Limp Home Mode
WARNING: This page is about a different car, the 2023 Kia Seltos. However, it is still accessible from the selected car via links, so may be relevant.
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.
Information
- 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 DESCRIPTION
| Trouble symptom | Suspected area | Remedy |
|---|---|---|
| Poor shift quality | Faulty drive pulley speed sensor | Inspect the drive pulley speed sensor & connector |
| Faulty driven pulley speed sensor | Inspect the driven pulley speed sensor & connector | |
| Faulty turbine speed sensor | Inspect the turbine speed sensor & connector | |
| Faulty solenoid valve | Inspect the solenoid valve | |
| Faulty CAN communication | Inspect the CAN communication line & controller (TCM/ECM) | |
| Faulty TCM software | Inspect the TCM and replace it if necessary. After replacement, input oil characteristics and perform TCM adaptive value learning. |
|
| TCM learning not performed | Perform the learning procedure again after deleting "AUTO T/A learning value" | |
| Faulty E-module | Inspect the E-module & connector | |
| Poor hydraulic pressure control | Inspect the transmission hydraulic pressure | |
| Poor hydraulic pressure supply | Check the fluid level | |
| No oil characteristics input after replacement of TCM or IVT | Input the oil characteristics | |
| Slipping in the IVT, Damaged clutch/brake | Replace the IVT | |
| Faulty position switch | Inspect the position switch & connector | |
| Shifting shock | TCM learning not performed | Perform the learning procedure again after deleting "AUTO T/A learning value" |
| No oil characteristics input after replacement of TCM or IVT | Perform the TCM adaptive value learning after oil characteristics input | |
| Poor hydraulic pressure control | Check the IVT hydraulic pressure | |
| Poor hydraulic pressure supply | Check the IVT fluid level | |
| Improper installation of the IVT | Tighten the mounting bolt to the specified torque | |
| Damaged driven/drive pulleys, clutch/brake | Replace the IVT | |
| Abnormal noise from transmission | Damaged bearing/parts stuck inside | Replace the IVT |
| Low oil level | Check the fluid level | |
| IVT shifting disabled | Damaged pulley/chain belt | Replace IVT |
| Damaged gear/clutch/brake | Replace IVT |