A continuously variable transmission (CVT) is a type of automatic transmission that uses a belt and pulley system to provide a smooth and seamless driving experience. Unlike traditional automatic transmissions, which have distinct gears, CVTs can change ratios continuously, allowing the engine to operate at its optimal RPM for better fuel economy and performance. However, like any other transmission, CVTs can fail over time, and it’s important to be aware of the common signs that indicate a problem.
1. Slipping or Shuddering
One of the most noticeable signs of a failing CVT is slipping or shuddering. This occurs when the belt inside the transmission starts to slip or lose its grip on the pulleys. You may feel a sudden loss of power or a jerking sensation when accelerating or decelerating. In severe cases, the transmission may even refuse to engage at all.
2. Whining or Grinding Noise
A whining or grinding noise coming from the transmission area is another common sign of a problem. This noise usually indicates that the belt is worn or damaged, and it may also be a sign of bearing failure or other internal damage.
3. Jerky Acceleration
A CVT is designed to provide smooth acceleration, but if the transmission is failing, you may experience jerky or hesitant acceleration. This can be caused by a variety of factors, including a worn belt, faulty sensors, or internal transmission damage.
4. Reduced Fuel Efficiency
CVTs are known for their fuel efficiency, but if the transmission is failing, you may notice a significant drop in fuel economy. This is because the slipping belt or other internal problems are preventing the transmission from operating efficiently.
5. Transmission Fluid Leak
A transmission fluid leak is another sign of a serious problem. CVT fluid is essential for lubrication and cooling, and if the fluid level drops too low, it can lead to damage to the transmission. Look for any signs of fluid leaks under the vehicle, and if you notice any, have it checked out by a mechanic immediately.
6. Check Engine Light
If the check engine light comes on and the code points to a transmission issue, it’s a strong indication that there’s a problem with the CVT. This code can be retrieved using an OBD-II scanner, and a mechanic can diagnose the specific problem.
7. Smell of Burning Fluid
A burning smell coming from the transmission area can be a sign of overheating or a fluid leak. If you notice this smell, it’s important to stop driving immediately and have the vehicle checked by a mechanic.
What to Do If You Notice These Signs
If you notice any of the signs mentioned above, it’s important to take your vehicle to a qualified mechanic as soon as possible. A CVT repair can be expensive, but delaying repairs can lead to further damage and more costly repairs in the long run.