When your automatic transmission gears are not engaging smoothly or when they slip, then there could be a problem with the internal gearbox, which needs intervention from a professional mechanic. This guide is designed to help you identify the probable causes behind your automatic transmission slipping.
Low Transmission Fluid Levels
The level of transmission fluid should be right because this plays a vital role in providing the hydraulic pressure needed to operate and engage the transmission. This transmission fluid lubricates and cools the transmission. Low fluid levels may lead to air being drawn into the transmission, which can result in slipping transmissions. Low fluid levels may also indicate transmission leaks, which will need to be addressed by a qualified mechanic. Transmission fluid should ideally be checked when your transmission is running and when your fluid is warm for an accurate assessment. Your owner's manual will recommend the correct transmission level that needs to be maintained. If you are unable to check fluid levels on your own, then you may need to take it to a mechanic who specialises in dealing with automatic transmissions.
Low Transmission Fluid Pressure
Low pressure of transmission fluid may also result in slipping of your automatic transmission. Low pressure is created when the transmission pump is worn out or when the fluid filter is obstructed and clogged. You will need to check the fluid pressure using a specialised pressure sensor. Pressure solenoid valves or a pressure regulator controls this pressure. If they are damaged or cracked, then you will face low transmission fluid pressure, which will cause slipping. A qualified mechanic is best equipped to check for low pressure because these components may need to be replaced.
Burnt or Oxidised Transmission Fluid
Over time, your car's transmission fluid can get burnt because of overheating. Burnt fluid will have a distinct burning smell or will look black in colour. Blackish fuel may also be caused because of oxidisation. When fuel gets burnt, it loses its effectiveness in lubricating the transmission. This lubrication ineffectiveness will eventually wear out and damage the engine, which will cause your automatic transmission to slip. You may need to get the transmission fluid changed to extend the life of your automatic transmission.
If your automatic transmission keeps slipping, then you're bound to face issues while driving. Make sure you consult with a qualified mechanic if you notice your transmission slipping to get the problem rectified before it becomes massively damaging.