3.2 Removing sealant

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.

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.