Lane Keep (Lane Departure Prevention) Cannot Be Ready/Lane Keep (Lane Departure Prevention) Does Not Operate/Though Lane Keep (Lane Departure Prevention) Is Operating, The Vehicle Departs Out Of The Lane Due To Poor Assistance

Check for the presence of ECM lane departure prevention deactivation codes. Ref. to Eyesight (Diagnostics)>Lane Departure Prevention Assist Deactivate Code(s) Display .

Is a lane departure prevention deactivation code displayed?

Yes  : Perform the diagnosis for the displayed lane departure prevention deactivation code. Ref. to Eyesight (Diagnostics)>Lane Departure Prevention Assist Deactivate Code(s) Display .

No  : Go to  2 .

Using the check list (adaptive cruise steering • lane keep assist • lane departure prevention), check the following and respond to it. Ref. to EYESIGHT (DIAGNOSTICS)>DIAGNOSTICS WITH PHENOMENON>INSPECTION>CHECK LIST (ADAPTIVE CRUISE STEERING LANE KEEP ASSIST LANE DEPARTURE PREVENTION) .

• Does the current status apply to the condition that use of adaptive cruise steering • lane keep assist • lane departure prevention is not desired?
• Does the current status apply to the condition or the object, such as a white line, that is hard to be recognized by the stereo camera?
• Does the current status apply to the condition or the object, such as a preceding vehicle, that is hard to be recognized by the stereo camera?
• Does the current status apply to the condition that sufficient performance of lane keeping cannot be achieved?

Is there a relevant item in the check list?

Yes  : When there is a relevant item, it can be the cause of malfunction. Eliminate the cause, and check that the malfunction has been improved.

No  : Go to  3 .

Check the windshield glass and the dashboard. Ref. to EYESIGHT (DIAGNOSTICS)>GENERAL DESCRIPTION>INSPECTION>WINDSHIELD GLASS AND DASHBOARD .

Is the check result OK?

Yes  : Go to  4 .

No  : Repair or replace the faulty portion according to the inspection result.

Check the front wiper Ref. to EYESIGHT (DIAGNOSTICS)>GENERAL DESCRIPTION>INSPECTION>FRONT WIPER .

Is the check result OK?

Yes  : Go to  5 .

No  : Repair or replace the faulty portion according to the inspection result.

Check the optical axis of the headlight. Ref. to LIGHTING SYSTEM>HEADLIGHT ASSEMBLY>ADJUSTMENT .

Is the check result OK?

Yes  : Go to  6 .

No  : Repair or replace the faulty portion according to the inspection result.

Check the stereo camera. Ref. to EYESIGHT (DIAGNOSTICS)>GENERAL DESCRIPTION>INSPECTION>STEREO CAMERA .

Is the check result OK?

Yes  : Go to  7 .

No  : Repair or replace the faulty portion according to the inspection result.

Check the tires and wheel alignment Ref. to FRONT SUSPENSION>WHEEL ALIGNMENT .

Is the check result OK?

Yes  : Go to  8 .

No  : Repair or replace the faulty portion according to the inspection result.

Perform optical axis adjustment of the stereo camera. Perform optical axis adjustment of the stereo camera. Ref. to EYESIGHT>CAMERA ADJUSTMENT, INSPECTION .

Was the fault fixed after adjusting the optical axis?

Yes  : The current state is normal.

No  : Replace the stereo camera. Ref. to EYESIGHT>STEREO CAMERA .