K4 HUD Installation Guide – Step-by-Step Setup for Your Heads-Up Display

Installation Guide: K4 Heads-Up Display (HUD)

Thank you for purchasing the K4 HUD. This guide is designed to help you install your new Heads-Up Display quickly, safely, and correctly. Please read through all instructions before beginning the installation to ensure optimal performance and safety.

How to Install

Before installation, please drive your car to outdoor places, not in garages or indoors, and open your car window;
Plug our provided USB cable into your car USB port, and plug the other end into your K4-HUD;
Put it on the dashboard. After powering on, the LEDs will flash as it begins searching for satellite signals; wait one minute. Once the signal stabilizes, it will display the current time and driving direction.

System Settings

1. In the normal working state of K4-HUD, Long-press the button to enter into the settings interface;

2. Scroll Up/Down the button to select your desired function setting, there are 5 function settings for you to choose;

-1. Timezone (Default 05: UTC+5)
-2. Speed Alarm Limit (Default Value:150KM/H)
-3. Brightness (Default: 0, Automatic Brightness)
-4. Speed Calibration (Default Value: 100)
-5. Display Mode (Default: 0, Automatic Switching)

3. Short press the button to confirm. Scroll Up/ Down the button to adjust the value;

4. Short press the button to save it; Release your hand, it will automatically back to the main interface.

Restore Factory Settings

Long press the [Middle] button while plugging in the USB cable.
Release the button when "0" is displayed in the center of the HUD. Factory reset complete.

FAQ

Does the HUD support switching between MPH and KM/H? How to change the speed unit?

Yes, The speed unit can be switched between KM/H and MPH
How to Switch: Scroll [ Down ] the button for a long time until the speed unit changed, then release your hand.

How to adjust the time?

Long-press the button to enter into setting interface;
Scroll up/down the button to adjust it to -1;
Short-press the button to confirm it;
Scroll up/down the button to adjust the value ( According to your local timezone,if your timezone is UTC+5, set it to 05; if your timezone is UTC-5, set it to -05);
Short-press the button to save it; Release your hand, it will automatically back to the main interface.

How to adjust the speed alarm limit?

Long-press the button to enter into setting interface;
Scroll up/down the button to adjust it to -2;
Short-press the button to confirm it;
Scroll up/down the button to adjust the value ( (Default:150, km/h);
Short-press the button to save it; Release your hand, it will automatically back to the main interface.

How to adjust the K4 Heads Up Display brightness?

Long-press the button to enter into setting interface;
Scroll up/down the button to adjust it to -3;
Short-press the button to confirm it;
Scroll up/down the button to adjust the value (0 is automatic brightness, 1 is the darkest, 2 is middle, 3 is the brightest);
Short-press the button to save it; Release your hand, it will automatically back to the main interface.

How to calibrate the speed on HUD? If the HUD speed is not consistent with the vehicle speed on the dashboard.

Long-press the button to enter into setting interface;
Scroll up/down the button to adjust it to -4;
Short-press the button to confirm it;
Scroll up/down the button to adjust the value(Default: 100). For example, If the vehicle speed is 100, the HUD shows 103, you can adjust the value to 97; If the vehicle speed is 100, the HUD shows 97, you can adjust the value to 103;
Short-press the button to save it; Release your hand, it will automatically back to the main interface.

How to adjust the display mode? only shows vehicle speed

Long-press the button to enter into setting interface;
Scroll up/down the button to adjust it to -5;
Short-press the button to confirm it;
Scroll up/down the button to adjust the value to 1 (0 is automatic switching, 1 is speed, 2 is time)
Short-press the button to save it; Release your hand, it will automatically back to the main interface.