power steering VOLVO XC90 T8 2018 Owner´s Manual

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Pages: 686, PDF Size: 11.51 MB

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Page 476 of 686

VOLVO XC90 T8 2018 Owner´s Manual STARTING AND DRIVING
* Option/accessory.
474
Trailer Stability Assist *
Trailer Stability Assist (TSA 8
) is a function
designed to help stabilize a vehicle that is tow- ing a trailer when the vehicle

STARTING AND DRIVING
* Option/accessory.
474
Trailer Stability Assist *
Trailer Stability Assist (TSA 8
) is a function
designed to help stabilize a vehicle that is tow- ing a trailer when the vehicle and trailer havebegun to sway. The function is part of the Elec- tronic Stability Control system ESC 9
.
Reasons for swayingA vehicle towing a trailer may begin to sway for various reasons. Normally this only occurs at highspeeds. However, if the trailer is overloaded orunevenly distributed, e.g. too far back, there is arisk of swaying even at low speeds. Swaying may be caused by factors such as:
• The vehicle and trailer are hit by a sudden, strong crosswind.
• The vehicle and trailer are traveling on anuneven road or over a bump.
• Sudden movements of the steering wheel.
Once swaying has begun, it can be difficult orimpossible to stop it. This makes the vehicle andtrailer difficult to control and there is a risk ofswerving into oncoming traffic or driving off theroad.
Trailer Stability Assist functionTrailer Stability Assist continuously monitors thevehicle's movements, particularly lateral move- ments. If swaying is detected, the brakes areapplied individually on the front wheels, which hasa stabilizing effect on the vehicle and trailer. Thisis often enough to enable the driver to regaincontrol of the vehicle. If the Trailer Stability Assist function's first attempt is not adequate to stop the swayingmotion, the brakes are applied on all wheels andengine power is temporarily reduced. As theswaying motion begins to decrease and the vehi-cle and trailer have once again become stable,TSA stops regulating the brakes/engine powerand the driver regains control of the vehicle.
NOTE
Trailer Stability Assist is deactivated if the driver selects the sport mode by deactivating
ESC in the center display's menu system.
Trailer Stability Assist may not intervene if the driver tries to compensate for the swaying motionby moving the steering wheel rapidly, becausethe system will then not be able to determine if itis the trailer or the driver causing the swaying.
When Trailer Stability Assist is activated, the
ESC symbol is
displayed in the instrument panel.
Related information
• Driving with a trailer (p. 472)
• Electronic Stability Control (p. 274)
8
Trailer Stability Assist
9 Electronic Stability Control

Page 499 of 686

VOLVO XC90 T8 2018 Owner´s Manual AUDIO, MEDIA AND INTERNET
497
Selecting sub-channels
To listen to a station's sub-channel(s), tap the station on the screen or press the forward/backarrow keys on the right-side steering wheel key

AUDIO, MEDIA AND INTERNET
497
Selecting sub-channels
To listen to a station's sub-channel(s), tap the station on the screen or press the forward/backarrow keys on the right-side steering wheel key-pad or below the screen. Sub-channels can also be saved as radio favor- ites. If you tap a sub-channel favorite, it may take up to 6 seconds before the channel becomes audi-
ble. If you tap a station while you are out of digital range of the transmitter,
No reception will be
displayed.
Related information
• HD Radio
™ (p. 494)
• Activating and deactivating the HD Radio
™
(p. 496)
• Changing waveband and radio station (p. 491)
• Searching for a radio station (p. 492)
• HD Radio
™ limitations (p. 497)
HD Radio™ limitations
Limitations
• Main channel vs. sub-channels (FM only)
:
The main channel is the only channel that can receive in hybrid mode (both digital andanalog). If a frequency has sub-channels,they are broadcast in digital mode only. Themain FM channel will be displayed as, forexample, "WRIF-FM HD1". The sub-FMchannels will be displayed as"WRIF-FMHD2", "WRIF-FM HD3", etc.
• Reception coverage area
: Due to current
IBOC transmitter power limitations, thereception coverage area in digital mode issomewhat more limited than the station'sanalog coverage area. Be aware that, like allradio transmission technology, terrain, time ofday, vegetation and buildings can have apositive or negative effect on radio reception.
• Analog to digital/digital to analog blend-ing
: Analog to digital blending will occur as
the signal strength reaches a preset thresh-old in the receiver. This will be noticeable infringe areas (areas with weak reception) andis normal.
NOTE
There may be a noticeable difference in sound quality when a change from analogueto digital or digital to analogue occurs, suchas:
• Volume increase or decrease
• Equalizer settings, i.e., Bass/ Midrange/Treble cut or boost
• Time alignment (Digital program materialin extreme cases can be as much as 8seconds behind the analogue). This willnoticeable as a "stuttering" effect.
The above items are dependant on thebroadcaster's equipment settings and donot indicate a fault in the vehicle's radioreceiver or antenna systems .
Related information
•HD Radio
™ (p. 494)
• Activating and deactivating the HD Radio
™
(p. 496)
• HD Radio
™
sub-channels (p. 496)