COMPASS REFERENCE GUIDE
Is there a display in
compass window?
Does the compass
display read “C”?
Is the incorrect direction
displayed?
Is the mirror receiving
+12V?
Press compass
display button (if
available).
SET ZONE:
1. Press and hold compass display /
power button (if available).
2. Release button when zone number
(1-15) is displayed.
3. Use zone map to verify your
location.
4. Use compass display / power
button to select correct zone.
5. Allow selected zone to clear from
display.
6. Press and hold compass display /
power button until “C” is displayed
ENSURE:
1. EC mirror harness power wire
is securely tapped into OEM
harness.
2. Ignition wire is receiving +12V.
3. Ground wire is securely
attached to vehicle ground.
Contact OEM dealership
for replacement harness.
Is the zone location set to
your location?
*OEM = Original Equipment Manufacturer (ex. Ford, GM, etc)
* This is intended as a tool for self-diagnosis. Gentex advises
contacting your local dealership for assistance.
YES
STILL NO
NO
NO
CALIBRATE:
Follow calibration
instructions listed.
YES
Compass functions to design
intent.
YES
YES
NO
NO
START
Make sure vehicle is
running or key is turned
to the “on” position
to ensure mirror is
receiving power.
NO
YES