
The advertised capacity is the amount of the indicated capacity and the
empty reserve combined. Indicated capacity is the difference in the
amount of fuel in a full tank and a tank when the fuel gauge indicates
empty. Empty reserve is the small amount of fuel remaining in the fuel
tank after the fuel gauge indicates empty.
The amount of usable fuel in the empty reserve varies and should
not be relied upon to increase driving range. When refueling your
vehicle after the fuel gauge indicates empty, you might not be
able to refuel the full amount of the advertised capacity of the
fuel tank due to the empty reserve still present in the tank.
For consistent results when filling the fuel tank:
•Turn the engine/ignition switch to the off position prior to refueling,
an error in the reading will result if the engine is left running.
•Use the same filling rate setting (low—medium—high) each time
the tank is filled.
•Allow no more than 2 automatic click-offs when filling.
•Always use fuel with the recommended octane rating.
•Use a known quality gasoline, preferably a national brand.
•Use the same side of the same pump and have the vehicle facing the
same direction each time you fill up.
•Have the vehicle loading and distribution the same every time.
Your results will be most accurate if your filling method is consistent.
Calculating fuel economy
1. Fill the fuel tank completely and record the initial odometer reading
(in kilometers or miles).
2. Each time you fill the tank, record the amount of fuel added (in liters
or gallons).
3. After at least three to five tank fill-ups, fill the fuel tank and record
the current odometer reading.
4. Subtract your initial odometer reading from the current odometer
reading.
5. Follow one of the simple calculations in order to determine fuel
economy:
Calculation 1:Multiply liters used by 100, then divide by total
kilometers traveled.
Calculation 2:Divide total miles traveled by total gallons used.
2005 Focus(foc)
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Maintenance and Specifications
180

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

3For spark plug replacement, see your dealer or a qualified service
technician. Refer to theScheduled Maintenance Guidefor the
appropriate intervals for changing the spark plugs.
Replace the spark plugs with ones that meet Ford material and
design specifications for your vehicle, such as Motorcraft or
equivalent replacement parts. The customer warranty may be
void for any damage to the engine if such spark plugs are not
used.
4Only use the specified replacement oil filter. The use of a non-specified
oil filter can result in engine damage.
REFILL CAPACITIES
Fluid Ford Part Name Application Capacity
Brake fluid
and clutch
fluidMotorcraft High
Performance DOT
3 Motor Vehicle
Brake FluidAll Fill to line on
reservoir
Engine
coolant
1Motorcraft
Premium Gold
Engine Coolant
(yellow-colored)2.0L engine 5.75L (6.1 quarts)
2.3L engine 5.75L (6.1 quarts)
Engine oil
(includes
filter
change)
4
Motorcraft SAE
5W-20 Premium
Synthetic Blend
Motor Oil (US)
Motorcraft SAE
5W-20 Super
Premium Motor
Oil (Canada)2.0L engine 4.3L (4.5 quarts)
2.3L engine 4.3L (4.5 quarts)
Fuel tank N/A 2.0/2.3L 53L (14.0 gallons)
Power
steering fluidMotorcraft
MERCONAT FAll Fill to between
MIN and MAX
lines on reservoir
2005 Focus(foc)
Owners Guide (post-2002-fmt)
USA English(fus)
Maintenance and Specifications
203

Fluid capacities .........................203
Foglamps .....................................30
Fuel ............................................175
calculating fuel economy .......179
cap ...........................................177
capacity ...................................203
choosing the right fuel ...........178
comparisons with EPA fuel
economy estimates .................182
detergent in fuel .....................179
filling your vehicle with
fuel ...........................175, 177, 179
filter, specifications ........179, 202
fuel pump shut-off switch .....126
improving fuel economy ........179
octane rating ...................178, 206
quality ......................................178
running out of fuel .................179
safety information relating to
automotive fuels .....................175
Fuel pump shut-off switch .......126
Fuses ..................................127–128
G
Garage door opener ....................42
Gas cap (see Fuel cap) ............177
Gas mileage (see Fuel
economy) ...................................179
Gauges .........................................14
H
Hazard flashers .........................126
Headlamps ...................................30
aiming ........................................31
bulb specifications ....................33
daytime running lights .............30
flash to pass ..............................31
high beam .................................31turning on and off ....................30
Heating
heater only system ...................26
Hood ..........................................163
I
Ignition ...............................103, 206
Infant seats (see Safety seats) ..95
Inspection/maintenance (I/M)
testing ........................................184
Instrument panel
cleaning ...................................159
cluster ........................................10
lighting up panel and
interior .......................................31
J
Jump-starting your vehicle ......139
K
Keyless entry system
autolock .....................................53
Keys
positions of the ignition .........103
L
Lamps
bulb replacement
specifications chart ..................33
daytime running light ...............30
fog lamps ...................................30
headlamps .................................30
headlamps, flash to pass ..........31
instrument panel, dimming .....31
interior lamps ...........................32
replacing bulbs .........................36
2005 Focus(foc)
Owners Guide (post-2002-fmt)
USA English(fus)
Index
217