Question 1

The device won’t start or shuts down right after starting.

Accepted Answer

Please confirm the following:
1. Avoid using a power splitter 
   Power splitters can cause unstable power supply and lead to malfunctions.
2. Check power cable connection 
   Make sure the cable is firmly connected and not loose.
   If using a fuse-tap power cable, confirm the wiring:
    • Red wire: ACC power
    • Yellow wire: Constant power
    • Black wire: Ground (connect to metal surface)
3. Test with power bank or USB power source (2A or higher) 
   Use a USB power source with 2A output or more to see if the device powers on normally.

Question 2

My mirror dash cam screen is frozen / the lower part of the touchscreen is not responding. What should I do?

Accepted Answer

This issue is often caused by a problem with the SD card. Please try the following steps:
1. Turn off the dashcam and remove the SD card.→ Then turn the mirror dash cam back on without the SD card and check if the touchscreen responds normally.
2. If the issue improves after removing the SD card, the SD card may be the cause. Please try the following:
    • Format the SD card using your computer (FAT32 format).
    • Or replace it with a new Class 10 or higher SD card.

Question 3

The front camera doesn’t display any image. What should I do?

Accepted Answer

For AS-J3 model: 
Please check the wiring diagram in the user manual and ensure that the front camera is correctly connected to the dedicated front camera port on the main unit.
⚠️ Important: Do not connect the front camera to the split GPS port on the power cable. Incorrect connection may cause the camera to malfunction.
For other models: 
Please try removing the rear camera first, then check if the front camera image appears.
In rare cases, the front camera may not display properly due to interference from the rear camera.

Question 4

The rear camera is not displaying any image. What should I check?

Accepted Answer

Please try the following steps:
1. Check the rear camera connection. 
   Make sure the cable is securely and fully inserted into the rear camera and is not loose.
2. If using a separate-type model: 
   The front and rear cameras may interfere with each other. Try removing the front camera and check if the rear camera displays correctly.
3. Try a different power source. 
   Use a mobile battery or a USB power source with an output of 2A or higher, and check if the rear camera works properly.

Question 5

The colors on the recording screen look unnatural. What should I check?

Accepted Answer

Please check if the protective films on the front and rear camera lenses have been removed.
⚠ In some cases, transparent protective films are applied to the lenses at the time of shipping. If not removed, the image may appear washed out or colors may look distorted.

Question 6

The rear camera appears too dark. What should I check?

Accepted Answer

Please go through the following checklist:
1. Remove protective film from the lens 
   Ensure that the transparent film on the front or rear camera lens has been completely removed.
   If left on, it may block incoming light and cause the image to appear dark.
2. Check rear camera placement 
   If installed inside the vehicle, tinted windows or privacy films with low light transmittance may affect image brightness.
   Try mounting the camera outside the vehicle if possible (excluding models designed for in-car use only).
3. Check for obstructions 
   Ensure that no parts of the vehicle or objects such as luggage are partially covering the camera lens.
4. Check for backlighting conditions 
   Strong backlight can cause the video to look dark.
   Try adjusting the camera angle or improving the ambient lighting if possible.

Question 7

The video is overexposed or washed out. How can I fix this?

Accepted Answer

Please try the following steps:
1. Check the camera lens 
   Make sure the lens is clean and not scratched. Dirt or smudges on the lens can cause light to scatter and lead to overexposure. 
   Gently clean the lens with a soft cloth.
2. Adjust the rear camera angle 
   If headlights from vehicles behind shine directly into the camera, it may cause overexposure. 
   Try adjusting the camera angle slightly downward to avoid direct light from headlights.

Question 8

The mirror dash cam is not recording. What should I do?

Accepted Answer

This may be caused by an issue with the SD card. Please follow these steps:

1.Format your current SD card using a computer (FAT32 format recommended).
※Note: Formatting will erase all data, so please back up any necessary files beforehand.

2.If the issue persists after formatting, please try a new SD card, Class 10 or higher.

Slower cards or aged SD cards may not support proper video recording and could lead to errors.

Question 9

The red dot on the screen turned yellow during recording. Is this a malfunction?

Accepted Answer

No, this is not a malfunction. 
It indicates that the product has automatically switched to Emergency Recording Mode.
When the device detects vibration or shock, it starts emergency recording, and the red recording dot changes to yellow.
[Tip]
If emergency recording is triggered too frequently, please set the G-sensor sensitivity to "Low" to avoid unnecessary activation by minor vibrations.

Question 10

The product may be interfering with my car's TV signal. How can I fix this?

Accepted Answer

It is possible that the product's signal is interfering with your car’s TV antenna.
To minimize this:

Check the position of your car’s TV antenna.

Install the product and its wiring as far away as possible from the antenna.

Question 11

The reverse (rear-view) assist does not work when backing up. What should I check?

Accepted Answer

Please check the following:
Make sure the red trigger wire on the rear camera cable is properly connected to the positive (+) terminal of the vehicle’s reverse light.
This connection is necessary for the system to detect when the vehicle is in reverse gear and to activate the rear-view assist feature.

Question 12

My GPS is not receiving any signal. What should I check?

Accepted Answer

Please confirm the following:

1.GPS works best in open areas. It may not function properly in underground parking lots or enclosed spaces.
Wait a few minutes for signal acquisition.

2.Check if GPS display is enabled in the settings menu and confirm that GPS information is being shown.

3.If your car windshield has a PVB film or metal coating, this may block the GPS signal.

4.Other electronic devices in your car (such as a navigation system or radar detector) may interfere with the GPS.
Please turn them off and try again.

Question 13

How can I make sure the date and time are displayed correctly?

Accepted Answer

Please check the following depending on whether GPS is installed:
 • With GPS connected: 
   Go to the date/time settings and ensure the time zone is set correctly for your current location. For example, if you're in Japan, select UTC+9.
 • Without GPS connected: 
   Please manually set the time based on your local time zone.

Question 14

The camera mount feels loose or makes noise. How can I fix it?

Accepted Answer

Please make sure that all screws for the mounting bracket, base, and main unit are securely tightened.

Question 15

I want to download the CAR DVR PLAYER app. Where can I find it?

Accepted Answer

You can download the CAR DVR PLAYER app from the following link:
https://tinyurl.com/CARDVRAS5

Question 16

How can I find a compatible mounting arm for my vehicle?

Accepted Answer

Please send us the following via email, LINE, or the chat box on the order page:
 • Your car’s make, model, and year
 • A clear photo of the original mirror mounting base and arm
Our support team will help identify the right arm for your vehicle.

NikoMaku

Frequently asked questions

Products

Digital Piano

Car Tech

Moto Tech

Support

User Manuals

FAQ

Announcements

Company Info

About Us

Contact Us

New Arrival

Privacy Policy

Terms of Use

Cookie Policy

© 2025 NikoMaku. All rights reserved