2024 Subaru Ascent Radar Sensors User Guide
The 2024 Subaru Ascent incorporates modern radar sensors into its EyeSight Driver Assist Technology, which improves safety with features such as adaptive cruise control, pre-collision braking, and automated emergency steering, providing full protection for both drivers and passengers.
2024 Subaru Ascent Specs, Price, Features, Mileage and Review
Subaru BSD/RCTA (if equipped) Guide
The BSD/RCTA consists of rear corner radars with Blind Spot Detection and Rear Cross Traffic Alert. These functions enable the system to detect objects or vehicles to the rear, drawing attention to the driver when changing a lane or when driving in reverse.
WARNING
The driver is responsible for driving safely. Always be sure to check the surroundings when changing lanes or reversing the vehicle. The system is designed to assist the driver to change lanes or reverse safely by monitoring the rear and side areas of the vehicle. However, you cannot rely on this system alone in assuring the safety during a lane change or reversing. Overconfi-dence in this system could result in an accident and lead to serious injury or death. Since the system operation has various limitations, the flashing or illumination of the BSD/RCTA approach indicator light may be delayed or the warning buzzer may be delayed or inoperative, even if there is a vehicle travel-ing in a neighboring lane or ap-proaching your vehicle from either side.
The driver is responsible for paying attention to the rear and side areas of the vehicle.
System features
BSD/RCTA consists of the following func-tions.
- To detect a vehicle in a blind spot on an adjacent lane or a vehicle approaching at high speeds (Blind Spot Detection) . To detect a vehicle approaching from the right or left while reversing the vehicle (Rear Cross Traffic Alert)
The system uses radar sensors for the above functions.
NOTE
The BSD/RCTA radar sensor has been certified by the radio wave related laws of the U.S. and other FCC compliant countries and Canada. When driving in other countries, certification of the country where the vehicle is driven must be obtained. For certification in the U.S. and other FCC compliant countries and Canada, refer to “Certification for the BSD/RCTA” .
Blind Spot Detection (BSD)
- Operating range
The system warns the driver of dangers as follows.
- If the system detects a vehicle in the blind spot, the BSD/RCTA approach indicator light(s) on the outside mirror (s) will illuminate.
BSD/RCTA approach indicator light
- If the driver operates the turn signal lever in the direction which the BSD/RCTA approach indicator light is illumi-nating, the corresponding BSD/RCTA approach indicator light will flash.
Lane Change Assist (LCA)
- Operating range
The system warns the driver of dangers as follows.
- If the system detects a vehicle approaching at a high speed in the neighboring lanes, the BSD/RCTA ap-proach indicator light(s) on the outside mirror(s) will illuminate.
- If the driver operates the turn signal lever in the direction which the BSD/RCTA approach indicator light is illumi-nating, the corresponding BSD/RCTA approach indicator light will flash.
Rear Cross Traffic Alert (RCTA)
- Operating range
The system notifies the driver of another vehicle approaching from either side when driving in reverse. This feature helps the driver check the rear and side areas of the vehicle when moving backward.
If the system detects a vehicle approach-ing from either side while moving back-ward, it warns the driver of dangers in the following way.
- The BSD/RCTA approach indicator
light(s) on the outside mirror(s) flashes. . A warning buzzer sounds. - An icon appears on the rear view camera screen (audio/navigation moni-tor).
Limitations of the detectability of RCTA
Since the detectability of RCTA is limited, the RCTA may not operate properly in angled parking.
Example 1
- The detection range of the radar sensors
- Area out of detection range of the radar
sensors
A Vehicle that may not be detected
B Parked vehicle
WARNING
An approaching vehicle (A) may not be detected because the detection
range is limited by the parked vehicle (B). Always be sure to check the surroundings when reversing the vehicle.
Example 2
- The detection range of the radar sensors
C Vehicle that may be detected
NOTE
The system may detect that a vehicle (C) is passing in front of your vehicle. Always be sure to check the surroundings when reversing the vehicle.
System operation
Operating conditions
The BSD/RCTA will operate when all of the following conditions are met.
- The ignition switch is in the “ON” position.
- The BSD/RCTA warning indicator and BSD/RCTA OFF indicator are turned off.
- The vehicle is driven at speeds above 7 mph (12 km/h) (except when rever-sing).
- The select lever is in the “R” position (RCTA only). The BSD/RCTA will not operate in the following situations.
- The BSD/RCTA OFF indicator is on. . The vehicle speed is below 6 mph (10 km/h) even when the BSD/RCTA OFF indicator remains off (except when reversing).
2024 Subaru Ascent Specs, Price, Features, Mileage and Review
NOTE
- In the following case, the BSD/RCTA will stop operating and the BSD/RCTA warning indicator will appear. If the BSD/RCTA warning indicator appears, have your vehicle in-spected at a SUBARU dealer as soon as possible.
- When a malfunction occurs in the system, including the BSD/RCTA approach indicator light
- In the following cases, the BSD/ RCTA will temporarily stop operat-ing (or may stop operating) and the BSD/RCTA OFF indicator will ap-pear.
- When the radar sensor becomes significantly misaligned (If the orientation of the radar sensor is shifted for any reason, readjust-ment is required. Have the sensor adjusted at a SUBARU dealer.)
- When a large amount of snow or ice sticks to the rear bumper surface around the radar sensors
- When the vehicle is driven on a snow-covered road or in an en-vironment in which there are no objects around (such as in a desert) for a long time
- When the temperature around the radar sensors increased exces-sively due to long driving on uphill grades in summer, etc.
- When the temperature around the radar sensors becomes extre-mely low
- When the vehicle battery voltage lowers
- When the vehicle battery becomes overvoltage
When the above conditions are corrected, the BSD/RCTA will re-sume operation and the BSD/RCTA OFF indicator will disappear. How-ever, if the BSD/RCTA OFF indicator has appeared for a prolonged time, have the system inspected at a SUBARU dealer as soon as possi-ble.
- The detectability of the radar sensors is restricted. The BSD/RCTA detection may be impaired and the system may not operate properly under the following conditions.
- When the rear bumper around the radar sensors is distorted
- When ice, snow or mud adheres to the rear bumper surface around the radar sensors
- When stickers, etc. are affixed on the areas of the radar sensors on the rear bumper
- During adverse weather condi-tions such as rain, snow or fog
- When driving on wet roads such as snow-covered roads or through puddles
- The radar sensors may not detect or may have difficulty detecting the following.
- Small motorcycles, bicycles, pedestrians, stationary objects on the road or road side, etc.
- Vehicles with body shapes that the radar may not reflect (vehi-cles with a low body height such as sports cars or a trailer with no cargo)
- Vehicles that are not approaching your vehicle even though they are in the detection area (either on a neighboring lane to the rear or beside your vehicle when reversing) (The system deter-mines the presence of approach-ing vehicles based on data de-tected by the radar sensors.)
- Vehicles traveling at significantly different speeds
- Vehicles driving parallel to your vehicle at almost the same speed for a prolonged time
- Oncoming vehicles
- Vehicles in a lane beyond the neighboring lane
- Vehicles traveling at a significantly lower speed that you are trying to overtake
- On a road with extremely narrow lanes, the system may detect vehi-cles driving in a lane next to the neighboring lane.
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