ELECTROCHROMIC (EC) Diagnostics

Ensure that both the forward and rear sensors are not obstructed by hang items, tape, stickers, window decals, etc.

1. With the ignition in the ON position:

   Use a flashlight or other light source, to illuminate the forward facing sensor. The mirror should remain/adjust to a high reflectance state. This simulates daytime conditions.

   Cover the forward facing sensor with a finger or dark material. Using a flashlight or other light source, illuminate the rear-facing sensor. The mirror should dim to a low reflectance state. This simulates nighttime glare conditions.

   Cover the forward and rear facing sensors with fingers or dark material. The mirror should remain/adjust to a high reflectance state. This simulates nighttime non-glare conditions.

2. With the ignition in the ON position, the BRAKE applied and the vehicle in REVERSE:

Cover the forward facing sensor with a finger or dark material. Using a flashlight or other light source, illuminate the rear-facing sensor. The mirror should remain in a high reflectance state. This simulates nighttime driving conditions, providing a clear view while backing up.

If the EC Comp/Temp Mirror does not respond as indicated, replace the EC Comp/Temp Mirror in accordance with the Service Information.