The Subaru Techline has received multiple reports of stereo cameras being returned with issues of spider webs and debris on the hood assembly. Remember, these parts are serviceable for generation two eyesight systems on 2013-2014 Legacy/Outback and 2014-2016 Forester.
Once you have removed the lens hood assembly from the camera following the procedures in the applicable service manual, determine if the webs have contacted the lens itself as shown in the photo on the right. If they have, the lens hood must be replaced. If the webs can be removed without touching the camera lens, carefully remove them and reassemble the camera.
Always confirm proper system operation before returning the vehicle to the customer. Refer to the Service Manual or the EyeSight and Keyless Access with Push-Button Start (Module 923) Technicians Reference Booklet on STIS for further diagnostics information. Damage caused by outside influence is not a matter for warranty.