Chrysler 2009 300 SRT - Manual (Page 382)

TIREFIT KIT
Small punctures, particularly those in the tread, can be
sealed with TIREFIT. Foreign objects (e.g., screws or
nails) should not be removed from the tire. TIREFIT can
be used in outside temperatures down to approximately
-4°F (-20°C).
The TIREFIT system is located under an access panel in
the trunk.
TIREFIT Location
380 WHAT TO DO IN EMERGENCIES