Never Use Cruise Control in Heavy Rain or Snow

If you hydroplane while cruise control is active, the system detects the sudden loss of tire resistance and accelerates into the skid trying to maintain your set speed. Without cruise control, your natural reaction — lifting off the gas — is exactly the right one. This one setting turns a recoverable skid into a potentially fatal loss of control. Turn off cruise control any time roads are wet, snowy, or icy. It's designed for dry, clear conditions only.