1. Disconnect the wire from the negative terminal of the battery.
2. Remove the console trim (see "Disassembling and assembling the instrument panel").
3. Remove the four screws securing the heater electric fan mode switch to the console trim…
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4. …and remove the switch.
Note: This is what the electric fan mode switch assembly looks like when removed from the vehicle.
Note: Replace the faulty switch with a new one, paying attention to its marking on the back side.
5. Install the heater electric fan mode switch in the reverse order of removal.