Manual transmission
| Sign | Possible cause |
| Vibration or noise | The gearbox or engine is not mounted correctly. There is radial clearance. The gear or bearing is worn or damaged. Inadequate transmission oil was used or the oil level is low. The engine idle speed is not adjusted correctly. |
| Gearbox oil leak | The oil seal or O-ring is damaged |
| Difficulty shifting gears | The gear shift cable is not adjusted. Poor contact of the synchronizer with the gear or wear of the synchronizer. Insufficient elasticity of the synchronizer spring. Inadequate transmission oil was used or the oil level is low. |
| Limited shutdown | The shift fork is worn or the lifting fork is damaged. The gap between the synchronizer sleeve and the sleeve groove is too large. The gear or bearing is worn or damaged. |
Automatic transmission
| Sign | Possible cause |
| No viewing information | Malfunction in the diagnostic system. Malfunction in the automatic transmission module. |
| The engine does not start | Malfunction in the engine system. Malfunction in the fuel pump or torque meter. |
| The vehicle cannot move forward | Incorrect voltage in the circuit. Malfunction in the reverse clutch or first gear clutch. Valve failure. |
| The vehicle cannot move backwards | Low speed brake failure or front clutch pressure mismatch. Failure of the forward clutch or the low-speed return gear. Valve failure. |
| The vehicle cannot move forward or backward | Pressure mismatch or failure of transmission signals. Pressure mismatch in the oil pump or valve body. |
| Engine stalls when shifting gears | Engine or clutch torque meter system failure. Failure of the valve body or torque meter. |
| Occurrence of vehicle vibration when shifting gear from position "N" to position "D" | Failure of the reverse clutch. Failure of the valve body coupling. Failure of the limit switch. |
| Occurrence of vehicle vibration when shifting gear from position "N" to position "R" | Failure of the front pressure clutch. Failure of the valve body coupling or limiter switch. Failure of the low-speed return gear. |
| Occurrence of vehicle vibration when shifting gear from the "N" position to the "D/R" position | Incorrect pressure reduction. Oil pump failure. Valve body failure. |
| Gear shift moments come either too early or too late | Valve body failure |
| The vehicle vibrates when driving at a constant speed or when accelerating | Engine system or valve failure. Failure of the hydraulic torque meter. |
| Failure of the acceleration system switch | Failure of the acceleration switch or ignition switch. Automatic transmission control module failure. |
Gearbox control mechanisms
| Sign | Possible cause |
| The gears do not engage | The position of the gearbox control selection cable has changed. The cable or shift lever is worn out. The cable assembly is not installed correctly. Gearbox failure. |
| Difficulty shifting gears | The position of the gearbox control selection cable has changed. The cable or shift lever is worn out. The cable assembly is not installed correctly. Gearbox failure. |