Subaru EyeSight is one of the most widely deployed driver assistance systems in the US — available on nearly every Subaru sold since 2016 and standard on most 2020+ models. If you own a Subaru Outback, Forester, Impreza, Crosstrek, Legacy, or Ascent from the past several years, you almost certainly have EyeSight.
Adding a dash cam to a Subaru with EyeSight requires care. Get it wrong and you'll interfere with the stereo camera system — disabling collision avoidance, lane departure warning, and adaptive cruise control. Get it right and you have both systems working independently, covering different functions.
How EyeSight Works and Why It Matters for Dash Cam Placement
EyeSight uses two color cameras mounted on either side of the rearview mirror, pointing forward through the windshield. These cameras work as a stereo pair — the distance between them provides depth perception that enables 3D object detection, following distance measurement, and pedestrian identification.
The stereo camera system requires:
- An unobstructed, clean view through the windshield between the two camera positions
- No objects mounted between or directly in front of the two cameras that could block their field of view or create light interference
- A windshield surface free of stickers, heavy tinting, or objects that degrade the optical path
Subaru explicitly warns against placing anything — stickers, suction mounts, electronic devices — in the EyeSight camera area of the windshield. Doing so can impair the system and may trigger an EyeSight warning light on the dashboard.
Where You Can and Cannot Mount a Dash Cam
Avoid: The center of the upper windshield between the two EyeSight cameras. This is typically a 12–16 inch wide zone centered behind the rearview mirror, up near the top of the windshield.
Safe mounting positions:
- Lower center windshield: Below the EyeSight camera area, in the center of the windshield below the A-pillar junction line. This is the most common and safest position for a standard dash cam — below EyeSight, center for optimal forward view.
- Lower passenger side: Below the EyeSight zone on the passenger side. Provides forward view without any proximity to the stereo cameras.
- Dashboard mount: A low-profile mount on the dashboard itself, angled up to capture through the windshield. Completely outside the EyeSight zone.
Note: Subaru also cautions against suction mounts on windshields in any position due to the risk of the mount falling and obstructing the driver's view — an adhesive mount on the lower windshield is the preferred option for Subaru applications.
Will a Dash Cam Affect EyeSight Performance?
If mounted correctly (outside the camera zone), no. The two systems operate completely independently — EyeSight's cameras and your dash cam are separate devices with separate power supplies and separate processors. They don't interfere electronically.
Interference only occurs when a dash cam is physically mounted in the EyeSight camera's field of view, blocking or distorting the optical path. If your dash cam is below or to the side of the EyeSight camera area, you will have no interaction between the systems.
Confirming correct installation: after mounting the dash cam, check the EyeSight status indicator on the dashboard (a green icon on the ADAS display). If EyeSight is operating normally, the icon is green. If the icon has changed to an error state or the EyeSight unavailable warning appears, the camera position is interfering and needs to be adjusted.
Recommended Dash Cam Models for Subaru EyeSight Vehicles
The camera itself doesn't need to be "EyeSight compatible" — any standard dash cam mounted in the correct position works. What matters is the mount type:
- Adhesive mounts: Preferred for Subaru windshields. More secure than suction mounts on curved EyeSight-era Subaru windshields. 3M VHB adhesive holds without risking a dropped camera obstructing the driver's view or the EyeSight cameras.
- Low-profile mounts: A compact camera with a short mount profile is preferable in the lower windshield position — keeping the camera as close to the glass as possible minimizes the visual obstruction for the driver.
- Wide-angle lens: Compensates for the lower mounting position. A 140–150° wide-angle lens at lower windshield position captures comparable road width to a 120° lens at the rearview mirror position.
The Nexar Beam is frequently used in Subaru EyeSight vehicles due to its compact form factor and included adhesive mount. It's mounted in the lower center windshield position, below the EyeSight camera zone, with no reported interference.
Hardwiring in Subaru EyeSight Vehicles
Hardwiring to a Subaru's fuse box is straightforward — the process is the same as in any vehicle. Subaru fuse boxes are typically located in two locations: a primary box under the hood and a secondary passenger compartment fuse box (often on the driver's side under the dash).
For parking mode power, connect to a switched fuse (one that loses power when the ignition is off) and a constant fuse (one that remains live). The hardwire kit uses both to detect ignition status and apply the voltage cutoff correctly.
Consult your Subaru owner's manual or a Subaru-specific forum for the fuse layout of your specific model year. Fuse locations and amperage vary across model years — using the wrong fuse or amperage can cause issues with the vehicle's systems, including potentially the EyeSight system if the wrong circuit is interrupted.
Parking Mode and EyeSight
EyeSight is inactive when the vehicle is parked and the ignition is off. It does not interact with parking mode dash cam recording in any way. A dash cam in parking mode captures footage independently of EyeSight — EyeSight doesn't affect what the dash cam records, and the dash cam doesn't affect EyeSight's operation during subsequent drives (assuming correct mounting position).
One Setup Note for Subaru Outback and Legacy
The Outback and Legacy 2020+ generation moved EyeSight to a new camera design with a wider baseline — the two cameras are mounted further apart than in previous generations. This means the "avoid" zone is wider than on earlier Subaru models. When in doubt, mount below the A-pillar line in the lower center windshield — this is below the EyeSight zone for all Subaru EyeSight generations and all model variants.