2005 FORD FOCUS check engine light

Choosing the right fuel
Use only UNLEADED FUEL. The use of leaded fuel is prohibited by law
and could damage your vehicle.
Your vehicle was not designed to use fuel or fuel additives with metallic
compounds, including manganese-based additives. Studies indicate that
these additives can cause your vehicle’s emission control system to
deteriorate more rapidly. In Canada, premium grade fuel generally
contains more metallic additives than regular fuel. We recommend using
regular grade fuel. In Canada, many fuels contain metallic additives, but
fuels free of such additives may be available; check with your local fuel
dealer.
Do not use fuel containing methanol. It can damage critical fuel system
components.
Repairs to correct the effects of using a fuel for which your vehicle was
not designed may not be covered by your warranty.
Octane recommendations
Your vehicle is designed to use
“Regular”unleaded gasoline with
pump (R+M)/2 octane rating of 87.
We do not recommend the use of
gasolines labeled as“Regular”that
are sold with octane ratings of 86 or lower in high altitude areas.
Do not be concerned if your engine sometimes knocks lightly. However, if
it knocks heavily under most driving conditions while you are using fuel
with the recommended octane rating, see your dealer or a qualified
service technician to prevent any engine damage.
Fuel quality
If you are experiencing starting, rough idle or hesitation driveability
problems, try a different brand of unleaded gasoline.“Premium”
unleaded gasoline is not recommended for vehicles designed to use
“Regular”unleaded gasoline because it may cause these problems to
become more pronounced. If the problems persist, see your dealer or a
qualified service technician.
It should not be necessary to add any aftermarket products to your fuel
tank if you continue to use high quality fuel of the recommended octane
rating. Aftermarket products could cause damage to the fuel system.
Repairs to correct the effects of using an aftermarket product in your
fuel may not be covered by your warranty.
87(R+M)/2 METHOD
2005 Focus(foc)
Owners Guide (post-2002-fmt)
USA English(fus)
Maintenance and Specifications
178

government emission standards. The OBD-II system also assists the
service technician in properly servicing your vehicle. When theCheck
engine/Service engine soonlight illuminates, the OBD-II system has
detected a malfunction. Temporary malfunctions may cause yourCheck
engine/Service engine soonlight to illuminate. Examples are:
1. The vehicle has run out of fuel. (The engine may misfire or run
poorly.)
2. Poor fuel quality or water in the fuel.
3. The fuel cap may not have been securely tightened.
These temporary malfunctions can be corrected by filling the fuel tank
with good quality fuel and/or properly tightening the fuel cap. After three
driving cycles without these or any other temporary malfunctions
present, theCheck engine/Service engine soonlight should turn off. (A
driving cycle consists of a cold engine startup followed by mixed
city/highway driving.) No additional vehicle service is required.
If theCheck engine/Service engine soonlight remains on, have your
vehicle serviced at the first available opportunity.
Readiness for Inspection/Maintenance (I/M) testing
In some localities, it may be a legal requirement to pass an I/M test of
the on-board diagnostics system. If your
indicator is on, refer to the
description in theWarning lights and chimessection of the
Instrument Clusterchapter. Your vehicle may not pass the I/M test with
the
indicator on.
If the vehicle’s powertrain system or its battery has just been serviced,
the on-board diagnostics system is reset to a“not ready for I/M test”
condition. To ready the on-board diagnostics system for I/M testing, a
minimum of 30 minutes of city and highway driving is necessary as
described below:
•First, at least 10 minutes of driving on an expressway or highway.
•Next, at least 20 minutes driving in stop-and-go, city-type traffic with
at least four idle periods.
Allow the vehicle to sit for at least eight hours without starting the
engine. Then, start the engine and complete the above driving cycle. The
engine must warm up to its normal operating temperature. Once started,
do not turn off the engine until the above driving cycle is complete.
2005 Focus(foc)
Owners Guide (post-2002-fmt)
USA English(fus)
Maintenance and Specifications
184

A
Air bag supplemental restraint
system ..............................81–82, 89
and child safety seats ..............83
description ..........................82, 89
disposal ......................................91
driver air bag ......................84, 90
indicator light ...........................88
operation .............................84, 90
passenger air bag ...............84, 90
side air bag ................................89
Air cleaner filter .......................202
Antifreeze
(see Engine coolant) ................169
Anti-lock brake system
(see Brakes) ..............................107
Anti-theft system ........................62
arming the system ....................62
disarming a triggered system ..62
Audio system (see Radio) ...16, 20
Automatic transaxle
fluid, adding ............................186
fluid, checking ........................186
fluid, specification ..................206
Automatic transmission ............110
driving an automatic
overdrive .................................111
fluid, refill capacities ..............203
Auxiliary power point .................43
Axle
lubricant specifications ..........205
refill capacities ........................203
B
Battery .......................................168
acid, treating emergencies .....168
jumping a disabled battery ....139maintenance-free ....................168
replacement, specifications ...202
servicing ..................................168
BeltMinder ...................................76
Brakes ........................................107
anti-lock ...................................107
anti-lock brake system (ABS)
warning light ...........................107
fluid, checking and adding ....185
fluid, refill capacities ..............203
fluid, specifications .........205–206
lubricant specifications ..205–206
parking ....................................108
shift interlock ..........................110
Break-in period .............................5
C
Capacities for refilling fluids ....203
Cargo cover .................................50
Cell phone use ............................49
Certification Label ....................209
Child safety restraints ................92
child safety belts ......................92
Child safety seats ........................95
attaching with tether straps ....99
in front seat ..............................96
in rear seat ................................96
LATCH .....................................101
Cleaning your vehicle
engine compartment ..............157
instrument panel ....................159
interior .....................................159
plastic parts ............................158
washing ....................................156
waxing .....................................156
wheels ......................................157
wiper blades ............................158
2005 Focus(foc)
Owners Guide (post-2002-fmt)
USA English(fus)
Index
Index
215

Lane change indicator
(see Turn signal) ........................32
Liftgate ........................................51
Lights, warning and indicator ....10
anti-lock brakes (ABS) ..........107
Load limits .................................115
Locks
autolock .....................................53
childproof ..................................54
Lubricant specifications ...205–206
Lug nuts ....................................139
M
Manual transaxle
lubricant specifications ..........206
Manual transmission .................113
fluid capacities ........................203
reverse .....................................114
Mirrors .........................................45
side view mirrors (power) .......45
Moon roof ....................................48
Motorcraft parts ................179, 202
O
Octane rating ............................178
Oil (see Engine oil) ..................165
P
Parking brake ............................108
Parts (see Motorcraft parts) ....202
Passenger Occupant
Classification Sensor ...................69
Power distribution box
(see Fuses) ...............................131
Power point .................................43Power steering ..........................109
fluid, checking and adding ....185
fluid, refill capacity ................203
fluid, specifications .........205–206
Power Windows ...........................44
R
Radio ......................................16, 20
Rear window defroster ...............29
Relays ........................................127
Remote audio controls ...............24
Remote entry system .................55
locking/unlocking doors ...........53
opening the trunk .....................57
Roadside assistance ..................125
S
Safety Belt Maintenance ............80
Safety belts
(see Safety restraints) ...68, 71–75
Safety defects, reporting ..........155
Safety restraints ..............68, 71–75
belt minder ...............................76
extension assembly ..................80
for adults .............................72–74
for children .........................91–92
Occupant Classification
Sensor ........................................69
safety belt maintenance ...........80
warning light and chime ....75–76
Safety seats for children ............95
Seat belts
(see Safety restraints) ...............68
Seats ............................................63
child safety seats ......................95
Servicing your vehicle ..............162
2005 Focus(foc)
Owners Guide (post-2002-fmt)
USA English(fus)
Index
218