Ford 2009 Flex Owner's Manual page 306

Roadside Emergencies
Do not remove any foreign object that has pierced the tire. If a puncture
is located in the tire sidewall, stop and call roadside assistance.
1. Remove the valve cap from the tire valve.
2. Unwrap the clear tube from the compressor housing.
3. Remove the tube cap and fasten the metal connector of the tube to
the tire valve, turning clockwise. Make sure the connection is tightly
fastened.
4. Plug the power cable into the 12V
power point in the vehicle.
5. Remove the warning sticker found on the canister and place it on the
top of the instrument panel or the center of the dash.
6. Start the engine (only if the vehicle is outdoors or in a
well-ventilated area).
7. Turn dial (1) counterclockwise to
the sealant position. Turn on the kit
by pressing control button (2).
306
2009 Flex (471)
Owners Guide, 2nd Printing
USA (fus)