift out of third gear or would only engage at elevated RPM with slippage.
When: 9,500 miles; 5,900 miles
Symptoms owners cite: Transmission will not engage in forward or reverse; Slippage in gear with continued jerking; Refusal to shift into 4th gear; Loud noise and jerking forward at highway speed (60 mph); Requires elevated engine RPM (~3,000) to engage transmission
Repairs/costs cited: Full transmission replacement required; some dealers also replaced power steering components after transmission replacement
Recalls/TSBs owners mention: Dealer claimed they had not seen this problem nor received notification from other dealers
Transmission Control Module (TCM) Defect
Defective transmission control module at extremely low mileage (5,900 miles) caused loud jerking and gradual downshifting, requiring full transmission replacement.
When: 5,900 miles
Symptoms owners cite: Loud noise and jerking forward while driving at 60 mph; Gradual downshifting; Recurring transmission problems after initial repair
Repairs/costs cited: Transmission replacement required due to defective TCM
Engine Stalling Under Load
Engine completely shuts down when accelerator is released while driving, occurring at moderate speeds and early mileage.
When: 57,000 miles
Symptoms owners cite: Engine completely shuts down when accelerator pedal is released; Occurs while driving at 45 mph
Repairs/costs cited: Vehicle repaired by dealer; specific repair not detailed
Acceleration Failure Under Throttle
Vehicle fails to accelerate beyond 65 mph despite throttle input; stuck in third gear with no fault codes to aid diagnosis.
When: 47,000 miles
Symptoms owners cite: Vehicle will not accelerate beyond 65 mph; Remains stuck in third gear; No fault codes
Repairs/costs cited: Vehicle taken to authorized dealer six times; unable to diagnose or repair
Recalls/TSBs owners mention: Manufacturer referred contact back to dealer; no resolution
Shift Lever Cable Assembly Breakage
Shift lever cable assembly broke internally while driving at very low mileage, leaving vehicle immobile and stranded in traffic on a major highway.
When: Less than 400 miles (two incidents reported)
Symptoms owners cite: Shift lever broke off inside transmission; Vehicle could not move; No warning before failure; Occurred while slowing down and changing gears
Repairs/costs cited: Shift lever cable assembly replaced
Transmission Slipping Out of Gear
Transmission slips out of gear or fails to stay engaged, particularly when stopped at lights or when shifting into gear. Intermittent problem requiring multiple gear selector adjustments.
Symptoms owners cite: Transmission slips out of gear when in drive; Vehicle won't move despite being in gear; Slipping occurs when stopped at traffic lights; Manual flipping back and forth on auto gear selector may restore engagement
Repairs/costs cited: Dealer adjusted shifter cable repeatedly without permanent fix
Vehicle Moves While in Park
Vehicle rolls or moves when parked, despite shifter being in Park. Recurring problem—dealer adjusts shifter cable but issue returns 9–12 months later.
Symptoms owners cite: Vehicle moves on inclines while in Park; Vehicle can be pushed while in Park
Repairs/costs cited: Dealer adjusted shifter cable multiple times; no permanent fix identified
Erratic Engine Revving and Transmission Mis-shift
Engine revs to high RPM while stopped; owner attempts to shift to Neutral but mistakenly shifts to Reverse, with high revs continuing. Resolved after service.
When: 13 months prior to complaint
Symptoms owners cite: Engine revs to high rate while stopped at traffic light; Difficulty selecting correct gear (intended Neutral, shifted Reverse instead)
Repairs/costs cited: Idle speed control and throttle position sensor replaced; throttle body and fuel injection service performed
Transmission Shaking at Highway Speed
Transmission vibration or shaking occurs when driving above 65 mph, owner states this is abnormal.
Symptoms owners cite: Transmission shaking when driving over 65 mph
4WD Light Intermittent Illumination and Engagement Failure
Vehicle lurches forward when starting and refuses to engage into gear; 4WD light illuminates intermittently. Dealer unable to duplicate or diagnose problem.
Symptoms owners cite: Vehicle lurches forward when starting; Refuses to engage into gear; 4WD light illuminates intermittently
Repairs/costs cited: Vehicle taken to dealer several times; problem could not be duplicated or fixed
Unwanted Acceleration on Brake Release
Vehicle accelerates unexpectedly immediately after releasing brake pedal and depressing accelerator, and also when driving uphill. Alternator and serpentine belt replacement did not resolve issue.
When: 159,000 miles
Symptoms owners cite: Vehicle fails to accelerate when brake released and throttle applied; Failure also occurs when driving uphill; Intermittent, recurs after repair
Repairs/costs cited: Alternator and serpentine belt replaced by independent mechanic; failure recurred
Recalls/TSBs owners mention: Manufacturer informed contact that the plant that built the vehicle was not included in the recall
Check Engine Light Cascade and Catalyst System Fault
Multiple recurring check engine light codes starting in January 2021 including P0133 (oxygen sensor), P0420 (catalyst system below threshold), and recurring cylinder misfire codes despite replacement of MAF sensor, oxygen sensors, battery, alternator, spark plugs, and CV boots.
When: Starting January 2021; vehicle passed emissions in 2020
Symptoms owners cite: Check engine light with multiple fault codes; Codes include P0133, cylinder misfire for various cylinders, P0420 catalyst system fault; Codes persist after part replacements; Misfire codes clear and then reappear
Codes mentioned: P0133, P0420
Repairs/costs cited: Replaced: mass air flow sensor, oxygen sensors, battery, alternator (multiple times), both front CV boots, head gasket seals for both cylinder banks, spark plugs (OEM NKG). Catalytic cleaner used; no resolution. Dealership charged $150 diagnostic fee plus labor for each repair.
Synthesized from 14 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 1 most recent
Had powertrain trouble with your 2005 Hyundai Tucson?
File a complaint with NHTSA → It's free, official, and how every report above got here — owner filings are the federal safety record this page is built on.
Common questions
How serious is the powertrain problem on the 2005 Hyundai Tucson?
It's a documented issue but not catastrophic. 14 complaints have been filed. Repairs average $2,500 and most owners catch it before it causes a breakdown.
At what mileage does the powertrain typically fail?
Across the 10 complaints that reported odometer mileage, most powertrain failures cluster between 49,143 and 100,000 miles, with the median around 60,000. A quarter of owners report trouble before 49,143; a quarter make it past 100,000. Maintenance history matters more than the odometer alone — this is the reported failure window, not a guarantee.
What does it cost to fix?
Independent shops typically charge around $2,500 for powertrain repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Are there any recalls related to powertrain?
No active recalls currently cover powertrain issues on this vehicle. The complaints filed represent owner-reported failures that haven't risen to the level of a manufacturer-issued recall — but they're still worth knowing about before you buy or budget for repairs.
Related
Complaint and recall data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database. Verify the raw federal record at
nhtsa.gov/vehicle/2005/Hyundai/Tucson.
Severity ratings are derived from reported crashes, fires, injuries, and fatalities. Repair cost estimates are
independent-shop national averages and may differ in your area. Some links on this page are affiliate links.