Mercury 2005 Mountaineer Owner's Manual page 562

Roadside Emergencies
Passenger compartment fuse panel (top side)
These relays are located on the reverse side of the passenger
compartment fuse panel. See your dealer or a certified technician for
service of this relay box.
Fuse/Relay Location
Relay 1
Relay 2
Relay 3
Relay 4
Relay 5
Relay 6
Relay 7
226
2005 Mountaineer (mnt)
Owners Guide (post-2002-fmt)
USA (fus)
Description
Flasher
Rear defrost
Delayed accessory
Open
Battery saver
Open
Open