Mr12Volt Mercedes Benz MOST Bus NTG 4.5 4.7 CarPlay & AA Interface High End

Wireless Apple CarPlay & Android Auto for Mercedes-Benz NTG 4.5 / 4.7 System

Model: P3000-MB45
Direct MOST Fiber Integration – No AUX

Upgrade your factory Mercedes-Benz NTG 4.5 / NTG 4.7 infotainment system with MR12volt, adding Wireless Apple CarPlay and Android Auto while preserving full OEM functionality.

Designed for vehicles equipped with Mercedes-Benz NTG 4.5 / NTG 4.7 system and MOST fiber optic audio network, this interface integrates directly with the factory display, controls, and amplifier through the digital MOST system.

✔ Full factory sound quality
✔ Seamless OEM integration

Compatible Vehicles

Compatible with Mercedes-Benz vehicles equipped with NTG 4.5 / NTG 4.7 system

• Mercedes-Benz A-Class (W176) — 2012–2015
• Mercedes-Benz B-Class (W246) — 2012–2015
• Mercedes-Benz C-Class (W204) — 2011–2014
• Mercedes-Benz CLA-Class (C117) — 2013–2015
• Mercedes-Benz CLS-Class (W218) — 2011–2014
• Mercedes-Benz E-Class (W212 / C207 / A207) — 2011–2015
• Mercedes-Benz GLK-Class (X204) — 2012–2015
• Mercedes-Benz ML-Class (W166) — 2011–2015
• Mercedes-Benz GL-Class (X166) — 2012–2015
• Mercedes-Benz SLK-Class (R172) — 2011–2015

⚠ Only compatible with head units equipped with SD card slot on the front panel

⚠ Important Installation Notes

• TV coding is required – but no hassle.

MR12volt module comes with a built-in TV enabling function, so no third-party coding tools are required

• How to activate the TV function:

Press and hold “C” + “Return” buttons simultaneously for approximately 10 seconds — the TV option will appear in the video menu, allowing access to MR12volt

• If a factory TV tuner module is present, it must be bypassed using the supplied optical loop connector

• Professional installation recommended

Control Method

MR12volt is accessed through the TV menu.

• Select TV in the video menu to launch the MR12volt interface

• Apple CarPlay and Android Auto are controlled through the factory COMAND controller

Direct Digital MOST Integration

Unlike AUX-based CarPlay interfaces that rely on analog audio input, MR12volt integrates digitally through the MOST fiber optic network, delivering true OEM-level sound quality.

AUX-based CarPlay solutions

• Use analog audio transmission

• May reduce sound clarity

• Can introduce signal delay

MR12volt MOST integration

✔ No AUX required

✔ Direct digital audio path

✔ No analog conversion

✔ Maintains factory sound quality

✔ Compatible with Base, Harman Kardon and Logic 7 sound systems

✔ Works with factory amplifier

Designed to preserve Mercedes-Benz OEM audio performance.

Smartphone Connectivity

• Wireless Apple CarPlay & Android Auto

• Wired Apple CarPlay & Android Auto

• Wireless MirrorLink (Android – CarLetter required)

Use navigation, Spotify, Apple Music, Waze, Google Maps and calls directly on your factory display.

Camera & Multimedia Support

• Reverse camera input

• Front camera input

• Left / Right blind spot camera input

• Supports aftermarket cameras up to AHD 1080P

• USB video and music playback

OEM Feature Retention

MR12volt retains the following factory features:

• OEM microphone

• Factory parking sensors display

• Steering wheel controls

• Factory display integration

Switch seamlessly between the original Mercedes interface and Apple CarPlay / Android Auto.

Advanced Audio Control

• 15-band DSP equalizer

• Independent navigation / media / microphone volume control

• Apple Lossless supported

• Enhanced Bluetooth call clarity

• Bluetooth audio streaming

Optimized for Mercedes-Benz factory audio systems.

Frequently Asked Questions

Does this require AUX?

No. Direct MOST fiber optic integration.

Does it work with Harman Kardon / Logic 7 sound systems?

Yes. Fully compatible.

How do I access MR12volt?

Select TV in the video menu.

Does it replace the factory screen?

No. This is a retrofit interface that integrates with the original system.

What rear camera is recommended for MR12volt?

MR12volt supports any aftermarket rear camera up to AHD 1080P resolution.

Firmware & Long-Term Support

• USB firmware upgrade supported

• Ongoing compatibility updates