Honda CIVIC Sedan 2020 Owner's Manual page 114

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Shift Up Backlight
Shift Up Backlight
* Not available on all models
112
* *
/Shift Up Alarm
The shift up backlight blinks and the alarm
sounds when the tachometer reading
approaches the red zone.
* *
1Shift Up Backlight /Shift Up Alarm
You can use the customized features to turn the shift
up backlight feature and the shift up alarm feature
on and off.
2 Customized Features P. 337