Folding Top Control Module
Operates a convertible roof — the most sensor-dependent mechanism on the vehicle. Raising or lowering a folding top is a choreographed sequence: windows drop, tonneau opens, latches release, the drive folds the roof through several linked joints, the cover closes, the windows rise. Every stage is confirmed before the next begins, because the alternative is a mechanism driving into itself. With the module unavailable the roof simply will not operate, and that refusal is protection — a roof stopped halfway is a far worse outcome.
Two causes dominate. The wiring crosses the moving joints between body and roof frame and between roof panels, flexing over the mechanism's full travel every cycle, so conductor fatigue is expected rather than unusual. And convertible drain channels at the base of the rear quarters block with debris and overflow into the very compartment holding the module and the hydraulics — a well-known cause of soaked electronics, and clearing them is maintenance rather than repair.
Worth knowing before it is needed: most designs have a manual override, usually releasing hydraulic pressure and unlatching by hand. Being caught with the roof down in rain and no way to raise it is the situation to avoid.
Also known as: convertible top module, roof control module, soft top module, cabriolet roof module, folding roof control unit
Referenced by 1 code
Codes involving this component (1)
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