3.2 Removing Sealant

WARNING: This page does not describe the selected car, but rather 18 other vehicles, including the 2015 BMW Alpina B7L xDrive, 2015 BMW Alpina B7 xDrive, 2015 BMW 750i xDrive, 2015 BMW 750Li xDrive, and 2015 BMW 740Li xDrive. 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.