The stuff Ford puts in the pump kit "WILL" ruin the sensor.

I put non-runflat Michelin's on my Cooper JCW and bought the Slime kit as well as the Slime aerosol cans. Slime will "NOT" ruin the tire sensors.

The Mini & BMW people all carry it when they ditch the runflat tires.

I would use the aerosol first. I do also carry a tire plug set with me if needed.

If the puncture is on the side wall there is not much you can do except call AAA or Ford