Check Switch
WARNING: This page is about a different car, the 2011 Subaru Tribeca. However, it is still accessible from the selected car via links, so may be relevant.
Remove the wiper deicer switch, and measure the switch resistance.
Courtesy of SUBARU OF AMERICA, INC. TERMINALS RESISTANCE CHART
| Switch position |
Terminal No. |
Standard |
| OFF |
1 and 2 |
1 MΩ or more |
| ON |
Less than 1 Ω |
Replace the wiper deicer switch if faulty.