engine VOLVO XC70 2006 Owner´s Manual

113
Brake system

 


  
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Water on brake discs and brake pads affects
braking
Driving in rain and slush or passing through an automatic car wash can
cause water to collect on the brake discs and pads. This will cause a
delay in braking effect when the pedal is depressed. To avoid such a
delay when the brakes are needed, depress the pedal occasionally when
driving through rain, slush etc. This will remove the water from the
brakes. Check that brake application feels normal. This should also be
done after washing or starting in very damp or cold weather.
Severe strain on the brake system
The brakes will be subject to severe strain when driving in mountains or
hilly areas or towing. Vehicle speed is usually slower, which means that
the cooling of the brakes is less efficient than when driving on level
roads. To reduce the strain on the brakes, shift into a lower gear and let
the engine help with the braking. Do not forget that, if you are towing a
trailer, the brakes will be subjected to a greater than normal load.
BRAKEBrake circuit malfunction

   

    

 
 




 
      






  





   


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NOTE: When the car is at a standstill and the engine is idling, e.g. at a
traffic light and the brake pedal is depressed, the pedal may go down
slightly. This is normal and is caused by an built-in function in the
power brake system.
Power brakes function only when the engine
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114
Anti-lock Brake System (ABS)
If the warning lamp lights up there is a malfunction of the ABS
system (the standard braking system will however function) and the
vehicle should be driven cautiously to a Volvo retailer for inspection.
The Anti-lock Braking System (ABS) helps to improve vehicle control
(stopping and steering) during severe braking conditions by limiting
brake lockup. When the system "senses" impending lockup, braking
pressure is automatically modulated in order to help prevent lockup,
which could lead to a skid.
The system performs a self-diagnostic test when the engine is started
and when the vehicle first reaches a speed of approximately 12 mph
(20 km/h). The brake pedal will pulsate several times and a sound may
be audible from the ABS control module. This is normal.
To obtain optimal effect from the ABS system, constant pressure
should be kept on the brake pedal. Do not pump the brake pedal.
The switching of the ABS modulator will be audible and the brake pedal
will pulsate during braking. Please be aware that ABS does not increase
the absolute braking potential of the vehicle. While control will be
enhanced, ABS will not shorten stopping distances on slippery surfaces.
ABS with EBD (Electronic Brake Force Distribution)
EBD is an integrated part of the ABS system. EBD regulates the
hydraulic pressure to the rear brakes to help provide optimal braking
capacity. The brake pedal will pulsate during braking, which is normal.
If the BRAKE and ABS warning lights come on at the same
time, this could indicate a fault in the brake system.
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135
Chapter 8 - Maintenance/Servicing
Fuses 136
Replacing bulbs 141
Paint touch up 148
Washing the car 149
Cleaning the upholstery 151
Maintenance service, Warranty 152
Fuel/emissions systems 153
Drive belt, Coolant 154
Maintaining your car 155
Servicing 157
Opening the hood, Engine compartment 158
Engine oil 159
Power steering/Brake fluid reservoirs 161
Replacing the battery 162
Battery maintenance 163
Replacing wiper blades 164

137
Fuses in the engine compartment
Relays/fuses in the engine compartment
When replacing fuses, be sure to replace a blown fuse with a new one of
the same color and amperage (written on the fuse). Fuse amperage is
also indicated on the inside of the fuse box cover. Fuses in positions
marked X are replacement fuses.
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149
Washing the car
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Suitable detergents: Special car washing detergents should be used.
Mix according to manufacturer's instructions.
Exterior plastic components
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•When the car is driven immediately after being washed, apply the
brakes several times in order to remove any moisture from the
brake linings.
•Engine cleaning agents should not be used when the engine is
warm. This constitutes a fire risk.
Water repellent glass (sideview mirrors/side
windows)–option
Cleaning water repellent glass
•Do not apply wax, degreasing agents, etc. to this glass. This could
damage the coating.
•Clean the glass surface with care to avoid scratching.


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158
Opening the hood, Engine compartment
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...press up and open the hoodPull the handle...
Opening the hood
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Engine compartment
1. Expansion tank - coolant 7. Brake fluid reservoir
2. Power steering fluid reservoir 8. Relay/fuse box
3. Washer fluid reservoir 9. Air cleaner
4. Dipstick - engine oil 10. Battery ( in the cargo
5. Radiator/cooling fan compartment)
6. Oil filler cap - engine
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159
Engine oil
Oil specifications
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Engine oil
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CAUTION!
•Not checking the oil level regularly can
result in serious engine damage if the oil
level becomes too low.
•Oil that is lower than the specified quality
can damage the engine.
•Always add oil of the same type and
viscosity as already used.
•Never fill oil above the MAX mark. This
could cause an increase in oil consump-
tion.
R-models
R-models are equipped with an oil level
warning system. If the engine oil level
becomes too low, the warning light in the
instrument panel will come on and a warning
will be displayed in the text window.

 

 
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165
Chapter 9 - Specifications
Label information 166
Dimensions and weights 167
Engine specifications 169
Oil/fluid specifications and volumes 170
Fuel system, Distributor ignition system, Suspension 171
Electrical system 172
Volvo On Call Roadside Assistance 173

1661 Loads and Tire Pressures
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2 Child safety latch label
3 Federal Motor Vehicle Safety Stan-
dards (FMVSS) specifications (USA)
and Ministry of Transport (CMVSS)
standards (Canada)
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