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Home >> Subaru >> 2017 >> Forester 2.0XT Touring >> Repair and Diagnosis >> Accessories & Equipment >> Drivers Assistance Systems - ADAS >> SUBARU Eyesight System (Driver Assist) (Diagnostics) >> Diagnostics with Phenomenon >> Diagnostic Procedure With Phenomenon >> Lane Departure Warning, Sway Warning, Forward Vehicle's Start Monitoring Function

Lane Departure Warning, Sway Warning, Forward Vehicle's Start Monitoring Function

Phenomenon Check Item Note
1 Lane departure warning does not operate. Or the lane departure warning is released automatically. (1) Check that the lane departure warning OFF indicator light goes off. If this indicator light illuminates, the operation is not performed.
(2) Using CHECK LIST (LANE DEPARTURE WARNING, SWAY WARNING, FORWARD VEHICLE'S START MONITORING FUNCTION), check the following and respond to it.
  1. Is this applied to the condition that the lane departure warning does not operate or is difficult to operate?
  2. Is this applied to the condition that the lane departure warning OFF indicator light illuminates?
Check list (lane departure warning, sway warning, forward vehicle's start monitoring function) Ref. to EyeSight (DIAGNOSTICS)>Diagnostics with Phenomenon>DIAGNOSTIC PROCEDURE WITH PHENOMENON>CHECK LIST (LANE DEPARTURE WARNING, SWAY WARNING, FORWARD VEHICLE'S START MONITORING FUNCTION) .
When there is a relevant item in the check list, it can be the cause of malfunction. Eliminate the cause, and check that the malfunction has been improved. If not solved, the stereo camera may be malfunctioning.
2 Lane departure warning operates improperly. Or the lane departure warning is not released.
  1. Using CHECK LIST (LANE DEPARTURE WARNING, SWAY WARNING, FORWARD VEHICLE'S START MONITORING FUNCTION), check the following and respond to it.

  1. Is this applied to the condition that the vehicle lane is recognized erroneously and the lane departure warning may operate?
Check list (lane departure warning, sway warning, forward vehicle's start monitoring function) Ref. to EyeSight (DIAGNOSTICS)>Diagnostics with Phenomenon>DIAGNOSTIC PROCEDURE WITH PHENOMENON>CHECK LIST (LANE DEPARTURE WARNING, SWAY WARNING, FORWARD VEHICLE'S START MONITORING FUNCTION) .
When there is a relevant item in the check list, it can be the cause of malfunction. Eliminate the cause, and check that the malfunction has been improved. If not solved, the stereo camera may be malfunctioning.
3 Lane departure warning OFF indicator light does not go off.
Or the lane departure warning OFF indicator light illuminates automatically.
(1) Check that this failure occurs during engine start. Light illumination for a while after the engine start is a normal. Even if the engine switch is turned off and the engine is restarted, the status before the engine switch off is maintained.
(2) Check EyeSight temporary stop code to see if temporary stop has occurred. If the EyeSight temporary stop code is displayed, check the diagnosis from the List of EyeSight temporary stop code, and perform the corresponding operations. Ref. to EyeSight (DIAGNOSTICS)>EyeSight Temporary Code(s) Display .
If the cancel code is not displayed, go to (3).
(3) Check the lane departure warning OFF indicator light. Inspection of lane departure warning OFF indicator light Ref. to EyeSight (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC B28B7 LDP OFF SWITCH .
4 Lane departure warning OFF indicator light does not illuminate. Or the lane departure warning OFF indicator light goes off automatically. (1) Check the lane departure warning OFF indicator light. Inspection of lane departure warning OFF indicator light Ref. to EyeSight (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC B28B7 LDP OFF SWITCH .
5 Sway warning does not operate.
Or the sway warning is released automatically.
(1) Check that the lane departure warning OFF indicator light goes off. If this indicator light illuminates, the operation is not performed.
(2) Using CHECK LIST (LANE DEPARTURE WARNING, SWAY WARNING, FORWARD VEHICLE'S START MONITORING FUNCTION), check the following and respond to it.
  1. Is this applied to the condition that the sway warning may not operate?
  2. Is this applied to the condition that the lane departure warning OFF indicator light illuminates?
Check list (lane departure warning, sway warning, forward vehicle's start monitoring function) Ref. to EyeSight (DIAGNOSTICS)>Diagnostics with Phenomenon>DIAGNOSTIC PROCEDURE WITH PHENOMENON>CHECK LIST (LANE DEPARTURE WARNING, SWAY WARNING, FORWARD VEHICLE'S START MONITORING FUNCTION) .
When there is a relevant item in the check list, it can be the cause of malfunction. Eliminate the cause, and check that the malfunction has been improved. If not solved, the stereo camera may be malfunctioning.
6 Sway warning operates improperly.
Or the sway warning is not released.
  1. Using CHECK LIST (LANE DEPARTURE WARNING, SWAY WARNING, FORWARD VEHICLE'S START MONITORING FUNCTION), check the following and respond to it.

  1. Is this applied to the condition that the sway warning may operate improperly?
Check list (lane departure warning, sway warning, forward vehicle's start monitoring function) Ref. to EyeSight (DIAGNOSTICS)>Diagnostics with Phenomenon>DIAGNOSTIC PROCEDURE WITH PHENOMENON>CHECK LIST (LANE DEPARTURE WARNING, SWAY WARNING, FORWARD VEHICLE'S START MONITORING FUNCTION) .
When there is a relevant item in the check list, it can be the cause of malfunction. Eliminate the cause, and check that the malfunction has been improved. If not solved, the stereo camera may be malfunctioning.
7 Forward vehicle's start monitoring function does not operate. Or the forward vehicle's start monitoring function is released automatically.
  1. Using CHECK LIST (LANE DEPARTURE WARNING, SWAY WARNING, FORWARD VEHICLE'S START MONITORING FUNCTION), check the following and respond to it.

  1. Is this applied to the condition that the forward vehicle's start monitoring function does not operate even when the preceding vehicle has already started?
Check list (lane departure warning, sway warning, forward vehicle's start monitoring function) Ref. to EyeSight (DIAGNOSTICS)>Diagnostics with Phenomenon>DIAGNOSTIC PROCEDURE WITH PHENOMENON>CHECK LIST (LANE DEPARTURE WARNING, SWAY WARNING, FORWARD VEHICLE'S START MONITORING FUNCTION) .
When there is a relevant item in the check list, it can be the cause of malfunction. Eliminate the cause, and check that the malfunction has been improved. If not solved, the stereo camera may be malfunctioning.
8 Forward vehicle's start monitoring function operates improperly. Or the forward vehicle's start monitoring function is not released.
  1. Using CHECK LIST (LANE DEPARTURE WARNING, SWAY WARNING, FORWARD VEHICLE'S START MONITORING FUNCTION), check the following and respond to it.

  1. Is this applied to the condition that the forward vehicle's start monitoring function operates even when the preceding vehicle has not yet started?
Check list (lane departure warning, sway warning, forward vehicle's start monitoring function) Ref. to EyeSight (DIAGNOSTICS)>Diagnostics with Phenomenon>DIAGNOSTIC PROCEDURE WITH PHENOMENON>CHECK LIST (LANE DEPARTURE WARNING, SWAY WARNING, FORWARD VEHICLE'S START MONITORING FUNCTION) .
When there is a relevant item in the check list, it can be the cause of malfunction. Eliminate the cause, and check that the malfunction has been improved. If not solved, the stereo camera may be malfunctioning.