Use this guide to choose between Adapter-X V2, STMV1 / STMV1-H and STMV1-971. The correct kit depends on your vehicle, the replacement steering wheel style, multifunction and heating configuration, and whether you want a functional drive-mode switch.
Choose by upgrade goal
Add a functional Mode Switch
Choose Adapter-X V2 for supported 991.1 and 981 upgrades using a compatible newer OEM steering wheel. It synchronizes the steering wheel Mode Switch with the vehicle's center-console drive-mode controls.
AI-edited visual reference; heating depends on configuration.
Add multifunction or heating
Choose STMV1 for multifunction support without steering wheel heating. Choose STMV1-H when the vehicle and replacement wheel use compatible heating hardware.
Install a 971-style steering wheel
Choose STMV1-971 for a compatible Panamera 971-style OEM wheel. It supports the required wiring and selected multifunction/heating configurations. The Mode Switch does not control drive modes.
GT wheel photo: Suncoast Parts · 991.2 / 718 GT multifunction wheel. Images identify wheel styles; choose your kit using the compatibility details.
Quick vehicle guide
997.1 / 987.1
Functional Mode Switch: Not supported
Classic multifunction / heating: STMV1; heating is not supported. Adding multifunction controls requires a 997.613.289.01 steering control module and PIWIS coding.
971-style wheel: STMV1-971; confirm required control module and coding.
997.2 / 987.2
Functional Mode Switch: Not supported
Classic multifunction / heating: STMV1 / STMV1-H
971-style wheel: STMV1-971
991.1 / 981
Functional Mode Switch: Adapter-X V2
Classic multifunction / heating: STMV1 / STMV1-H
971-style wheel: STMV1-971
Cayenne 958.1
Adapter-X V2 for Cayenne 958.1: Temporarily out of stock due to a shortage of required components. Contact us with your model year and photos for availability and to confirm your configuration.
Classic multifunction / heating: STMV1 / STMV1-H
971-style wheel: STMV1-971
Panamera 970
Functional Mode Switch: Not supported by Adapter-X V2
Classic multifunction / heating: STMV1 / STMV1-H
971-style wheel: STMV1-971
This guide is a starting point, not a final parts list. Exact compatibility also depends on the original steering wheel, replacement wheel, control module, clock spring, paddles, heating hardware and factory vehicle options.
Identify your current steering wheel generation
997.1 / 987.1 steering wheel
997.2 / 987.2 steering wheel
991.1 / 981 / 958.1 / 970 steering wheel
Common replacement wheel styles
991.2 / 718 / 95B-style wheel
Use Adapter-X V2 when a supported vehicle needs functional Mode Switch control. Use STMV1 / STMV1-H when Mode Switch control is not required.
Panamera 971-style wheel
Use STMV1-971 for this wheel style. The kit includes the required internal wiring harness for supported configurations.
Important installation notes
- GPS Adapter supports OEM Porsche steering wheels and equipment only. Compatibility with non-OEM control modules, wheels, paddles or stereos is not guaranteed.
- A vehicle originally equipped without multifunction or heating may require a different steering control module, clock spring, activation code and PIWIS coding.
- Steering wheel and airbag work is safety-critical. Use the official workshop procedure and a qualified Porsche technician if you are not experienced with these systems.
After choosing a product, review the installation and coding guides before installation.