Convertible top cannot be opened or closed, or has sporadic malfunctions.
Convertible top function disrupted and warning lamp on the switch flashes. Convertible top wiring harness is scuffed in the area of the left C-pillar due to a sharp-edged bolt. The consequence is a break in wiring or short circuit to ground.
Open the convertible top half way. Uncover the convertible top wiring harness and repair it. See Fig. 1.
After the repair, fit the cover caps on the sharp-edged bolt. See Fig. 2.
In the case of new vehicles about to be delivered to the customer, fit the caps as a preventive measure.

Wiring harness scuffed behind the bolt.

Fit cover caps on the sharp-edged bolt.