Automatic Transmission
Troubleshooting
In this manual: Automatic Transmission
~1min read
Troubleshooting
Limp Home Mode
Features a fail-safe function that prevents hazardous situations in the event of a transaxle malfunction. The vehicle will operate in limp-home mode if a transaxle malfunction occurs. In this mode, the transaxle operates at a minimum functional level (fixed gear, limited shifting, reverse, neutral), allowing the vehicle to reach a service center.Troubleshooting| Symptom of Malfunction | Suspected Area | Remedy |
| Shift Delay, Shift Shock, Poor Acceleration | Clutch/brake damaged | Replace the brake or clutch. |
| Faulty hydraulic control | Inspect the solenoid valve. | |
| Faulty hydraulic supply | Check the fluid level. | |
| Check fluid cleanliness. | ||
| Replace the oil pump. | ||
| TCM learning not performed | Perform TCM adaptive learning values. | |
| Mechanical Fail-Safe Mode (locked in 4th gear, manual shifting disabled) |
Faulty solenoid valve | Inspect the solenoid valve. |
| Replace the valve body. | ||
| Faulty TCM | Replace the TCM. | |
| Faulty CAN communication | Inspect the CAN communication line. | |
| Limp Home Mode (locked in 4th gear, manual shift 2nd to 4th enabled) |
Faulty input and output speed sensor | Replace the input and output speed sensors. |
| Limp Home Mode (1st to 2nd shift disabled, 3rd to 6th shift enabled) |
Faulty lock switch | Replace the inhibitor switch. |
| Manual shift disabled | Faulty TCM | Replace the TCM. |
| Faulty connector connection | Check the connection of the manual mode connector. | |
| Faulty manual mode switch | Replace the manual mode switch housing. |
Test yourself
A quick Kia Carens RP quiz: every answer comes with an explanation and a link to the manual page.
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