AXTC-MB3 - Interface de contrôle automobile Axxess - Free user manual and instructions

Product Type	Electronic Interface Module
Brand	Axxess
Model	AXTC-MB3
Compatibility	Select vehicles (refer to vehicle fit guide)
Dimensions	2.5 x 1.5 x 0.5 in (63.5 x 38.1 x 12.7 mm)
Weight	0.2 lb (90 g)
Input Voltage	12V DC (vehicle battery)
Operating Temperature	-40°F to 185°F (-40°C to 85°C)
Primary Functions	Vehicle integration, audio signal retention, chime preservation
Wiring Harness	Plug-and-play T-harness included
Installation	Professional installation recommended
Material	ABS plastic housing, copper wire
Certifications	CE, RoHS
Warranty	1 year limited warranty
Manual Language	English (4 pages PDF)
Maintenance	Keep dry, avoid direct sunlight, no cleaning required
Safety	Disconnect battery before installation
Repairability	Non-repairable, replace if faulty

Frequently Asked Questions - AXTC-MB3 Axxess

What is the Axxess AXTC-MB3 used for?

The AXTC-MB3 is an electronic interface module designed to integrate aftermarket audio systems with factory vehicle electronics, preserving features like chimes and steering wheel controls.

Which vehicles are compatible with the AXTC-MB3?

Compatibility varies; refer to the vehicle fit guide provided with the product or on the Axxess website. It typically supports select GM, Ford, and Chrysler models.

Do I need professional installation?

While the module is plug-and-play, professional installation is recommended to ensure proper wiring and avoid damage to the vehicle's electrical system.

Can I retain factory chimes and warning tones?

Yes, the AXTC-MB3 is engineered to preserve factory chimes and warning tones when replacing the factory radio with an aftermarket unit.

Does this module support steering wheel controls?

Yes, it retains steering wheel audio controls (volume, track, etc.) when used with compatible aftermarket radios.

What is included in the package?

The package includes the AXTC-MB3 module, a wiring harness, and installation instructions.

How do I update the firmware?

Firmware updates are available via the Axxess website. You need a USB cable (not included) and a Windows PC to perform the update.

What safety precautions should I take?

Always disconnect the vehicle's battery before installation to prevent short circuits or airbag deployment.

Can I use this module with a non-Axxess harness?

It is designed to work with the included specific T-harness. Using other harnesses may cause malfunction or damage.

Is there a warranty on this product?

Yes, the AXTC-MB3 comes with a 1-year limited warranty against manufacturing defects.

USER MANUAL AXTC-MB3 Axxess

APPLICATIONS

Mercedes

C Class 2016-2021

ML/GL 2016-2021

Mercedes SWC (Steering Wheel Control) and Data Interface 2016-2021

INTERFACE FEATURES

• Designed for non-amplified models
• Provides accessory power (12 volt 10-amp)
• Provides wires for multimedia radios (park brake, reverse, speed sense)
• Retains audio controls on the steering wheel
• 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 (nonvolatile memory)
• Provides illumination output
• Micro-B USB updatable

INTERFACE COMPONENTS

• AXTC-MB3 Interface
  • LD-SWXC-MB3 Harness
  • 3.5mm Adapter

Product Info

TABLE OF CONTENTS

Connections: LD-SWCX-MB3 2
Programming......3
Troubleshooting....4
Connector View 4

Visit AxxessInterfaces.com for more detailed information

about the product and up-to-date vehicle specific applications.

TOOLS & INSTALLATION ACCESSORIES REQUIRED

• Crimping tool and connectors or
- Solder gun, solder, and heat shrink
- Tape
- Wire cutter
- Zip-ties
- Multimeter

ATTENTION: With the key out of the ignition, disconnect the negative battery terminal before installing this product. Ensure that all installation connections, especially the air bag indicator lights, are plugged in before reconnecting the battery or cycling the ignition to test this product.

NOTE: Refer also to the instructions included with the aftermarket accessory before installing this device.

CONNECTIONS: LD-SWCX-MB3 HARNESS

PROGRAMMING

Open the driver's door, and keep open during the programming process.

Cycle the ignition on.

Connect the AXTC-MB3 harness to the AXTC-MB3 Interface.

Locate the Volume Up button on the the steering wheel. Program the interface by tapping the Volume Up button until the LED stops flashing.

The LED light will flash Green & Red while the interface programs the radio to the steering wheel controls. Once programmed, the LED light will go out, then produce a pattern which will identify the radio type installed.

The LED light will go out, then once again quickly flash Green & Red while the interface programs itself to the vehicle. Once programmed, the LED light will go out again, then turn solid Green.

Cycle the ignition off, then back on.

Test all functions of the installation for proper operation.

TROUBLESHOOTING

1.2.

LED Light

Reset Button

If the interface fails to function, press and release the reset button, then repeat the programming process from step 5 to try again.

Final LED Feedback

At the end of programming the LED light will turn solid Green which indicates programming was successful. If the LED light didn't turn solid Green, reference the list below to understand which programming section the problem may stem from.

LED Light	Radio Programming Section	Vehicle Programming Section
Solid Green	Pass	Pass
Slow Red Flash	Fail	Pass
Slow Green Flash	Pass	Fail
Solid Red	Fail	Fail

Note: If the 3.5mm jack is not connected to the radio the LED feedback can still show Pass, as an open connection will be shown by the interface as an Alpine radio.

QR Code Scan Here

Further troubleshooting steps and information can be located at: axxessinterfaces.com

CONNECTOR VIEW

(4) corner wires only shown, just for reference

Pin-11 Yellow Pin-1 Yellow

Pin View of Connector

Pin-20 Blue/Pink (labeled on connector) Pin-10 Blue/Pink

Having difficulties? We're here to help.

Contact our Tech Support line at: 386-257-1187

Or via email at: [e-mail]

Tech Support Hours (Eastern Standard Time)

Monday - Friday: 9:00 AM - 7:00 PM

Saturday: 10:00 AM - 5:00 PM

Sunday: 10:00 AM - 4:00 PM

KNOWLEDGE IS POWER

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