When the passenger airbag off indicator comes on

The indicator comes on to alert you that the passenger’s front airbag has been turned off.
This occurs when the weight sensors detect about 65 lbs (29 kg) or less, the weight of an infant or small child, on the seat.
Infants and small children should always ride properly restrained in a back seat.
If the front passenger seat is empty, the passenger’s front airbag will not deploy and the indicator will come on.
Passenger Front Airbag Off Indicator
To ensure the passenger is detected properly, confirm that:
The passenger airbag off indicator may come on and go off repeatedly if the total weight on the seat is near the airbag cutoff threshold.
Have your vehicle checked by a dealer as soon as possible if:
Do not allow an adult passenger to ride in the front seat when the indicator is on.
Supplemental Restraint System (SRS) Indicator
Airbag CareHonda Civic Owners Manual. Checking the Coolant
Check the amount of coolant in the reserve
tank.
If the coolant level is below the MIN mark,
add the specified coolant until it reaches
the MAX mark.
Inspect the cooling system for leaks.
Engine Coolant
WARNING
Removing the reserve tank cap while the
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