The most common causes of transmission failures are fluid contamination and insufficient lubrication, which are usually caused by prolonged failure to change transmission fluid or the use of substandard fluids. Additionally, sustained high temperatures caused by cooling system malfunctions accelerate fluid oxidation, causing seal deterioration and oil leaks, further compromising the lubrication environment. Notably, poor driving habits like frequent hard acceleration and abrupt braking instantly increase gear load, while electronic control system issues (such as sensor failures or valve body blockages) may cause abnormal oil pressure regulation-all these factors interact with fluid-related problems. It is best to replace transmission fluid meeting OEM specifications every 60,000 kilometres or 4 years, and routinely inspect the radiator and oil pan seals to maximize transmission lifespan. Symptoms like delayed shifting or unusual noises should prompt immediate servicing to prevent consequential damage.
