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Sometimes irregular tire wear can be corrected by rotating the tires.
Note:If your tires show uneven wear ask a qualified technician at a
Ford or Lincoln/Mercury dealership to check for and correct any wheel
misalignment, tire imbalance or mechanical problem involved before tire
rotation.
Note:After having your tires rotated, inflation pressure must be checked
and adjusted to the vehicle requirements.
Tire wear
Measure and inspect the tire tread on all your tires periodically.
Advanced and unusual tire wear can reduce the ability of tread to grip
the road in adverse (wet, snowy, etc.) conditions. Visually check your
tires for uneven wear, looking for high and low areas or unusually
smooth areas. Also check for signs of tire damage.
When the tread is worn down to 4
mm (1/16th of an inch), tires must
be replaced to prevent your vehicle
from skidding and hydroplaning.
Built-in treadwear indicators, or
“wear bars”, which look like narrow
strips of smooth rubber across the
tread will appear on the tire when
the tread is worn down to 4mm (1/16th of an inch). When you see these
“wear bars”, the tire is worn out and should be replaced.
Inspect your tires frequently for any of the following conditions and
replace them if one or more of the following conditions exist:
•Fabric showing through the tire rubber
•Bulges in the tread or sidewalls
•Cracks or cuts on the sidewalls
•Cracks in the tread groove
•Impact damage resulting from use
•Separation in the tread
•Separation in the sidewall
•Severe abrasion on the sidewall
If your vehicle has a leak in the exhaust system, a road tire or the spare
tire may be exposed to hot exhaust temperatures requiring the tire to be
replaced.
2004 Focus(foc)
Owners Guide (post-2002-fmt)
USA English(fus)
Maintenance and Specifications
205
Page 206 of 232

Safety practices
Driving habits have a great deal to do with your tire mileage and safety.
•Observe posted speed limits
•Avoid fast starts, stops and turns
•Avoid potholes and objects on the road
•Do not run over curbs or hit the tire against a curb when parking
If you vehicle is stuck in snow, mud, sand, etc.,do notrapidly spin the
tires; spinning the tires can tear the tire and cause an explosion. A tire
can explode in as little as three to five seconds.
Tire explosions can cause death, personal injury or property
damage. Do not allow anyone to stand near, or directly ahead or
behind the spinning tire.
Never spin the tires in excess of the 55 km/h (35 mph) point
indicated on the speedometer.
Highway hazards
No matter how carefully you drive there’s always the possibility that you
may eventually have a flat tire on the highway. Drive slowly to the
closest safe area out of traffic. This may further damage the flat tire, but
your safety is more important.
If you feel a sudden vibration or ride disturbance while driving or you
suspect your tire or vehicle has been damaged, immediately reduce your
speed. Drive with caution until you can safely pull off the road. Stop and
inspect the tire for damage. If the tire is under-inflated or damaged,
deflate it, remove wheel and replace it with your spare tire and wheel. If
you cannot detect a cause, have the vehicle towed to the nearest repair
facility or tire dealer to have the vehicle inspected.
SNOW TIRES AND CHAINS
Snow tires must be the same size and grade as the tires you
currently have on your vehicle.
The tires on your vehicle have all weather treads to provide traction in
rain and snow. However, in some climates, you may need to use snow
tires and chains. If you need to use chains, it is recommended that steel
wheels (of the same size and specifications) be used, as chains may chip
aluminum wheels.
2004 Focus(foc)
Owners Guide (post-2002-fmt)
USA English(fus)
Maintenance and Specifications
206
Page 207 of 232

Vehicles with Traction Control (if equipped) may exhibit some unusual
driving characteristics, when using snow chains, which can be avoided by
switching Traction Control off.
Follow these guidelines when using snow tires and chains:
Snow chains should only be fitted to size P 185/65 R14 tires.
Snow chains should never be used on the spare tire.
•Use only SAE Class S chains.
•Install chains securely, verifying that the chains do not touch any
wiring, brake lines or fuel lines.
•Drive cautiously. If you hear the chains rub or bang against your
vehicle, stop and re-tighten the chains. If this does not work, remove
the chains to prevent damage to your vehicle.
•If possible, avoid fully loading your vehicle.
•Remove the tire chains when they are no longer needed. Do not use
tire chains on dry roads.
•The suspension insulation and bumpers will help prevent vehicle
damage. Do not remove these components from your vehicle when
using snow tires and chains.
MOTORCRAFT PART NUMBERS
Component 2.0L I4 SPI
engine2.0L I4
Zetec-E
engine2.3L I4 PZEV
engine
Air filter element FA-1688 FA-1688 N/A
(Lifetime)
1
Fuel filter FG-986–B FG-986–B FG-1081
Oil filter FL-400-S FL-2005 FL-910
Battery BXT-40R BXT-96R BXT-96R
PCV valve
2
Spark plugs-platinum3
1
Non Serviceable Part. Air Filter Service Minder indicates if service is
needed. See dealer or qualified technician for replacement. The air filter
is designed as a“lifetime”part.
2The PCV valve is a critical emission component. It is one of the items
listed in the scheduled maintenance guide and is essential to the life and
performance of your vehicle and to its emissions system.
2004 Focus(foc)
Owners Guide (post-2002-fmt)
USA English(fus)
Maintenance and Specifications
207
Page 226 of 232

T
Temperature control
(see Climate control) .................34
Tilt steering wheel ......................51
Tires ...................................194–195
changing ..........................136 –137
snow tires and chains ............206
tire grades ...............................195
treadwear ................................195
Towing .......................................122 recreational towing .................124
trailer towing ..........................122
wrecker ....................................147
Traction control ........................113
Transaxle lubricant specifications ..........212
Transmission automatic operation ...............114
brake-shift interlock (BSI) ....114
fluid, checking and adding
(automatic) .............................191
fluid, checking and adding
(manual) .................................194
fluid, refill capacities ..............208
lubricant specifications ..........210
manual operation ....................117 Trunk ...........................................62
remote release ..........................65
Turn signal ..................................41
V
Vehicle dimensions ...................212
Vehicle Identification Number
(VIN) ..........................................216
Vehicle loading ..........................119
Ventilating your vehicle ...........111
W
Warning lights (see Lights) .......10
Washer fluid ..............................169
Water, Driving through .............119
Windows power .........................................52
rear wiper/washer .....................50
Windshield washer fluid and
wipers checking and adding fluid .....169
operation ...................................50
replacing wiper blades .............51
Wrecker towing .........................147
2004 Focus (foc)
Owners Guide (post-2002-fmt)
USA English (fus)
Index
226
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