Electrochromic Mirror - Troubleshooting: Overview

90bmw21 Group 51 Body Equipment
Bulletin Number 51 02 90 (3183)
Woodcliff Lake, NJ December 1990 Service Engineering
SUBJECT: BMW Electrochromic Mirror

MODELS: All so Equipped

General
Information: Detailed testing and troubleshooting instructions for the BMW Electrochromic Mirror have been developed. A copy of the instructions is attached.
Attachment to S.I. 51 02 90 (3183)


BMW ELECTROCHROMIC (ECM(TM)) MIRROR TESTING AND TROUBLESHOOTING INSTRUCTIONS

The BMW Electrochromic EC(TM) Mirror automatically detects and eliminates glare coming from the headlamps of following vehicles. The EC(TM) Mirror darkens gradually as glare increases. When glare subsides the mirror becomes clear again. The EC(TM) Mirror has a 3-position switch (OFF/ MIN/MAX) to turn on and select the sensitivity of the mirror. The mirror also has a reverse override function.