The high-current fuses are coded as follows.
Fuse/Relay
Location
Fuse Amp
Rating
Protected Circuits
1
50A*
Electronic power assist steering B+
2
50A*
Electronic power assist steering B+
3
40A*
Powertrain control module (aux relay 5
power)
4
—
Not used
5
—
Not used
6
40A*
Rear defrost (aux relay 4 power)
7
40A*
Vacuum pump (aux relay 6 power)
8
50A*
Brake system controller pump
9
20A*
Wiper washer
10
30A*
Brake system controller valves
11
—
Not used
12
30A*
Heated-cooled seats
13
15A**
Motor electronics coolant/heater pump
(relay 42 & 44 power)
14
—
Not used
15
—
Not used
Roadside Emergencies
253
2011 MKZ Hybrid
(hkz)
Owners Guide, 2nd Printing
USA
(fus)