Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSTOYOTA2025COROLLA CROSS L, FWDREPAIR AND DIAGNOSIS (SINGLE PAGE)TRANSMISSIONAUTOMATIC TRANSAUTOMATIC TRANSAXLE SYSTEM (K121 / K121F) - DIAGNOSTICS - INTRODUCTIONCONTINUOUSLY VARIABLE TRANSAXLE SYSTEMPROBLEM SYMPTOMS TABLE [11/2023 - ]PROBLEM SYMPTOMS TABLE [11/2023 - ]
2025 Toyota Corolla Cross L, FWD
Problem Symptoms Table [11/2023 - ]
2025 Toyota Corolla Cross L, FWDSECTION Problem Symptoms Table [11/2023 - ]
HINT:
- Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
- Inspect the fuses and relays related to this system before inspecting the suspected areas below.
CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM
| Symptom | Suspected Area | Link |
|---|---|---|
| No gear change by moving shift lever to "+" or "-" from M | Transmission control switch circuit | Refer to Transmission Control Switch Circuit [11/2023 - ] |
| Shift position indicator is malfunctioning | Indicator circuit | Refer to Indicator Circuit [11/2023 - ] |
| Even though the shift lever is moved to any position, the shift position indicator does not change | CAN communication system | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2023 - 12/2024] , or refer to HOW TO PROCEED WITH TROUBLESHOOTING [12/2024 - ] |
| Perform Active Test (Combination Meter Assembly) | Refer to DATA LIST / ACTIVE TEST [11/2022 - ] | |
| Harsh engagement when shift mode is changed to gear mode | Transaxle compensation code is not registered | Refer to REGISTRATION [11/2023 - ] |
| Lack of power | Engine stall avoidance control (RoB is output) | Refer to VEHICLE CONTROL HISTORY (RoB) [11/2023 - ] |
| Shift solenoid valve SLU (System malfunction) | Refer to DTC P2756-00: Torque Converter Clutch Pressure Control Solenoid Control Circuit Performance/Stuck Off; DTC P2756-7E: Torque Converter Clutch Pressure Control Solenoid Control Actuator Stuck On [11/2023 - ] | |
| Shift solenoid valve SLU (Electrical malfunction) | Refer to DTC P2761-12: Torque Converter Clutch Pressure Control Solenoid Control Circuit High Circuit Short to Battery [11/2023 - ] |
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.