Really only by driving it. You have to get on it quite often to make it go out. It's a safety feature so you don't overheat your S/C. You'll know because the car will surge forward when you're just cruising

To be honest if it has a warranty it's an easy fix, but to be quite honest I wouldn't want the OEM Bosch unit. Just get a Johnson pump and change it out yourself, it's a quick/easy fix