3.2 Removing sealant

WARNING: This page is about a different car, the 2013 BMW 550i GT, 2012 BMW 550i GT, 2011 BMW 550i GT, and 2010 BMW 550i GT. However, it is still accessible from the selected car via links, so may be relevant.

Hydrochloric acid is created when PVC sealing material is heated to temperatures in excess of 180 °C.
Remove PVC sealant with a rotating wire brush only or heat material with a hot air blower to max. 180°C and remove with a spatula.
Ensure that all enclosed areas are well ventilated or are provided with direct extractor facilities.