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Low Tire Pressure
Warning LightPossible cause Customer Action Required
Flashing Warning
LightSpare tire in use Your temporary spare tire is in
use. Repair the damaged road
wheel and re-mount it on the
vehicle to restore system
functionality. For a description
of how the system functions
under these conditions, refer to
When your temporary spare
tire is installedin this section.
TPMS
malfunctionIf your tires are properly
inflated and your spare tire is
not in use and the TPMS
warning light still flashes,
contact your authorized dealer
as soon as possible.
When inflating your tires
When putting air into your tires (such as at a gas station or in your
garage), the Tire Pressure Monitoring System may not respond
immediately to the air added to your tires.
It may take up to two minutes of driving over 20 mph (32 km/h) for the
light to turn OFF after you have filled your tires to the recommended
inflation pressure.
How temperature affects your tire pressure
The Tire Pressure Monitoring System (TPMS) monitors tire pressure in
each pneumatic tire. While driving in a normal manner, a typical
passenger tire inflation pressure may increase approximately 2 to 4 psi
(14 to 28 kPa) from a cold start situation. If the vehicle is stationary
over night with the outside temperature significantly lower than the
daytime temperature, the tire pressure may decrease approximately 3 psi
(20.7 kPa) for a drop of 30° F (16.6°C) in ambient temperature. This
lower pressure value may be detected by the TPMS as being significantly
lower than the recommended inflation pressure and activate the TPMS
warning for low tire pressure. If the low tire pressure warning light is
ON, visually check each tire to verify that no tire is flat. (If one or more
tires are flat, repair as necessary.) Check air pressure in the road tires. If
2010 MKZ(378)
Owners Guide, 1st Printing
USA(fus)
Tires, Wheels and Loading
190
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Fuse/Relay
LocationFuse Amp
RatingProtected Circuits
39 — Not used
40 — Not used
41 G8VA relay Backup lamps
42 G8VA relay Left headlamps
43 G8VA relay A/C clutch
44 G8VA relay Right headlamps
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
2010 MKZ(378)
Owners Guide, 1st Printing
USA(fus)
Roadside Emergencies
241
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(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.
WARNING:The use of tire sealants may damage your Tire
Pressure Monitoring System and should not be used.
WARNING:Refer toTire pressure monitoring system (TPMS)
in theTires, Wheels and Loadingchapter for important
information. If the tire pressure monitor sensor becomes damaged, it
will no longer function.
Dissimilar spare tire/wheel information
WARNING:Failure to follow these guidelines could result in an
increased risk of loss of vehicle control, injury or death.
If you have a dissimilar spare tire/wheel, then it is intended for
temporary use only. This means that if you need to use it, you should
replace it as soon as possible with a road tire/wheel that is the same size
and type as the road tires and wheels that were originally provided by
Ford. If the dissimilar spare tire or wheel is damaged, it should be
replaced rather than repaired.
A dissimilar spare tire/wheel is defined as a spare tire and/or wheel that
is different in brand, size or appearance from the road tires and wheels
and can be one of three types:
1.T-type mini-spare:This spare tire begins with the letter “T” for tire
size and may have “Temporary Use Only” molded in the sidewall
2.Full-size dissimilar spare with label on wheel:This spare tire has
a label on the wheel that states: “THIS TIRE AND WHEEL FOR
TEMPORARY USE ONLY”
When driving with one of the dissimilar spare tires listed above,do not:
•Exceed 50 mph (80 km/h)
•Load the vehicle beyond maximum vehicle load rating listed on the
Safety Compliance Label
•Tow a trailer
•Use snow chains on the end of the vehicle with the dissimilar spare
tire
2010 MKZ(378)
Owners Guide, 1st Printing
USA(fus)
Roadside Emergencies
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Specification chart,
lubricants ...................................302
Speed control ..............................77
Starting your vehicle ........198–200
jump starting ..........................248
Steering wheel
controls ......................................80
tilting .........................................69
Stereo
6-CD in dash .............................29
CD-MP3 .....................................29
SYNC..........................................44
T
Tilt steering wheel ......................69
Tire Pressure Monitoring
System (TPMS)
Tires, Wheels and Loading ....186
Tires ...........................171–172, 241
alignment ................................179
care ..........................................175
changing ..................................241
checking the pressure ............175
inflating ...................................173
label .........................................185
replacing ..................................177
rotating ....................................179
safety practices .......................178
sidewall information ...............180
snow tires and chains ............191
spare tire .................................242
terminology .............................172
tire grades ...............................172
treadwear ........................171, 176
Towing .......................................196recreational towing .................196
trailer towing ..........................196
wrecker ....................................254
Transmission .............................211
brake-shift interlock (BSI) ....210
fluid, refill capacities ..............302
lubricant specifications ..........302
Trunk ...........................................94
remote release ....................87, 98
Turn signal ..................................57
U
USB port ......................................38
V
Vehicle Identification Number
(VIN) ..........................................306
Vehicle loading ..........................191
Ventilating your vehicle ...........201
W
Warning lights (see Lights) .......12
Washer fluid ..............................273
Water, Driving through .............231
Windows
opening using remote entry
system .................................74, 97
power .........................................73
Windshield washer fluid and
wipers ..........................................68
checking and adding fluid .....273
replacing wiper blades ...........273
Wrecker towing .........................254
2010 MKZ(378)
Owners Guide, 1st Printing
USA(fus)
Index
318