2019 VOLVO S90 TWIN ENGINE sensor

DRIVER SUPPORT
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* Option/accessory.353
Activating/deactivating Cross TrafficAlert
The driver can choose to deactivate the CTA81
function as follows:
Press the Cross Traffic Alertbutton in the center display'sFunction view.
GRAY button indicator light - CTA is deacti-vated.
GREEN button indicator light - CTA is acti-vated.
CTA is automatically activated each time theengine is started.

Related information
Cross Traffic Alert* (p. 352)
Cross Traffic Alert limitations
CTA82 functionality may be reduced in certainsituations.
CTA does not function optimally in all situationsand has certain limitations. The CTA sensors, forexample, cannot "see" through other parkedvehicles or objects blocking the vehicle.
Below are a few examples of situations in whichCTA's field of vision may be initially limited andapproaching vehicles may therefore not bedetected until they are very close to your vehicle:
The vehicle is parked very far into a parking space.
In a diagonal parking space, CTA may be completely"blind" on one side of your vehicle.
CTA's blind zone.
CTA's field of vision.
However, as you back your vehicle slowly out of aparking space, CTA's field of vision changes inrelation to the obstructing vehicle/object and itsblind zone is reduced.
81Cross Traffic Alert82Cross Traffic Alert

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DRIVER SUPPORT
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Examples of further limitations
Dirt, ice and snow covering the sensors mayreduce functionality and prevent the systemfrom providing warnings. For additional infor-mation, see the section "Recommendedmaintenance for Cross Traffic Alert".
CTA is automatically deactivated if a trailer,bicycle holder or similar is connected to thevehicle's electrical system.
For CTA to function optimally, bicycle hold-ers, luggage racks or similar should not bemounted on the vehicle's towbar.

Related information
Cross Traffic Alert* (p. 352)
Recommended maintenance for CrossTraffic Alert (p. 354)
Recommended maintenance forCross Traffic Alert
For optimal performance, it is important tokeep the areas in front of the sensors clean.
Do not attach any objects, tape or decals tothe surface of the sensors.
Keep the marked area clean (on both the left and rightsides of the vehicle)83.
The CTA sensors are located on the inside ofeach of the rear fenders/bumpers and are also
used by the BLIS84 and Rear Collision Warningfunctions.
CAUTION
Repair of BLIS and CTA components orrepainting of the bumper may only be per-formed by a workshop – an authorized Volvoworkshop is recommended.

Related information
Cross Traffic Alert* (p. 352)
BLIS* (p. 347)
Rear Collision Warning (p. 346)
83Note: This illustration is general and details may vary depending on model.84Blind Spot Information

DRIVER SUPPORT
* Option/accessory.355
Cross Traffic Alert messages
A number of messages related to CTA85 may bedisplayed in the instrument panel.Some examples of symbols and messages are shown in the table below.
MessageMeaning
Blind spot sensor
Service required
The system is not functioning as intended. Contact a workshop ‒ an authorized Volvo workshop is recommended.
Blind spot system off
Trailer attached
BLIS and CTA have been deactivated because a trailer has been connected to the vehicle's electrical system.
A text message can be erased by briefly pressing
the button in the center of the right-sidesteering wheel keypad.
If the message persists: Contact a workshop ‒ anauthorized Volvo workshop is recommended.

Related information
Cross Traffic Alert* (p. 352)
85Cross Traffic Alert

DRIVER SUPPORT
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369
Lane Keeping Aid symbols andmessages
A number of symbols and messages related to
Lane Keeping Aid LKA105 may be displayed inthe instrument panel.Some examples of symbols and messages are shown in the table below.
Symbol MessageMeaning
Driver support system
Reduced functionality Service required
The system is not functioning as intended. Contact a workshop ‒ an authorized Volvo work-shop is recommended.
Windscreen sensor
Sensor blocked, see Owner's manual
The camera's ability to detect the lane in front of the vehicle is reduced.
Lane Keeping Aid
Apply steering
LKA's steering assistance is disabled when the driver's hands are not on the wheel. Followthe instructions and steer the vehicle.
Lane Keeping Aid
Apply steering
LKA will go into standby mode until the driver begins steering the vehicle again.
105Lane Keeping Aid

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Limitations of Run-Off Mitigationwith steering assistance
In certain demanding driving conditions, thefunction may not be able to properly assist thedriver. In these situations, it is recommendedthat it is turned off.
Examples of such situations include:
road work
winter driving conditions
narrow roads
poor road surfaces
a very sporty driving style
bad weather with reduced visibility
roads with indistinct or no lane markings
sharp edges or lines other than the lane'sside markings
when the power steering works at reducedpower, e.g. during cooling due to overheating(see section “Speed-dependent steeringforce”).

NOTE
The function uses the vehicle's combinedcamera and radar unit, which has certain gen-eral limitations; see sections "Camera limita-tions" and "Radar sensor limitations".
Related information
Steering assistance at risk of collision(p. 372)
Speed-dependent steering wheel resistance(p. 270)
Camera limitations (p. 330)
Radar sensor limitations (p. 325)
Steering assistance during collisionrisks from oncoming traffic
This sub-function can help assist a distracteddriver who has not noticed that the vehicle isveering into oncoming traffic.
The function provides assistance by swerving your vehi-cle back into your own lane.
Oncoming vehicles
Own vehicle
The function is active at speeds between60-140 km/h (37-87 mph) on roads with clearlyvisible traffic lane markings/lines.
If your vehicle is starting to veer from your ownlane and a vehicle is approaching from the oppo-site direction, this function can help the driversteer the vehicle back into its own lane.

DRIVER SUPPORT
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Related information
Steering assistance at risk of collision(p. 372)
Steering assistance during collision risksfrom oncoming traffic (p. 375)
Limitations of steering assistanceduring collision risks fromoncoming traffic
The function may have limited functionality incertain situations and not intervene, e.g.:
for smaller vehicles such as motorcycles
on roads that do not have clear lane mark-ings
if more than half of your vehicle has movedinto the adjacent lane
outside the speed range 60-140 km/h(37-87 mph)
when the power steering works at reducedpower - e.g. during cooling due to overheat-ing (see section "Speed-dependent steeringforce").
Functionality may also be reduced in other situa-tions, such as:
road work
winter driving conditions
narrow roads
poor road surfaces
a very sporty driving style
bad weather with reduced visibility.
In these demanding driving conditions, the func-tion may not be able to properly assist the driver.
In these situations, it is recommended that it isturned off.

NOTE
The function uses the vehicle's combinedcamera and radar unit, which has certain gen-eral limitations; see sections "Camera limita-tions" and "Radar sensor limitations".

Related information
Steering assistance at risk of collision(p. 372)
Steering assistance during collision risksfrom oncoming traffic (p. 375)
Speed-dependent steering wheel resistance(p. 270)
Camera limitations (p. 330)
Radar sensor limitations (p. 325)

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DRIVER SUPPORT
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NOTE
The function uses the vehicle's combinedcamera and radar unit, which has certain gen-eral limitations; see sections "Camera limita-tions" and "Radar sensor limitations".
In addition to the camera and radar sensor, thefunction also uses the vehicle's rearward-facingradar, which has certain general limitations thedriver should be aware of. See additional informa-tion in the section "BLIS limitations".

Related information
Steering assistance at risk of collision(p. 372)
Steering assistance during collision risksfrom behind* (p. 378)
Speed-dependent steering wheel resistance(p. 270)
Camera limitations (p. 330)
Radar sensor limitations (p. 325)
BLIS limitations (p. 349)

DRIVER SUPPORT
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Symbols and messages for steeringassistance during collision risks
A number of symbols and messages related tothe function may be displayed in the instrumentpanel.Some examples of symbols and messages are shown in the table below.
Symbol MessageMeaning
Collision avoidance assistance
Automatic intervention
When the function is activated, a message will appear to alert the driver.
Windscreen sensor
Sensor blocked, see Owner's manual
The camera's ability to detect the lane in front of the vehicle is reduced.
A text message can be erased by briefly pressing
the button in the center of the right-sidesteering wheel keypad.
If the message persists: Contact a workshop ‒ anauthorized Volvo workshop is recommended.

Related information
Steering assistance at risk of collision(p. 372)