The replacement cycle of a car compressor is generally about 10 years, but the specific replacement time still needs to be determined based on factors such as the quality of the compressor, frequency of use, climate region, and frequency of use by users. Due to the uneven quality of compressors in different models and different climate conditions in different regions, it is impossible to give an accurate replacement cycle.

Methods to determine whether a car compressor is damaged:

1. The compressor does not rotate: If the compressor cannot rotate, it is likely to be damaged.

2. Abnormal noise: If the compressor makes abnormal noise when rotating, it may also be damaged.

3. Abnormal pressure: If the pressure in the air-conditioning system is abnormal, it may be due to a compressor failure.

4. High pressure and low pressure: If the high and low pressure values in the air-conditioning system are abnormal, it may also be caused by a compressor damage.

5. Use engine gears or belts to drive the compressor: The starting method of the air-conditioning compressor will also affect its service life. If the starting method is unreasonable, it may also cause damage to the compressor.