I have recently bought used Toyota vitz 2008 model.overall it's a clean car with nice and powerful engine. Only problem I faced is when on highway if I go beyond 90, it's ac turns off and on after 5-10 minutes interval. Although AC cooling is fine but when it turns off, feel heat in car cabin. When ac is back on, it gradually gets better.
Can you guys tell what could be the reason of this turning off and on?