Warning light—driver braking required
Adaptive Cruise Control can exert brake force that is equivalent to approximately 40% of the vehicle's total braking capacity. In situations requiring more brake force than ACC can provide and if the driver does not apply the brakes, an audible signal from the Collision Warning system will sound and warning light will illuminate (see page 174) in the windshield to alert the driver to react.
NOTE
Strong sunlight, reflections, extreme light contrasts, the use of sunglasses, or if the driver is not looking straight ahead may make the visual warning signal in the windshield difficult to see.
WARNING
Adaptive Cruise Control only warns of vehicles detected by the radar sensor, see page 160. In some cases there may be no warning or the warning may be delayed. The driver should always apply the brakes when necessary.
See also:
Driving Dynamics: Chassis
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level of active safety, thanks to its sophisticated suspension system, high
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Exterior
Chief Designer Peter Horbury calls the XC90’s appearance “masculine, but not
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Accessory installation
We strongly recommend that Volvo owners install only genuine, Volvo-approved
accessories, and that accessory installations be performed only by a trained
and qualified Volvo service technicia ...