Volvo XC90: Audio, media and internet / HD Radio™ sub-channels
In many cases, a main HD Radio station (FM wavebands only) will also have sub-channels
offering additional types of programming or music.
Sub-channels

Example of an HD Radio station with sub-channels
If any sub-channels are available, they will listed below the main channel on
the screen. In this example, WILD-FM HD2 is a sub-channel.
Selecting sub-channels
To listen to a station's sub-channel(s), tap the station on the screen or press
the forward/ back arrow keys on the right-side steering wheel keypad or below the
screen.
Sub-channels can also be saved as radio favorites.
If you tap a sub-channel favorite, it may take up to 6 seconds before
the channel becomes audible. If you tap a station while you are out of digital range
of the transmitter, No reception will be displayed.
HD Radio is deactivated when the car leaves the factory.
When listening to an HD Radio station and driving through areas with weak HD
signals (fringe areas), you may experience that the radio repeatedly switches between
analog/digital and digital/analog reception...
Limitations
Main channel vs. sub-channels (FM only): The main channel is the
only channel that can receive in hybrid mode (both digital and analog)...
Other information:
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an oncoming vehicle in an intersection.
Sector in which City Safety can
detect an oncoming vehicle in crossing traffic.
In order for City Safety to detect an oncoming vehicle in situations where there
is a risk of a collision, that vehicle must be within the sector in which City Safety
can analyze the situation...
The vehicle's trip computer registers data while driving such as mileage,
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To help promote fuel-efficient driving, data is recorded on both current and
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