Page 244 of 347

Fuse/Relay
LocationFuse Amp
RatingProtected Circuits
35 10A Rear park assist, Blind spot monitor
system, Rear video camera, AWD
36 5A Passive anti-theft sensor (PATS)
transceiver
37 10A Not used (spare)
38 20A Subwoofer amplifier
39 20A Radio
40 20A Not used (spare)
41 15A Automatic dimming mirror, Moon
roof, Compass, Front windows
42 10A Electronic stability control, Adaptive
headlamps
43 10A Rain sensor
44 10A Fuel diode/Powertrain control
module
45 5A Heated backlight and blower relay
coil, Wiper washer
46 7.5A Occupant classification sensor
(OCS) module, Passenger airbag off
lamp
47 30A Circuit
BreakerRear windows
48 — Delayed accessory relay
Power distribution box
The power distribution box is located in the engine compartment. The
power distribution box contains high-current fuses that protect your
vehicle’s main electrical systems from overloads.
WARNING:Always disconnect the battery before servicing high
current fuses.
WARNING:To reduce risk of electrical shock, always replace
the cover to the power distribution box before reconnecting the
battery or refilling fluid reservoirs.
Roadside Emergencies
244
2012 MKZ(378)
Owners Guide, 1st Printing
USA(fus)
Page 247 of 347

Fuse/Relay
LocationFuse Amp
RatingProtected Circuits
44 G8VA relay Right HID headlamp
45 15A** Injectors
46 15A** PCM
47 10A** General powertrain components,
A/C clutch, back-up lamps
48 15A** Ignition coils
4915A** Emissions related powertrain
components
50 — Not used
51 — Not used
52 Full ISO relay Blower motor relay
53 Full ISO relay Rear defrost relay
54 Full ISO relay Fuel relay
55 Full ISO relay Starter relay
56 — Not used
57 Full ISO relay PCM relay
58 — Not used
* Cartridge Fuses ** Mini Fuses
CHANGING THE TIRES
If you get a flat tire while driving, do not apply the brake heavily.
Instead, gradually decrease your speed. Hold the steering wheel firmly
and slowly move to a safe place on the side of the road.
Note:The tire pressure monitoring system (TPMS) indicator light will
illuminate when the spare tire is in use. To restore the full functionality
of the monitoring system, all road wheels equipped with tire pressure
monitoring sensors must be mounted on the vehicle.
Have a flat serviced by an authorized dealer in order to prevent damage
to the TPMS sensors, refer toTire pressure monitoring system
(TPMS)in theTires, Wheels and Loadingchapter. Replace the spare
tire with a road tire as soon as possible. During repairing or replacing of
the flat tire, have the authorized dealer inspect the TPMS sensor for
damage.
Roadside Emergencies
247
2012 MKZ(378)
Owners Guide, 1st Printing
USA(fus)
Page 271 of 347
•Do not spray a hot engine with cold water to avoid cracking the
engine block or other engine components.
•Spray Motorcraft Engine Shampoo and Degreaser (ZC-20) on all parts
that require cleaning and pressure rinse clean. In Canada use
Motorcraft Engine Shampoo (CXC-66-A).
•Cover the highlighted areas to prevent water damage when cleaning
the engine.
•Never wash or rinse the engine while it is hot or running; water in the
running engine may cause internal damage.
•Never wash or rinse any ignition coil, spark plug wire or spark plug
well, or the area in and around these locations.
PLASTIC (NON-PAINTED) EXTERIOR PARTS
Use only approved products to clean plastic parts. These products are
available from your authorized dealer.
•For routine cleaning, use MotorcraftDetail Wash (ZC-3-A).
•If tar or grease spots are present, use MotorcraftBug and Tar
Remover (ZC-42).
Cleaning
271
2012 MKZ(378)
Owners Guide, 1st Printing
USA(fus)
Page 273 of 347

•Be certain to wash or wipe your hands clean if you have been in
contact with certain products such as insect repellent and suntan
lotion in order to avoid possible damage to the interior painted
surfaces.
•Do not use household or glass cleaners as these may damage the
finish of the instrument panel, interior trim and cluster lens.
•Do not allow air fresheners and hand sanitizers to spill on interior
surfaces. If a spill occurs,wipe off immediately.Damage may not be
covered by your warranty.
WARNING:Do not use chemical solvents or strong detergents
when cleaning the steering wheel or instrument panel to avoid
contamination of the airbag system.
If a staining liquid like coffee/juice has been spilled on the instrument
panel or on interior trim surfaces, clean as follows:
1. Wipe up spilled liquid using a clean, white, cotton cloth.
2. Wipe the surface with a damp, clean, white cotton cloth. For more
thorough cleaning, use a mild soap and water solution. If the spot cannot
be completely cleaned by this method, the area may be cleaned using a
commercially available cleaning product designed for automotive
interiors.
3. If necessary, apply more soap and water solution or cleaning product
to a clean, white, cotton cloth and press the cloth onto the soiled
area–allow this to set at room temperature for 30 minutes.
4. Remove the soaked cloth, and if it is not soiled badly, use this cloth to
clean the area by using a rubbing motion for 60 seconds.
5. Following this, wipe area dry with a clean, white, cotton cloth.
INTERIOR
For fabric, carpets, cloth seats, safety belts and seats equipped with side
airbags:
•Remove dust and loose dirt with a vacuum cleaner.
•Remove light stains and soil with MotorcraftProfessional Strength
Carpet & Upholstery Cleaner (ZC-54).
•If grease or tar is present on the material, spot-clean the area first
with MotorcraftSpot and Stain Remover (ZC-14). In Canada, use
MotorcraftMulti-Purpose Cleaner (CXC-101).
Cleaning
273
2012 MKZ(378)
Owners Guide, 1st Printing
USA(fus)
Page 274 of 347

•If a ring forms on the fabric after spot cleaning, clean the entire area
immediately (but do not oversaturate) or the ring will set.
•Do not use household cleaning products or glass cleaners, which can
stain and discolor the fabric and affect the flame retardant abilities of
the seat materials.
WARNING:Do not use cleaning solvents, bleach or dye on the
vehicle’s safety belts, as these actions may weaken the belt
webbing.
WARNING:On vehicles equipped with seat-mounted airbags, do
not use chemical solvents or strong detergents. Such products
could contaminate the side-airbag system and affect performance of
the side airbag in a collision.
LEATHER SEATS (IF EQUIPPED)
•Remove dust and loose dirt with a vacuum cleaner.
•Clean spills and stains as quickly as possible.
•For routine cleaning, wipe the surface with a soft, damp cloth. For
more thorough cleaning, wipe the surface with a mild soap and water
solution. In Canada, use MotorcraftVinyl Cleaner (CXC-93). Dry the
area with a soft cloth.
•If the leather cannot be completely cleaned using a mild soap and
water solution, the leather may be cleaned using a commercially
available leather cleaning product designed for automotive interiors.
•To check for compatibility, first test any cleaner or stain remover on
an inconspicuous part of the leather.
•Do not use household cleaning products, alcohol solutions, solvents or
cleaners intended for rubber, vinyl and plastics, or oil/petroleum-based
leather conditioners. These products may cause premature wearing or
damage to the leather.
UNDERBODY
Flush the complete underside of your vehicle frequently. Keep body and
door drain holes free from packed dirt.
Cleaning
274
2012 MKZ(378)
Owners Guide, 1st Printing
USA(fus)
Page 278 of 347
IDENTIFYING COMPONENTS IN THE ENGINE COMPARTMENT
3.5L V6 engine
1. Power steering fluid reservoir
2. Transmission fluid dipstick
3. Brake fluid reservoir
4. Battery
5. Power distribution box
6. Air filter assembly
7. Engine oil dipstick
8. Engine oil filler cap
9. Windshield washer fluid reservoir
10. Engine coolant reservoir
Maintenance and Specifications
278
2012 MKZ(378)
Owners Guide, 1st Printing
USA(fus)
Page 280 of 347
To prolong the life of the wiper blades, it is highly recommended to
scrape off the ice on the windshield before turning on the wipers. The
layer of ice has many sharp edges and can damage the micro edge of the
wiper rubber element.
ENGINE OIL
Checking the engine oil
Refer to thescheduled maintenance informationfor the appropriate
intervals for checking the engine oil.
1. Make sure the vehicle is on level ground.
2. Turn the engine off and wait 15 minutes for the oil to drain into the
oil pan.
3. Set the parking brake and ensure the gearshift is securely latched in P
(Park).
4. Open the hood. Protect yourself from engine heat.
5. Locate and carefully remove the engine oil level dipstick.
6. Wipe the dipstick clean. Insert
the dipstick fully, then remove it
again.
Maintenance and Specifications
280
2012 MKZ(378)
Owners Guide, 1st Printing
USA(fus)
Page 281 of 347
•If the oil level iswithin this
range,the oil level is acceptable.
DO NOT ADD OIL.
•If the oil level isbelow this
mark,engineoil must be added
to raise the level within the
normal operating range.
•If required, add engine oil to the
engine. Refer toAdding engine
oilin this chapter.
•Do not overfill the engine
with oil. Oil levels above this
mark may cause engine
damage.If the engine is
overfilled, some oil must be
removed from the engine by an
authorized dealer.
7. Put the dipstick back in and
ensure it is fully seated.
Adding engine oil
1. Check the engine oil. For instructions, refer toChecking the engine
oilin this chapter.
2. If the engine oil level is not within the normal operating range, add
only certified engine oil of the recommended viscosity. Remove the
engine oil filler cap and use a funnel to pour the engine oil into the
opening.
Maintenance and Specifications
281
2012 MKZ(378)
Owners Guide, 1st Printing
USA(fus)