Vantrue LTE module issues

[Mehrshoki]

Hello,
I just purchased a vantrue LTE module. Tried to pair it with my n5s with a rogers sim card in Canada. The module got activated successfully but when I click on LTE its giving me error. I have internet through the module hotspot though. Getting the errors in the screenshot below. I tried using the Vantrue simcard and everything worked fine so its not even a firmware issue. APN setting is not an issue as well since I have internet through the hotspot. Anyone facing similar issue? Thanks

 

[Jeff_Vantrue]

Sorry for the inconvenience. I’ve just sent you the latest LTE module firmware and please try updating to the latest version first.

After the update, insert the Rogers SIM back into the LTE module and check if it fixs the issue.

If not, please check:

Whether all three LED indicators on the LTE module light up normally

Whether your phone can connect to the LTE module’s Wi-Fi and browse the internet normally

Let me know the results and we’ll continue to investigate if needed.

 

[PAT92]

Subject: N4S – ACC detection fails only when LTE Pro module is in the circuit

Hi ,

I'm having an issue with my N4S dash cam combined with the LTE Pro module.

Setup: ACC hardwire kit -> LTE Pro module -> N4S camera (in series), power confirmed present on the ACC line at all times.

Problem: With this setup, the camera never detects ACC on/off — it behaves as if power is constant and does not enter/exit parking mode based on ACC status.

Troubleshooting done: I disconnected the LTE Pro module and wired the ACC hardwire kit directly to the camera. In that configuration, ACC is detected correctly and parking mode entry/exit works as expected.

This isolates the issue to the LTE Pro module itself — it appears to only pass through regulated power (5V) without relaying the actual ACC on/off state to the camera.

Questions:
1. Is this a known limitation of the LTE Pro module, or a firmware/hardware bug?
2. Is there a recommended wiring configuration (e.g. powering the LTE module and camera on separate branches from the ACC kit rather than in series) that preserves ACC detection?
3. Is a firmware update planned to fix ACC signal pass-through when the LTE Pro module is installed?

Camera model: N4S
Module: LTE Pro
Current firmware version: [merci de préciser ta version ici]

Thanks for your help.

Best regards,
Patrick

 

[PAT92]

Subject: N4S – ACC detection fails only when LTE Pro module is in the circuit

Hi ,

I'm having an issue with my N4S dash cam combined with the LTE Pro module.

Setup: ACC hardwire kit -> LTE Pro module -> N4S camera (in series), power confirmed present on the ACC line at all times.

Problem: With this setup, the camera never detects ACC on/off — it behaves as if power is constant and does not enter/exit parking mode based on ACC status.

Troubleshooting done: I disconnected the LTE Pro module and wired the ACC hardwire kit directly to the camera. In that configuration, ACC is detected correctly and parking mode entry/exit works as expected.

This isolates the issue to the LTE Pro module itself — it appears to only pass through regulated power (5V) without relaying the actual ACC on/off state to the camera.

Questions:
1. Is this a known limitation of the LTE Pro module, or a firmware/hardware bug?
2. Is there a recommended wiring configuration (e.g. powering the LTE module and camera on separate branches from the ACC kit rather than in series) that preserves ACC detection?
3. Is a firmware update planned to fix ACC signal pass-through when the LTE Pro module is installed?

Camera model: N4S
Module: LTE Pro
Current firmware version: [merci de préciser ta version ici]

Thanks for your help.

Best regards,
Patrick

Firmware VT-EFD251

 

[rcg530]

Subject: N4S – ACC detection fails only when LTE Pro module is in the circuit

Hi ,

I'm having an issue with my N4S dash cam combined with the LTE Pro module.

Setup: ACC hardwire kit -> LTE Pro module -> N4S camera (in series), power confirmed present on the ACC line at all times.

Problem: With this setup, the camera never detects ACC on/off — it behaves as if power is constant and does not enter/exit parking mode based on ACC status.

Troubleshooting done: I disconnected the LTE Pro module and wired the ACC hardwire kit directly to the camera. In that configuration, ACC is detected correctly and parking mode entry/exit works as expected.

This isolates the issue to the LTE Pro module itself — it appears to only pass through regulated power (5V) without relaying the actual ACC on/off state to the camera.

Questions:
1. Is this a known limitation of the LTE Pro module, or a firmware/hardware bug?
2. Is there a recommended wiring configuration (e.g. powering the LTE module and camera on separate branches from the ACC kit rather than in series) that preserves ACC detection?
3. Is a firmware update planned to fix ACC signal pass-through when the LTE Pro module is installed?

Camera model: N4S
Module: LTE Pro
Current firmware version: [merci de préciser ta version ici]

Thanks for your help.

Best regards,
Patrick

Hi Patrick,

I don't have a N4S dash camera, but I have successfully used the Vantrue LT01 LTE connectivity module with a N4 Pro S dash camera. You mentioned your LTE module is a "LTE Pro" module, but I cannot find any reference to a "LTE Pro" module from Vantrue only their website in any Google searches. The unit I have came in a box with a large "01" on the front picture just before the "LTE Connectivity Module" text on the box. The Vantrue website and the LT01 box state that it is compatible with the N4S dash camera.

The LT01 unit that I have [used in the United States - California] worked well with the N4 Pro S dash cameras, including parking mode.

The LT01 output power/data cable must be connected to the N4S windshield mount's USB-C power connector and not directly to the N4S itself.

You mentioned a firmware version of VT-EFD251. The latest N4S firmware on the Vantrue.com website is VT-EFC271.

Please review the LTE module's power/data cable connection to the N4S and you might try updating the N4S firmware to EFC271.

Vantrue.com N4S Manual/Firmware Page

 

[jsmith]

Subject: N4S – ACC detection fails only when LTE Pro module is in the circuit

Hi ,

I'm having an issue with my N4S dash cam combined with the LTE Pro module.

Setup: ACC hardwire kit -> LTE Pro module -> N4S camera (in series), power confirmed present on the ACC line at all times.

Problem: With this setup, the camera never detects ACC on/off — it behaves as if power is constant and does not enter/exit parking mode based on ACC status.

Troubleshooting done: I disconnected the LTE Pro module and wired the ACC hardwire kit directly to the camera. In that configuration, ACC is detected correctly and parking mode entry/exit works as expected.

This isolates the issue to the LTE Pro module itself — it appears to only pass through regulated power (5V) without relaying the actual ACC on/off state to the camera.

Questions:
1. Is this a known limitation of the LTE Pro module, or a firmware/hardware bug?
2. Is there a recommended wiring configuration (e.g. powering the LTE module and camera on separate branches from the ACC kit rather than in series) that preserves ACC detection?
3. Is a firmware update planned to fix ACC signal pass-through when the LTE Pro module is installed?

Camera model: N4S
Module: LTE Pro
Current firmware version: [merci de préciser ta version ici]

Thanks for your help.

Best regards,
Patrick

You need to enable parking mode in the camera settings after hardwiring. You can select low bitrate (15 FPS) or what method you prefer.

How is your camera hardwired? Fusebox? OBDII?

Is the firmware up to date?

 

[PAT92]

Hello,
Thanks for your replies. Just to clarify, it’s the N4S PRO, and the latest firmware is indeed VT-EFD251 (the EFC271 is for the standard N4S). The camera is connected to a Vantrue kit wired to the constant battery and ACC outputs. If I connect the camera directly—bypassing the LTE module—the ACC signal is detected correctly; however, when I use the LTE module with the original cable, the ACC signal isn't detected, even though it used to work perfectly.

 

[jsmith]

Hello,
Thanks for your replies. Just to clarify, it’s the N4S PRO, and the latest firmware is indeed VT-EFD251 (the EFC271 is for the standard N4S). The camera is connected to a Vantrue kit wired to the constant battery and ACC outputs. If I connect the camera directly—bypassing the LTE module—the ACC signal is detected correctly; however, when I use the LTE module with the original cable, the ACC signal isn't detected, even though it used to work perfectly.

Be sure the Hardwire goes to the LTE Module for Power and the LTE Module goes to the Camera for Power. Be sure everything is plugged into the right ports.

You cannot use a 12V cable and the LTE module MUST be hardwired.

 

[PAT92]

Thanks jsmith Everything is well plugged into the rights ports , it used to work perfectly before ....

 

[jsmith]

Thanks jsmith Everything is well plugged into the rights ports , it used to work perfectly before ....

If you think the hardware is faulty, reach out to Vantrue Support. They will definitely assist you in swapping out any hardware that may have failed.

 

[rcg530]

Hello,
Thanks for your replies. Just to clarify, it’s the N4S PRO, and the latest firmware is indeed VT-EFD251 (the EFC271 is for the standard N4S). The camera is connected to a Vantrue kit wired to the constant battery and ACC outputs. If I connect the camera directly—bypassing the LTE module—the ACC signal is detected correctly; however, when I use the LTE module with the original cable, the ACC signal isn't detected, even though it used to work perfectly.

Sorry for the firmware version confusion, but I was basing my statements on post #3 where you stated the dash camera is a N4S. In post #7, you stated the dash camera is a N4S Pro, but that model doesn't exist. It appears you have a N4 Pro S, which is the same model that I have and it has worked well with the Vantrue LT01 LTE module. I have firmware version VT-EFD251 installed in my N4 Pro S as well. It may very well be that the LT01 hardware is faulty. I would suggest contacting Vantrue support to see if they can swap that unit out for you.