Page 175 of 283

2007 Volvo XC70
pg. 157 Wheels and tires
General information
WARNING!
l The wheel and tire sizes for your Volvo are specified to meet stringent \
stability and handling
requirements. Unapproved wheel/tire size combinations can negatively aff\
ect your vehicle's stability
and handling. Approved tire sizes are shown in the Tire inflation pressu\
re tables on
pages 160 and
161.
l Any damage caused by installation of unapproved wheel/tire size combinat\
ions will not be covered
by your new vehicle warranty. Volvo assumes no responsibility for death,\
injury, or expenses that
may result from such installations.
New tires
Remember that tires are perishable goods. As of 2000, the manufacturing \
week and year will be
indicated with 4 digits (e.g. 1502 means that the tire illustrated was \
manufactured during week 15 of
2002).
Tire age
Tires degrade over time, even when they are not being used. It is recomm\
ended that tires generally be
replaced after 6 years of normal service. Heat caused by hot climates, f\
requent high loading conditions
or Ultra Violet (U.V) exposure can accelerate the aging process.
You should replace the spare tire when you replace the other road tires \
due to the aging of the spare.
A tire's age can be determined by the DOT stamp on the sidewall (see th\
e illustration above).
A tire with e.g., visible cracks or discoloration should be replaced imm\
ediately.
Improving tire economy:
l Maintain correct tire pressure. See the tire pressure table on pages 160 and 161.
l Drive smoothly: avoid fast starts, hard braking and tire screeching.
l Tire wear increases with speed.
l Correct front wheel alignment is very important.
l Unbalanced wheels impair tire economy and driving comfort.
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Page 209 of 283

2007 Volvo XC70
Belt check
Check the belt regularly to make sure it is in good condition and is cle\
an. A worn or dirty belt can cause
poor cooling and low alternator output as well as impair the operation o\
f the power steering and the air
conditioning unit.
NOTE: The drive belt is equipped with a self-tensioning mechanism and require\
s no adjustment
between changes.
WARNING!
The engine must not be running when this check is
performed.
Check coolant level
The cooling system must be filled with coolant and not leak to operate a\
t maximum efficiency. Check
the coolant level regularly. The level should be between the "MAX" and "\
MIN" marks on the expansion
tank. The check should be made with particular thoroughness when the eng\
ine is new or when the
cooling system has been drained.
Do not remove the filler cap other than for topping up with coolant. Fre\
quent removal may prevent
coolant circulation between the engine and the expansion tank during eng\
ine warm up and cooling.
Changing coolant
Normally, the coolant does not need to be changed. If the system must be\
drained, consult your Volvo
retailer.
NOTE: Do not top off with water only. This reduces the rust-protective and an\
tifreeze qualities of the
coolant and has a lower boiling point. It can also cause damage to the c\
ooling system if it should freeze.
Top off with Volvo Genuine Coolant/Antifreeze only (a 50/ 50 mix of wat\
er and antifreeze). CAUTION!
The cooling system must always be kept filled to the correct level. If i\
t is not kept filled, there can be
high local temperatures in the engine which could result in damage. Diff\
erent types of antifreeze/
coolant may not be mixed.
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Page 275 of 283
2007 Volvo XC70
2 0 0 7
VOLVO XC70
Index
pg. 247-250 Index
A
A/C (air conditioning)
77-82
ABS
2, 49, 137
Accessory installation (special warnings)
6
Active Bi-Xenon headlights (ABL)
55
Air conditioning
77-82
Air distribution
75, 78
Air quality sensor
79
Air vents
75
Alarm
116
All Wheel Drive
134
All Wheel Drive -towing
143
Anti-lock Brake System (ABS)
2, 49
Audio system
226
AUTO (climate control)
77
Automatic transmission
130
Automatic transmission - kickdown
131
Automatic transmission - Sport mode
133
Average speed
61
AWD
134
B
Battery
187, 195
replacing
197
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