Subaru 2005 Legacy Owner's Manual page 479

In case of emergency
2. Wrap a flat-head screwdriver with cloth or vinyl.
Then, insert the screwdriver into the gap between the
fog light cover and the bumper, and pry out the cover.
3. Pull the entire fog light cover toward you.
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4. Likewise, insert the screwdriver still wrapped with
cloth or vinyl into the cutout between the towing hook
cover and the bumper. Pry out the cover.