Keep It Clear: Why ADAS and Windshield Accessories Don’t Mix

Many modern cars come with Advanced Driver Assistance Systems (ADAS), a tech framework that supports features like pedestrian detection, lane departure warning, and collision prevention. These systems rely on cameras and sensors, usually mounted inside the cabin near the windshield or rearview mirror. Just like your eyes need an unobstructed view to drive, ADAS cameras need a clear, open line of sight to do their job.

The Problem with Windshield & Rearview Accessories

Common spots for hanging air fresheners, decorative charms, or stickers often overlap with where ADAS cameras are located. If you’ve recently bought an ADAS-equipped car, placing accessories in these areas could block sensors, reduce their effectiveness, or cause errors. Your car’s user manual will often warn against installing anything that may obstruct these areas.

How Accessories Block Your Safety Tech

ADAS cameras are typically installed right in front or behind your car’s rearview mirror, facing forward to scan the road. Placing an accessory here can fall directly in their field of view.

For example, the 2024 Subaru Outback with Subaru’s EyeSight ADAS warns against placing stickers or objects:

• Around the rearview mirror.
• On top of the dashboard.

These obstructions can cause the system to misread its surroundings, continuously detect a false obstacle, or trigger warning messages.

More Than Just Blocking  Light Reflection Issues

Even if you place items outside the prohibited zones, they can still reflect light into the camera lenses, affecting performance. Toys, ornaments, or shiny stickers can bounce glare into the system, leading to reduced accuracy or false readings.

The Right Approach

If you love decorating your car, stick to areas well away from the windshield’s upper section and the rearview mirror zone. Consider placing accessories lower in the cabin, on side vents, or in cup holders to keep the ADAS view crystal clear.

FAQs About ADAS & Windshield Accessories

Q1: What is ADAS?

Advanced Driver Assistance Systems help drivers with safety features like lane departure warnings, adaptive cruise control, and pedestrian detection.

Q2: Why shouldn’t I hang accessories near the rearview mirror?

The cameras are often positioned there, and any obstruction can block their field of view, reducing ADAS performance.

Q3: Can stickers on the windshield affect ADAS?

Yes. Stickers, both inside and outside the windshield, can block or distort camera vision, leading to errors.

Q4: What about glare from objects?

Even if not directly in the camera’s path, shiny or reflective objects can bounce light into the lens, affecting accuracy.

Q5: Is this warning for all cars?

Yes, any ADAS-equipped vehicle benefits from keeping the windshield and rearview mirror area clear. Always check your owner’s manual for specific prohibited zones.