How do you clear a clogged automitive air conditoning drain?

To clear a clogged automotive air conditioning drain, first, locate the drain tube, typically found under the vehicle near the firewall. Use a flexible wire or a pipe cleaner to gently push through the tube and dislodge any debris. You can also flush the drain with a mixture of water and vinegar to help remove any buildup. Lastly, ensure the drain is flowing freely by pouring a small amount of water into the evaporator case and checking for drainage underneath the vehicle.