P0700 on Hyundai

The IVT (CVT) transmission in 2017+ Accent models can fail prematurely, with symptoms ranging from shuddering and slipping to complete loss of drive. The chain and pulley system wears, especially with aggressive driving or neglected fluid changes. Rebuilds are typically not cost-effective given the vehicle's value.

The 2006-2011 Hyundai Azera with the 5-speed or 6-speed automatic transmission develops shift hesitation, particularly a noticeable 1-2 shift delay under wide-open throttle when cold. The torque converter lockup clutch also develops shudder during light-throttle cruising at 35-55 mph. Hyundai issued a PCM recalibration procedure to address the cold-start hesitation. If the transmission fluid is not changed regularly, the shudder progressively worsens and can lead to torque converter failure or internal transmission damage. The Azera shares its transmission with the Sonata and Santa Fe of the same era.

The 7-speed dual clutch transmission (DCT) in Elantra Sport and Elantra GT models suffers from consistent problems including shuddering, hesitation during acceleration, and sudden loss of power. The clutch pack is not replaceable, requiring full transmission replacement. A class action resulted in a $41.2 million settlement.

The Smart Stream IVT (Intelligent Variable Transmission) in newer Elantras has experienced early failures, sometimes before reaching 20,000 miles. Issues include sudden power loss, check engine lights, and RPM fluctuations. Hyundai issued TSB 20-01-047H addressing transmission control module calibration issues.

The concentric slave cylinder (CSC) in manual-transmission Genesis Coupes fails prematurely, causing soft or spongy clutch pedal feel and eventually inability to disengage the clutch. The internal seal leaks, allowing fluid to contaminate the clutch disc. Replacement requires transmission removal, making it a labor-intensive repair.

Kona models with the 1.6L turbo and 7-speed DCT experience shuddering during low-speed driving, delayed engagement from a stop, and lurching during parking maneuvers. The dry dual-clutch design struggles with heat and wear. Hyundai extended DCT warranty to 10 years/100,000 miles after class-action pressure.

The 8-speed automatic transmission in the Palisade can exhibit harsh 1-2 and 2-3 upshifts, delayed downshifts when passing, and occasional harsh engagement from park to drive. The TCM calibration is the primary issue, though some cases involve valve body wear. Hyundai has released multiple software updates to improve shift quality.

The 8-speed wet dual-clutch transmission (DCT) on the 2.5L turbo Santa Cruz can overheat when towing near its 5,000 lb capacity or during spirited driving in warm weather. The transmission overheating warning forces the vehicle into limp mode. The DCT cooling system is undersized for heavy-duty use.

Like its Excel sibling, the Scoupe automatic transmission suffers from premature wear and failure. The same 4-speed automatic unit is used, with identical failure modes including clutch pack degradation, valve body issues, and torque converter problems. The Scoupe Turbo model puts additional stress on the already marginal transmission. Manual transmission models are far more reliable and the preferred choice among enthusiasts.

Sonatas equipped with the dual-clutch transmission can experience shuddering, hesitation, and jerky engagement at low speeds. The DCT can feel rough in stop-and-go traffic. This is a characteristic of the dry-clutch DCT design.

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.

The 6-speed dry DCT in the Veloster Turbo is prone to premature clutch wear and failure, often before 60,000 miles. Symptoms include slipping, shuddering, and complete loss of drive. The dry clutch design generates excessive heat in stop-and-go traffic. Hyundai extended DCT warranty coverage after numerous complaints.

The Hyundai Venue uses an IVT (Intelligent Variable Transmission), which is Hyundai's version of a CVT. The IVT can exhibit judder during low-speed acceleration, hesitation when merging or passing, and a rubber-band effect during throttle changes. The transmission programming prioritizes fuel economy, causing noticeable delays between throttle input and vehicle response. Hyundai has released TCM software updates to improve responsiveness for some model years.

The Veracruz uses an Aisin-Warner A6LF1 6-speed automatic transmission that develops harsh shifting and torque converter shudder. The most common complaint is a shudder during light-throttle acceleration at 35-50 mph caused by torque converter clutch material breakdown. The valve body solenoids also develop wear, causing delayed 2-3 and 4-5 upshifts. Hyundai extended the transmission warranty to 10 years/100,000 miles on some affected vehicles through TSB 09-AT-001.