Toyota Highlander Service Manual: On-vehicle cleaning

1. INSPECT FINS BLOCKAGE

(a) If the fins are clogged, wash them with water or a steam cleaner. Dry with compressed air.

NOTICE: If the distance between the steam cleaner and the core is too close, the fins may become damaged.

Keep the following injection distance.

Standard:

• If the fins are bent, straighten them with a screwdriver or pliers.
• Never apply water directly onto the electronic components