Hyundai Accent (HC): Intelligent Variable Transmission (IVT) System (Continuously Variable Transmission) / Troubleshooting

- Troubleshooting

Limp Home Mode

Limp Home Mode features a fail-safe function that prevents dangerous situations in the event of a transmission failure. The vehicle will be driven in limp home mode if the transmission malfunctions. In this mode, the transmission operates at a minimal functionality level (fixed shifting, limited shifting, reverse, neutral), making it possible for the vehicle to reach a service center.

   

• Fail safe function : Prevents dangerous situations from developing in the event of a malfunction

• Limp home function : Maintains minimal functionality (Drive, Reverse, and Neutral) in the event of a malfunction, making it possible for the vehicle to reach a service center.

Troubleshooting
Trouble symptom Suspected areaRemedy
Poor shift qualityFaulty drive pulley speed sensorInspect the drive pulley speed sensor & connector
Faulty driven pulley speed sensorInspect the driven pulley speed sensor & connector
Faulty turbine speed sensorInspect the turbine speed sensor & connector
Faulty solenoid valveInspect the solenoid valve
Faulty CAN communicationInspect the CAN communication line & controller (TCM/ECM)
Faulty Transmission Control Module(TCM) software Inspect the TCM and replace it if necessary.
After replacement, input hydraulic characteristics and perform TCM adaptive value learning.
TCM learning not performedPerform the learning procedure again after deleting "IVT learning value"
Faulty E-module Inspect the E-module & connector
Poor hydraulic pressure controlInspect the transmission hydraulic pressure
Poor hydraulic pressure supplyCheck the fluid level
No oil characteristics input after replacement of TCM or Intelligent Variable Transmission (IVT)Input the hydraulic characteristics
Slipping in the IVT, Damaged clutch/brakeReplace the IVT
Faulty position switch Inspect the position switch & connector
Shifting shockTCM learning not performedPerform the learning procedure again after deleting "IVT learning value"
No hydraulic characteristics input after replacement of TCM or IVTPerform the TCM adaptive value learning after hydraulic characteristics input
Poor hydraulic pressure controlCheck the IVT hydraulic pressure
Poor hydraulic pressure supplyCheck the IVTF level
Improper installation of the IVTTighten the mounting bolt to the specified torque
Damaged driven/drive pulleys, clutch/brakeReplace the IVT
Abnormal noise from transmissionDamaged bearing/ parts stuck insideReplace the IVT
Low IVTF levelCheck the fluid level
IVT shifting disabledDamaged pulley chain beltReplace IVT
Damaged gear/clutch/brakeReplace IVT

Other information:

Hyundai Accent (HC) (2017 - 2022) Service Manual: Troubleshooting

- Troubleshooting SymptomPassible CauseRemedy (Refer to page) Water leaks from panorama sunroofDeteriorated roof lid weatherstripReplace Excessive roof lid - to - body clearance and improperly fitted weatherstripAdjust Wind noise around sunroof Loose or deformed deflector, gaps in body workRetighten adjust or replace Noise created by moving sunroof lidForeign particles lodged in guide railCheck drive cable and guide rails for foreign particles Loose guide rails and lidRetighten Motor runs but sunroof does not move or moves only partiallyForeign particles lodged in guide railAdjust or replace Incorrect engagement of motor pinion with drive cable Decrease in motor's clutch slipping force Increased sunroof sliding resistance or interference of sunroof with drive cables, weatherstrip, etc.

Hyundai Accent (HC) (2017 - 2022) Service Manual: Front Stabilizer Bar

- Removal 1.Loosen the wheel nuts slightly.Raise the vehicle, and make sure it is securely supported. 2.Remove the front wheel and tire (A) from the front hub.Tightening torque :107.9 - 127.5 N.m (11.0 - 13.0 kgf.m, 79.6 - 94.0 lb-ft)     • Be careful not to damage the hub bolts when removing the front wheel and tire. 3.

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