Toyota 84652-27010 Windshield Wiper Switch Assembly

Removal steps 1. Park on a level surface, set the parking brake, remove the ignition key, and open the hood to allow easy access to the battery area. 2. Disconnect the negative battery terminal and isolate it so it cannot contact the battery post or metal surfaces; wait a minute for capacitors to discharge. 3. Remove any trim, dash or steering-column covers that commonly conceal the wiper switch using appropriate trim tools; keep fasteners organized. 4. Photograph or mark the switch orientation and connector positions so you can restore them exactly. 5. Depress connector release tabs and carefully unplug the electrical connector(s); gently rock if needed-do not pull on wiring. 6. Remove the switch retaining screws, nuts, or release the snap clips that typically secure the switch to the dash or column. 7. Pull the switch assembly straight out through the opening, feeding the wiring harness through without kinking or stretching. 8. Inspect the switch, harness, and connectors for corrosion, broken wires, or damaged insulation and address any issues before installing a replacement. Installation steps 1. Confirm the replacement switch matches the original in function and connector shape; compare terminals visually. 2. If desired, lightly coat connector terminals with approved dielectric grease to inhibit corrosion (use sparingly). 3. Route the harness through the opening the same way it came out, avoiding sharp edges and pinch points. 4. Position the switch in the dash or column opening and engage any snap clips or align screw holes without forcing it. 5. Secure the switch with its original fasteners, snugging by hand or with hand tools until the part is seated (do not over-tighten). 6. Reconnect the electrical connector(s) until the retention tab clicks and wires are free of tension. 7. Reinstall any trim or covers and return fasteners to their original locations. 8. Reconnect the negative battery terminal and tighten it snugly. 9. Test all switch functions with the ignition on: low/high speeds, intermittent/interval settings (if equipped), washer operation, and verify the wipers return to the parked position and operate smoothly. 10. If you observe binding, noise, intermittent operation, or electrical issues, disconnect the battery and recheck connector seating and switch alignment. Repair tip: Label or photograph connectors during removal and keep small fasteners in a labeled container to speed correct reassembly.