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Axxess Introduces AXTC “Total Control” Interfaces for BMW/Mini Cooper, GM and Mercedes

Jan 6, 2020

Holly Hill, FL – January 6, 2020 - Axxess® by Metra Electronics®  is introducing eight new products in its Total Control Interface Series™ for radio replacement integration. A new solution for BMW and Mini Cooper, six new solutions for GM and one new solution for Mercedes have been added to the Total Control Interface Series (AXTC) product line. The AXTC product line was first launched at CES 2019 as a new data interface that combines all of the features of Axxess’ steering wheel control technology with additional patent-pending features into one robust solution for new radio installations. When replacing a radio, the interface utilizes patented Auto-Detect technology1 that automatically detects the vehicle type, radio connection and preset controls, while allowing the ability to dual assign steering wheel controls. This low-profile interface provides NAV outputs, accessory power and a 12-volt illumination output, in addition to retaining R.A.P. and depending on the vehicle, may also retain chimes, balance and fade.

The Total Control Interface Series is designed to work with all major radio brands and both amplified and non-amplified audio systems (depending on the application). In addition to Auto-Detect, it can be manually programmed for most vehicles and will retain most settings even after battery disconnection or interface removal. Axxess has provided user-friendly instructions and an upgraded simple LED feedback process for easier programming. These new products will be on display at CES 2020 and shipping soon.


Total Control Interface Series Harnesses:

Designed for select BMW/Mini Cooper 2006-up* vehicles (non-amplified)



Designed for select GM 2000-2013 vehicles (non-amplified & amplified)



Designed for select GM 2006-2012 vehicles (non-amplified & amplified)



Designed for select GM 2006-up* vehicles (non-amplified & amplified)


Designed for select GM 2019-up* vehicles (non-amplified)



Designed for select GM 2019-up* vehicles (non-amplified)



Designed for select GM 2012-2016 vehicles (non-amplified)



Designed for select Mercedes 2001-up* vehicles (non-amplified & amplified)


*See the application chart at for up-to-date, vehicle specific information.

Product Specifications:

  • Provides accessory power (12-volt 10-amp)
  • Retains R.A.P. (Retained Accessory Power)
  • Provides 12 volt illumination output
  • Provides NAV outputs (parking brake, reverse, and speed sense)
  • May retain chimes, balance and fade (varies by interface)
  • Designed to be compatible with all major radio brands
  • Auto detects vehicle type, radio connection, and preset controls
  • Ability to dual assign steering wheel control buttons
  • Retains memory settings even after battery disconnection or interface removal
  • Micro “B” USB updatable

(1) U.S. Patent No.8257147


These new solutions will be on display with Metra Electronics at CES from January 7-10, 2020 at booth 5211 in the North Hall of the Las Vegas Convention Center. New Axxess products can also be seen online at starting January 7.

About Metra Electronics®

At Metra, 12volt installation and integration is our passion. We strive to continuously offer the highest quality products to meet the fluctuating technological challenges of the automotive world.  We actively listen to our customers’ requests and invest resources into developing the highest quality dash kit and harness solutions. We make dash kits for more vehicle applications than anyone else in the world. That’s why we’ve been known as “The Installer’s Choice” ® for more than 72 years. Our other brands include: Axxess®, T-SPEC®, The Install Bay®, Heise LED Lighting Systems®, iBEAM Vehicle Safety Systems®, Shuriken High Performance Batteries®, Raptor®, Ballistic®, AmmoTenna®, Metra PowerSports®, Saddle Tramp®, Metra Marine® and Daytona Lights™. Metra’s expertise in connectivity solutions is also applied to its division of premium home theater and surveillance products, Metra Home Theater Group®. For ordering information and pricing, visit Metra Electronics online at or call 386-257-2956.