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Unscrew the bolts attached to the top of your Subaru, lift the sunroof off and safely set it aside if your sunroof operates manually. If your sunroof operates electrically, wipe the top to remove grit and grime, then simply open it wide.

Use a soft cloth soaked with water to remove all the leaves, dust and debris from the trough on which the sunroof rests when it is closed. Do the same thing to the seal on the underside of the sunroof. If your Subarus sunroof is electric, use the air compressor to clear the portion of the seal in the back.

Inspect the seal to determine if there are any cracks. If there are cracks in the seal, you can attempt to fix them with liquid caulk. But youll probably need to replace the seal to guarantee no more leaking.

Check the drainage tube because it might be clogged. These tubes allow rain to flow away from the cabin and onto the street. Using a thin wire, penetrate the tube by several inches to make sure its not clogged. If you find a clog, gently scrape the inside of the tube to get rid of it. You can also use the air compressor on the inside of the tube, but be very careful because it could rupture.

Remove the negative battery cable with a socket wrench to prevent the engine from starting. Wait 10 minutes for the the air bag system to deactivate before continuing with the heater removal procedure.

Place a clean container under the radiator drain, and open the drain plug with a socket wrench. Drain the coolant from the radiator into the container, and store it for later use. Detach the hoses from the heater below the center of the dashboard, and plug the open ends of the hoses with a clean shop cloth.

Remove the radio from the center console. Disconnect the retaining screws on the center console with a socket wrench, and remove the center console. Detach the covers from the mounting bolts on the instrument panel with a trim remover, and remove the mounting bolts.

Detach the trim from the lower part of the pillar in the center of the dash with a trim remover. Remove the covers for the instrument panel on both the driver and passenger sides. Disconnect the cable from the hood release lever. Disconnect the electrical wiring harness under the instrument panel.

Detach the instrument cluster and glove compartment from the vehicle. Remove the cables for the ventilation control and the electrical connector from the heater. Disconnect the vacuum line from the housing for the blower motor, and detach the feeder wire from the antenna.

Disconnect the electrical wiring harness from the fuse box. Detach the covers from the lower steering column, and disconnect the retaining bolts from the steering column with a socket wrench. Allow the steering column to hang freely.

Remove the retaining bolts for the instrument panel, and detach the instrument panel from the vehicle. Disconnect the control cables from the heater, and detach the electrical wiring harness from the blower motor. Remove the air duct between the blower motor and the heater. Lift the heater up and pull it out to remove it from the vehicle.