traction control VOLVO S40 2005 Owners Manual

pg. 40 Symbols on the left side of the instrument panel
Symbols on the left side of the instrument panel
Symbols - left side of instrument panel
1. Malfunction indicator light
As you drive, a computer called On-Board Diagnostics II (OBDII) monitors your car's engine, transmission,
electrical and emission systems. The CHECK ENGINE light will light up if the computer senses a condition that
potentially may need correcting. When this happens, please have your car checked by a Volvo retailer as soon as
possible.
A CHECK ENGINE light may have many causes. Sometimes, you may not notice a change in your car's behavior.
Even so, an uncorrected condition could hurt fuel economy, emission controls, and driveability. Extended driving
without correcting the cause could even damage other components in your car.
Canadian models are equipped with this symbol .
2. Anti-lock brake system (ABS)
If the warning light comes on, there is a malfunction of the ABS system (the standard braking system will still
function). The vehicle should be driven to a Volvo retailer for inspection. See page 113
for additional information.
Canadian models are equipped with this symbol .
3. Rear fog light
This symbol indicates that the rear fog light (located in the driver's side tail light cluster) is on.
4. Stability system STC or DSTC
This indicator symbol flashes when the STC (Stability and Traction control system) or the DSTC (Dynamic
Stability and Traction control system) is actively working to stabilize the car. See page 116
for more detailed
information.
5. Not in use
6. Fuel level warning light
When this light comes on, there are approximately 2.1 US gallons (8 liters) of fuel remaining in the tank.
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12 volt socket, stability system, auxiliary equipment
12 volt sockets
The 12 volt sockets can be used to plug in certain accessories such as cellular telephones, etc. The key must be in
position I (or higher) for the auxiliary socket to function. The auxiliary sockets can also be used for cigarette lighters,
which are available at your Volvo retailer.
NOTE: The cover should be kept on when the auxiliary socket is not in use.
Stability system STC or DSTC
The stability system - Stability and Traction Control (STC), or the optional Dynamic Stability and Traction Control
(DSTC) - activate automatically when the car is started. In certain situations, it may be necessary to disable the
system's anti-spin function, for example, while driving for a short period with tires of different dimensions.
To disable the anti-spin function:
Press the STC or DSTC button for approximately one second. The indicator light in the button will go out, and
STC/DSTC SPIN CONTROL OFF will be shown in the information display.
WARNING!
The car's handling and stability characteristics will be altered with the anti-spin function disabled.
NOTE: The anti-spin function will be automatically reactivated when the engine is started
Auxiliary equipment
The button to the right of the STC/DSTC button can be used for Volvo-installed optional or auxiliary equipment.
pg. 45 Lighting panel
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To return to the (D)rive position from M , move the gear selector to the left.
While driving
If you select the M position while driving, the gear that was being used in the (D)rive position will also initially be
selected in M position.
Move the gear selector forward (toward "+") to shift to a higher gear or rearward (toward "-") to shift to a lower
gear.
If you hold the gear selector toward "-", the transmission will downshift one gear at a time and will utilize the
braking power of the engine. If the current
pg. 109 Automatic transmission - Geartronic
speed is too high for using a lower gear, the downshift will not occur until the speed has decreased enough to allow the
lower gear to be used.
If you slow to a very low speed, the transmission will automatically shift down.
W - Winter/Wet driving mode - enhanced vehicle traction
Mode W reduces torque at the wheels, which helps improve traction when starting off on a slippery surface.
Once underway, turn off mode W to improve vehicle performance and fuel economy.
Mode W will only function if the gear selector is in the ( D)rive position.
Press the button near the base of the gear selector to engage/disengage this driving mode. The indicator light in the
button will light up when the function is engaged.
Automatic transmission - adaptive system
The automatic transmission is controlled by an adaptive control system that constantly monitors the way in which the
transmission functions. It senses and adapts each gear shift for optimal performance.
Cold starts (turbo engines)
When driving before the engine has reached its normal operating temperature, the transmission will shift up at slightly
higher engine speeds to heat the three-way catalytic converter as quickly as possible.
Kickdown
Automatic shift to a lower gear (kickdown) is achieved by depressing the accelerator pedal fully and briskly. An
upshift will occur when approaching the top speed for a particular gear or by releasing the accelerator pedal slightly.
Kickdown can be used for maximum acceleration or when passing at highway speeds.
NOTE: The gear selector must be in the D (Drive) position for kickdown to function.
Shiftlock override
Shiftlock prevents the gear selector from being moved out of Park unless the ignition key is in position II and the
brake pedal is depressed.
In certain cases it may be necessary to move the gear selector from the Park position manually, for example if the
battery is discharged.
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luggage load capacity is 650 lbs. (1400-750 (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 cargo 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 vehicle. Consult this
manual
1 to determine how this reduces the available cargo and luggage load capacity of your vehicle.
WARNING!
- Exceeding the permissible axle weight, gross vehicle weight, or any other weight rating limits can cause tire
overheating resulting in permanent deformation or catastrophic failure.
- Do not use replacement tires with lower load carrying capacities than the tires that were original equipment on the
vehicle because this will lower the vehicle's GVW rating. Replacement tires with a higher limit than the originals do
not increase the vehicle's GVW rating limitations.
1. See "Towing a trailer" on page 122
.
pg. 131 Uniform Tire Quality Grading
Uniform Tire Quality Grading
ALL PASSENGER VEHICLE TIRES MUST CONFORM TO FEDERAL SAFETY REQUIREMENTS IN
ADDITION TO THESE GRADES
Quality grades can be found, where applicable, on the tire sidewall between the tread shoulder and maximum
section width. For example:
Treadwear 200 Traction AA Temperature A
TREADWEAR
The treadwear grade is a comparative rating based on the wear rate of the tire when tested under controlled conditions
on a specified government test course. For example, a tire graded 150 would wear one and one half (1 1/2) times as
well on the government course as a tire graded 100. The relative performance of tires depends upon the actual
conditions of their use, however, and many depart significantly from the norm due to variation in driving habits,
maintenance practices and differences in road characteristics and climate.
TRACTION
The traction grades, from highest to lowest, are AA, A, B, and C, as measured under controlled conditions on specified
government test surfaces of asphalt and concrete. A tire marked C may have poor traction performance. The traction
grade assigned to this tire is based on braking (straight-ahead) traction tests and is not a measure of cornering (turning)
traction. WARNING!
The traction grade assigned to this tire is based on braking (straight-ahead) traction tests and is not a measure of
cornering (turning) traction.
TEMPERATURE
The temperature grades are AA (the highest), A, B, and C, representing the tire's resistance to the generation of heat
and its ability to dissipate heat when tested under controlled conditions on a specified indoor laboratory test wheel.
Sustained high temperature can cause the material of the tire to degenerate and reduce tire life, and excessive
temperature can lead to sudden tire failure. The grade C corresponds to a minimum level of performance that all
passenger vehicle tires must meet under the Federal Motor Safety Standard No. 109. Grades B and A represent higher
levels of performance on the laboratory test wheel than the minimum required by law. WARNING!
The temperature grade for this tire is established for a tire that is properly inflated and not overloaded. Excessive
speed, under-inflation, or excessive loading, either separately or in combination, can cause heat buildup and tire
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Safety system warning light22, 41
Seat belt maintenance16
Seat belt reminder16, 41
Seat belts14
SEE MANUAL43
SERVICE REQUIRED43
Shiftlock2
Side impact protection (SIPS) airbags25
Side marker light, replacing158
Speedometer38
Spin control - SC113
SRS warning light22
Stability44
Stability system113
Stability system STC or DSTC44
Start inhibitor (immobilizer)88
Starting the vehicle104
Station formats176
STC44, 113
Steering wheel adjustment53
Steering wheel keypad, audio system170
Steering wheel lock106
Stone chips, paint touch-up143
STOP ENGINE43
STOP SAFELY43
Storage compartments82
Subwoofer172
Sunroof (moonroof)59
Supplemental Restraint System - SRS17
T
Tachometer38
Tail light bulb holder, removing159
Technician certification191
Temperature gauge38
Three-way catalytic converter190
TIME FOR REGULAR SERVICE43
Tire inflation pressure tables127
Tires, changing135
Tires, general information124
Traction control - TC113
Transmission, automatic108
Tread wear indicator124
Trip computer47
Trip odometer38
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