FixVault

Main Switch

WARNING: This page is about a different car, the 2003 Subaru Forester. However, it is still accessible from the selected car via links, so may be relevant.

Measure the switch resistance.

Fig 1: Measuring Switch Resistance Chart (Driver's Switch)
G02089488Courtesy of SUBARU OF AMERICA, INC.
Fig 2: Measuring Switch Resistance Chart (Front Passenger's Switch)
G02089489Courtesy of SUBARU OF AMERICA, INC.
Fig 3: Measuring Switch Resistance Chart (Rear Left Switch)
G02089490Courtesy of SUBARU OF AMERICA, INC.
Fig 4: Measuring Switch Resistance Chart (Rear Right Switch)
G02089491Courtesy of SUBARU OF AMERICA, INC.

If NG, replace the main switch.