Mercury MerCruiser Owner's Manual page 64

Section 3 - On the Water
6. To disengage auto heading, turn the steering wheel or press the "AUTO HEADING"
button. A single beep sounds when it disengages. If the steering wheel is used to
disengage auto heading, the "RESUME" button LED turns on and a single beep
sounds. While the LED is lit, you can press the "RESUME" button to resume auto
heading.
7. If the ERC handles are moved to neutral, Auto Heading turns off, a single beep sounds,
and the "STANDBY" light turns on. You cannot resume your course by pressing the
"RESUME" button.
Page 56
a
c
d
a - Port "TURN" button
b - Starboard "TURN" button
c - "RESUME" button
d - "AUTO HEADING" button
a - "OFF" button
b - Current heading
c - Drive positions
d - Engine RPM
b
35568
a
b
d
c
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90-899883295 JUNE 2008