WARNING: This page is about a different car, the 2011 BMW 750xi, 2011 BMW 750Lxi, 2010 BMW 750xi, and 2010 BMW 750Lxi. However, it is still accessible from the selected car via links, so may be relevant.
Repair kit and glue cartridges are marked with a date (expiry).
Date (1) refers to the calendar week and year (KW/JJJJ).
The adhesive cannot be used after this date (1).
Fig 1: Identifying Date On Kit And Glue Cartridges