2004-2009 350Z Roadster Electric Soft Top: Roof Motors, Fifth-Bow, Storage-Lid, Switch and Controller Diagnosis

Explicit checked service relationships are limited to 97092-CE400 -> 97092-CE40A; 97100-CE400 and 97100-CE410 -> 97100-CE41A; 97090-CE400 -> 97090-CE40A; 90551-CE400 -> 90551-CE40A; 90552-CE400 -> 90552-CE40A; 97295-CE410 and 97295-CE420 -> 97295-CE40A; 97294-CE400 and 97294-CE420 -> 97294-CE40A; 97260-CE400 -> 97260-CE40A; 97178-CE401 -> 97178-CE40B; 97178-CE420 -> 97178-CE40C; 97118-CE400 -> 97118-CE40A; 97251-CE420 -> 97251-CE42A; 97150-CE410 and 97150-CE01A -> 97150-CE01B; 97151-CE420 and 97151-CE440 -> 97151-CE44A; 97151-CE422 and 97151-CE442 -> 97151-CE44B; 97131-CE405 -> 97131-CE40A; 97130-CE405 -> 97130-CE40A; and 97004-CE420 -> 97004-CE42A. The 01/2007 97100-CE40A regulator is a separate production branch, not a claimed successor to 97100-CE41A. The 08/2005 controller change from 285C1-CE400 to 285C1-CF400 is a production branch, not a claimed supersession or plug-and-play interchange. No early/late, left/right, Coupe/Roadster, 350Z/370Z or electric/hydraulic interchange is inferred.

Start with a US 350Z Roadster VIN, production month, installed labels/connectors and the exact point where the operating sequence stops. This Z33 system is electric: there is no hydraulic pump, fluid or cylinder to order. The checked RF chapters first require the operating-permission inputs, including ignition ON, brake pedal depressed, vehicle at 4 km/h (2 mph) or less and about 10 V or more; Nissan says to run the engine. The controller also sequences the passenger-seat tilt and full window lowering. Follow the model-year RF operation chart and symptom order before condemning a motor: front-lock state, OPEN/CLOSE switch, brake/speed/voltage, fifth-bow unlock and latch inputs, fifth-bow actuator, storage-lid locks/actuators and position inputs, both roof actuators, interference-prevention switches and controller power/wiring can stop the sequence. Several switches are built into a lock, plate or rail assembly rather than sold as a universal loose sensor. Match build date, side, quantity, connector/pins, gear/rod/cable arrangement, mounting points and every included component. A listing called complete must itemize both roof motors, fifth-bow regulator, lock/closure/opener pieces, both storage-lid lifting devices and locks, controller, switch-bearing plates/rails, harnesses, bands, linkages, rods, brackets and hardware; none is assumed. NTB03-122 applies only to the described 2004 symptom where the fifth bow advances about 1-2 inches per CLOSE press; it is not a general reset. The checked 2005 and 2009 RF chapters provide staged diagnosis and do not publish a consumer initialization shortcut. Manual operation is emergency-only, involves an extremely heavy storage lid and two-person handling, can leave the rear incompletely locked and in one direction requires destructive trim access. Do not use or publish it as a bypass or initialization method. After any repair, verify a complete open/close cycle, front latch and indicator, windows/seat interaction, clearances, glass contact, weather sealing and water leaks. Do not disturb factory-adjusted roof mounting brackets or locating sockets without the qualified body adjustment Nissan calls for, and do not drive with a partially open or incompletely locked roof.

Checked alternatives are exact-number used OEM components and specialist pre-owned/tested or rebuilt-when-applicable controller paths. Treat every motor or module rebuild claim as a service option only after RF diagnosis identifies that component; require the original label, bench-test scope, repaired elements, programming or setup statement, warranty, core/return terms and connector condition in writing. Seller claims that a controller is plug-and-play or that one number fits 2003-2009 do not override the 08/2005 factory production split. Used motors, switches, locks and linkages require donor/build evidence, functional testing, intact gears/rods/connectors and itemized contents. No universal aftermarket switch, hydraulic conversion, 370Z bungee or hydraulic part, generic fabric-top kit or manual-conversion hardware is represented as an equivalent factory repair.

US/LHD 2004-2009 350Z Roadster factory electric roof only; it is not hydraulic. Confirm VIN/build date, installed module/part label, side, quantity, connector and the exact sequence stage before ordering. The controller changes at 08/2005, and a separate fifth-bow regulator branch begins 01/2007; seller year ranges do not prove interchange. Several position switches are integral to a lock, plate or rail assembly. Check engine/voltage, brake, speed, front latch, switches, wiring and the RF operation chart before replacing a motor. NTB03-122 is symptom-specific, not a general reset. The checked RF chapters publish no consumer initialization shortcut. Emergency manual operation is not a bypass and can leave the roof incompletely secured; use qualified service and never drive with a partial or insecure roof.

Supersede reviewed 21 unique research sources for this guide. 9 also appear above as a seller or official action and are not repeated here; 12 additional citations follow.

Research last verified 2026-07-28.

1. Nissan Techinfo — source pageOpen source
2. Owners nissanusa — 2008 ZCoupe owner manualOpen source
3. 350z — rfOpen source
4. Nicoclub — service manualOpen source
5. My350z — ntb03 071a 381501d1496380741Open source
6. Tsbsearch — NTB03 122Open source
7. Nissan Parts Deal — open roof partsOpen source
8. Nissan Parts Deal — open roof partsOpen source
9. Nissan Parts Deal — open roof partsOpen source
10. Nissan Parts Deal — electrical unitOpen source
11. Nissan Parts Deal — electrical unitOpen source
12. Nissan Parts — 97090 CE40AOpen source