* A leak in the air lines. This is the most common cause of air bag deflation. Check the air lines for any cracks or holes, and repair or replace them as necessary.
* A faulty air compressor. The air compressor is responsible for filling the air bags with air. If the air compressor is not working properly, it will not be able to keep the air bags inflated.
* A faulty air suspension control module. The air suspension control module is responsible for controlling the air flow to the air bags. If the air suspension control module is not working properly, it may cause the air bags to deflate.
Disconnecting the battery may temporarily cure the problem because it resets the air suspension control module. However, this is only a temporary solution. You will need to address the underlying cause of the problem in order to fix it permanently.
If you are not comfortable troubleshooting and repairing your air suspension system yourself, you should take your car to a qualified mechanic.
