Rear combination light side

WARNING: This page is about a different car, the 2012 Subaru Outback and 2012 Subaru Legacy. However, it is still accessible from the selected car via links, so may be relevant.

Disconnect the ground cable from battery.
Release the lock and remove the bulb inspection cover of trunk room trim.

Fig 1: Removing Bulb Inspection Cover Of Trunk Room Trim
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Remove the bulb socket and tail light/stop light bulb.

Fig 2: Removing Bulb Socket And Tail Light/Stop Light Bulb
Courtesy of SUBARU OF AMERICA, INC.