Volvo 2006 S60 Owner's Manual - Four-C Active Chassis System

2006 Volvo S60 

automatically between the front and rear wheels. Under normal driving conditions, most engine's power 

is directed to the front wheels. However, if there is any tendency for the front wheels to spin, an 

electronically controlled coupling distributes power to the wheels that have the best traction. 

Tire dimensions 

Volvo recommends that you always drive on tires of the same brand, size, construction (radial), tread 

pattern, load-, speed-, traction-, temperature-, and treadwear rating. Never drive on mixed tires, except 

for brief periods when the temporary spare tire is in use. 

Always use properly inflated tires of correct dimensions. Tire size and inflation pressures are shown on 

the tire inflation pressure placards, located on the driver's side B-pillar (the structural member at the side 

of the vehicle, at the rear of the driver's door opening), or on the inside of the fuel filler door on 

Canadian models. 

Temporary Spare 

The temporary spare tire is for temporary, low-speed, short-distance use only. Replace it with a full-size 

tire as soon as possible. Do not drive on the temporary spare at speeds above 50 mph (80 km/h) or for 

distances greater than 50 miles (80 km.) 

Never install snow chains on a temporary spare.

pg. 95 Starting and driving 

Four-C active chassis system

Four-C active chassis  

The FOUR-C (Continuously Controlled Chassis Concept) active chassis system, consisting of Comfort 

and Sport modes, is available as an option.

NOTE:  

The S60 R has a standard FOUR-C system consisting of Comfort, Sport, and Advanced sport modes. 

The buttons for controlling these driving modes are located in center instrument panel, above the 

ventilation system panel vents, see the illustration below. These buttons can be pressed at any time to 

change driving modes. An indicator light in the selected button will come on to indicate the driving 

mode that is currently selected. 

This system is based on a number of sensors that continuously monitor factors such as the car's lateral 

and vertical movements, speed, and movements of the wheels. The sensors receive data up to 500 times 

per second, which is used to provide extremely fast and precise adjustment of each shock absorber. The 

system adjusts the stiffness of the shock absorbers approximately 100 times per second.

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