trailer SUBARU IMPREZA 2005 2.G Owner's Manual

11 - 1 8
Maintenance and service
„
Recommended grade and viscosity
under severe driving conditions
If the vehicle is used in desert areas, in areas with very
high temperatures, or used for heavy-duty applica-
tions such as towing a trailer, use of oil with the follow-
ing grade and viscosities is recommended.
API classification SL (or SJ):
SAE viscosity No.: 30, 40, 10W-50, 20W-40, 20W-50
„ Synthetic oil
You can use synthetic engine oil that meets the same
requirements given for conventional engine oil. When
using synthetic oil, you must use oil of the same clas-
sification, viscosity and grade shown in this owner’s
manual, and must follow the oil and filter changing in-
tervals shown in the maintenance schedule.
Cooling system
Never attempt to remove the radiator cap until
the engine has been shut off and has cooled
down completely. Since the coolant is under
pressure, you may suffer serious burns from a
spray of boiling hot coolant when the cap is re-
moved.
y The cooling system has been filled at the fac-
tory with a high quality, corrosion-inhibiting,
year-around coolant which provides protection
against freezing down to –33 °F (–36 °C). For
adding, use genuine SUBARU coolant or an
equivalent: a mixture of 50% soft water and 50%
ethylene-glycol basis coolant. Use of improper
coolants may result in corrosion in the cooling
system. It is important to maintain protection
against freezing and corrosion, even if freezing
temperatures are not expected. Never mix dif-
ferent kinds of coolant. y Do not splash the engine coolant over paint-

11 - 5 0
Maintenance and service
y
Abnormally low tire pressure (tread worn at
shoulders)
Rolling resistance is high, so fuel consumption is also
higher. y
Abnormally high tire pressure (tread worn in cen-
ter)
Ride comfort is poor. Also, the tire magnifies the ef-
fects of road-surface bumps and dips, possibly result-
ing in vehicle damage.
If the tire placard shows tire pressures for the vehicle
when fully loaded and for the vehicle when towing a
trailer, adjust the tire pressures to the values that
match current loading conditions.
Driving at high speeds with excessively low tire
pressures can cause the tires to deform severe-
HSB053AAHSB054AA

13-9
Consumer information and Reporting safety defects
– CONTINUED –
left hand side of the vehicle. (Each tire must be
kept on its original side of the vehicle.) Replace
any damaged or unevenly worn tire at the time of
rotation. After tire rotation, adjust the tire pres-
sures and make sure the wheel nuts are correct-
ly tightened. A tightening torque specification
and a tightening sequence specification for the
wheel nuts can be found “Flat tires” in Chapter 9. „Vehicle load limit – how to determine
The load capacity of your vehicle is determined
by weight, not by available cargo space. The
load limit of your vehicle is shown on the vehicle
placard attached to the driver’s side B-pillar. Lo-
cate the statement “The combined weight of oc-
cupants and cargo should never exceed XXX kg
or XXX lbs” on your vehicle’s placard.
The vehicle placard also shows seating capacity
of your vehicle.
The total load capacity includes the total weight
of driver and all passengers and their belong-
ings, any cargo, any optional equipment such as
a trailer hitch, roof rack or bike carrier, etc., and
the tongue load of a trailer. Therefore cargo ca- pacity can be calculated by the following method.
Cargo capacity = Load limit – (total weight of oc-
cupants + total weight of optional equipment +
tongue load of a trailer (if applicable))
For towing capacity information and weight lim-
its, refer to “Trailer towing” in Chapter 8. T
Calculating total and load capacities vary-
ing seating configurations
Calculate the available load capacity as shown in
the following examples:
Example 1A
UGD504BA

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Consumer information and Reporting safety defects
– CONTINUED –
number of occupants to two), the calculations
are as follows:
1. Calculate the total weight.
2. Calculate the available load capacity.
3. The total weight now exceeds the capacity
weight by 92 lbs (42 kg), so the cargo weight
must be reduced by 92 lbs (42 kg) or more. Example 2A
Vehicle capacity weight of the vehicle is 900 lbs
(408 kg), which is indicated on the vehicle plac-
ard with the statement “The combined weight of
occupants and cargo should never exceed 408
kg or 900 lbs”.
For example, the vehicle has one occupant
weighing 165 lbs (75 kg) plus cargo weighing
375 lbs (170 kg). In addition, the vehicle is fitted
with a trailer hitch weighing 22 lbs (10 kg), to
which is attached a trailer weighing 1,764 lbs
(800 kg). 10% of the trailer weight is applied to
Total weight = 154 lbs (70 kg) + 176 lbs (80 kg) + 662 lbs (300 kg) =
992 lbs (450 kg) (Occupant)
(Cargo)
Available Load Capacity
= 900 lbs (408 kg) – 992 lbs (450 kg) = –92 lbs (–42 kg) (Vehicle
capacity weight) (Total weight)
UGD505BA

13-12
Consumer information and Reporting safety defects
the trailer tongue (i.e. Tongue load = 176 lbs (80 kg)).
1. Calculate the total weight.
2. Calculate the available load capacity.
3. The result of step 2 shows that a further 162
lbs (73 kg) of cargo can be carried.
Example 2B
For example, if a person weighing 143 lbs (65
kg) and a child weighing 40 lbs (18 kg) now enter
the same vehicle (bringing the number of occu-
pants to three), and a child restraint system
weighing 11 lbs (5 kg) is installed in the vehicle
for the child to use, the calculations are as fol-
lows:
1. Calculate the total weight.
Total weight
= 165 lbs (75 kg) + 375 lbs (170 kg)
+ 22 lbs (10 kg) + 176 lbs (80 kg) =
738 lbs (335 kg)(Occupant) (Cargo)
(Trailer hitch) (Tongue load)
Available Load Capacity
= 900 lbs (408 kg) – 738 lbs (335 kg) =
162 lbs (73 kg) (Vehicle
capacity weight) (Total weight)
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Consumer information and Reporting safety defects
– CONTINUED –
2. Calculate the available load capacity.
3. The total weight now exceeds the capacity
weight by 32 lbs (15 kg), so the cargo weight
must be reduced by 32 lbs (15 kg) or more. „
Determining compatibility of tire and
vehicle load capacities
The sum of four tires’ maximum load ratings
must exceed the maximum loaded vehicle
weight (“GVWR”). In addition, sum of the maxi-
mum load ratings of two front tires and of two
rear tires must exceed each axle’s maximum
loaded capacity (“GAWR”). Original equipment
tires are designed to fulfill those conditions.
The maximum loaded vehicle weight is referred
to Gross Vehicle Weight Rating (GVWR). And
each axle’s maximum loaded capacity is referred
to Gross Axle Weight Rating (GAWR). The
GVWR and each axle’s GAWR are shown on the
vehicle certification label affixed to the driver’s
door.
The GVWR and front and rear GAWRs are de-
termined by not only the maximum load rating of
tires but also loaded capacities of the vehicle’s
suspension, axles and other body parts.
Therefore, this means that the vehicle cannot
necessarily be loaded up to the tire’s maximum
load rating on the tire sidewall.
Total weight = 165 lbs (75 kg) + 143 lbs (65 kg) + 40 lbs (18 kg)
+ 11 lbs (5 kg) + 375 lbs (170 kg) + 22 lbs (10 kg) + 176 lbs (80 kg) = 932 lbs (423 kg) (Occupant)
(Cargo)
(Trailer hitch)
(Child restraint)
(Tongue load)
Available Load Capacity
= 900 lbs (408 kg) – 932 lbs (423 kg) = –32 lbs (–15 kg) (Vehicle
capacity weight) (Total weight)

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Consumer information and Reporting safety defects
„
Adverse safety consequences of over-
loading on handling and stopping and on tires
Overloading could affect vehicle handling, stop-
ping distance, vehicle and tire as shown below.
This could lead to an accident and possibly result
in severe personal injury. y Vehicle stability will deteriorate.
y Heavy and/or high-mounted loads could in-
crease the risk of rollover.y Stopping distance will increase.
y Brakes could overheat and fail.
y Suspension, bearings, axles and other body
parts could break or experience accelerated
wear that will shorten vehicle life. y Tires could fail.
y Tread separation could occur.
y Tire could separate from its rim.
„ Steps for Determining Correct Load
Limit
1. Locate the statement “The combined weight
of occupants and cargo should never exceed
XXX pounds” on your vehicle’s placard. 2. Determine the combined weight of the driver
and passengers that will be riding in your vehicle.
3. Subtract the combined weight of the driver
and passengers from XXX kilograms or XXX
pounds.
4. The resulting figure equals the available
amount of cargo and luggage load capacity. For
example, if the “XXX” amount equals 1,400 lbs
(635 kg) and there will be five- 150 lbs (68 kg)
passengers in your vehicle, the amount of avail-
able cargo and luggage load capacity is 650 lbs.
(1,400 – 750 (5 x 150) = 650 lbs.)
5. Determine the combined weight of luggage
and cargo being loaded on the vehicle. That
weight may not safely exceed the available car-
go and luggage load capacity calculated in Step 4.
6. If your vehicle will be towing a trailer, load
from your trailer will be transferred to your vehi-
cle. Consult this manual to determine how this
reduces the available cargo and luggage load
capacity of your vehicle.

14-9
Index
Types .......................................................... 11-47
Tires and wheels ............................................. 11-47
Top tether anchorages ...................................... 1-47
Towing ............................................................... 9-17 All wheels on the ground .............................. 9-21
Flat-bed truck ................................................ 9-20
Trailer
Hitch ............................................................. 8-25
Hitches .......................................................... 8-34
Towing .......................................................... 8-29
Towing tips ................................................... 8-37
Trunk lid ............................................................. 2-27 Release handle ............................................. 2-28
Trunk light ........................................................ 11-82
Turn signal Indicator lights .............................................. 3-27
Lever ............................................................. 3-32
U
Under-floor storage compartment ...................... 6-18 V
Valet mode ........................................................ 2-20
Vanity mirror ........................................................ 6-4Vehicle Capacity weight ............................................ 8-19
Identification ............................................... 12-11 Symbols ............................................................. 4
Ventilator ............................................................. 4-2 W
Warning and indicator lights .............................. 3-20
Warning lights ABS .............................................................. 3-23
All-wheel drive .............................................. 3-26
Anti-lock Brake system ................................. 3-23
AT OIL TEMPerature .................................... 3-22
Brake system ................................................ 3-24
Charge .......................................................... 3-22
CHECK ENGINE .......................................... 3-21
Door open ..................................................... 3-26
Oil pressure .................................................. 3-22
R.Diff TEMPerature ...................................... 3-23
Seatbelt ............................................... 1-15, 3-20
SRS airbag system ....................................... 3-20
Warranties and maintenance ............................ 8-29
Washing ............................................................ 10-2
Waxing and polishing ........................................ 10-3
Wear indicators ............................................... 11-51
Wheel Alignment ...................................................... 12-6
Balance ....................................................... 11-51
Replacement .............................................. 11-53
Windows ............................................................ 2-24