Gain access to the radiator matrix by removing the surrounding body panels, fan shrouds, etc. Clean dirt and debris from the matrix using an air jet or water and a soft brush. Be careful not to damage the fins or cut your fingers.

Remove the protecting grille and clean any leaves, insects etc. from the air conditioner condenser coil and fins. Be very careful not to damage the condenser fins: use a soft brush, or a compressed air jet, along (not across) the fins.