## How to Map Panel Buttons on an Android Car Head Unit? (MCU key programming / Steering wheel & panel button configuration guide)

### Symptoms:

After installing a custom-fit Android head unit with physical bezel buttons or rotary knobs, the hardware keys may not trigger the intended functions until the system's MCU key mapping app is properly configured.

### Solution:

For a comprehensive step-by-step video demonstration on how to access the key programming app, assign physical panel buttons, and save custom command layouts, follow the official video: [How to Map Panel Buttons on Android Car Head Unit](https://youtu.be/ShnE_zkY9s0).

<https://www.youtube.com/watch?v=ShnE_zkY9s0>

### Keywords:

Android head unit button mapping, MCU key programming car radio, panel button configuration, steering wheel and bezel controls setup, SMARTY Trend guide.