HONDA 1984 Accord Sedan - Owner's Manual - Manual (Page 445)

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uu When Driving u ECON Button
Driving
ECON Button
The ECON button turns the ECON mode on and off.
The ECON mode helps you improve your fuel economy by adjusting the
performance of the engine, transmission, heating and cooling system
* /climate
control system * , and cruise control.
*
* Not available on all models