Honda 2014 Civic CNG Owner's Manual page 31

If a Tire Goes Flat
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Temporarily Repairing a Flat Tire
1. Remove the trunk floor lid.
2. Take the kit out of the case.
Place the kit face up, on flat ground
near the flat tire, and away from traffic.
Do not place the kit on its side.
Getting Ready to Temporarily Repair the Flat Tire
When making a temporary repair, carefully read the
instruction manual provided with the kit.
In cold temperatures, the sealant may not flow
easily. In this situation, warm it up for five minutes
before using.
2014 Civic CNG