Common issues with transmissions primarily fall into the following categories. Second, shifting abnormalities-like engine stalling or unresponsiveness when engaging D/R gears-may stem from solenoid valve failure, clutch disc wear, or blocked fluid passages, requiring professional diagnostics to identify the root cause. Additionally, transmission slippage manifests as engine revving without corresponding speed increase during acceleration, often due to excessive clutch wear or low hydraulic pressure; delayed fluid changes exacerbate this issue. Unusual noises also commonly occur: bearing or gear wear produces RPM-dependent sounds, while pump failures generate abnormal noises accompanied by pressure fluctuations. Furthermore, transmission overheating usually results from inadequate cooling or overloading; elevated temperatures accelerate fluid degradation and may trigger protective shutdowns. For routine maintenance, replace specialized transmission fluid every 2 years or 20,000 km, regularly check fluid level and condition, and employ dynamic flushing equipment for more complete fluid replacement. Vehicles exceeding 50,000 km may benefit from detergent additives to maintain hydraulic systems. These practices effectively extend transmission lifespan and reduce repair expenses.
