1. Disconnect the wire from the negative terminal of the battery.

2. Use a screwdriver to pry up the edge of the upper decorative trim of the floor tunnel and detach the trim, overcoming the elastic resistance of its fasteners.

3. Lift the trim and disconnect the wiring harness connector B from the front seat heating switch block from its reverse side by squeezing its fastening clamp. Squeeze the two clamps A located on the sides of the switch block and remove the block from the trim opening.
4. Install the parts in the reverse order of removal.
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