More and more Canbus issues

robdx2

Me again, I am still having Canbus box issues. My unit (Dudu7 8/128gb) came with a Hiworld box for 2006 Mercedes w203 but it did not initially work well, so I swapped it over for an older LZ(HZ) box which worked better but read no car info at all and was unknown canbus version.
I contacted Hiworld direct who sent me an update and at the same time I was advised from another forum (a mercedes one) to buy an OD Ouzi box which I bought the most up to dater version as the LZ(HZ) box was from 2022.
Today I swapped over to the OD box but unfortunately it was no more functional than the older LZ box so while I had the unit out I decided to try the Hiworld with the update. The Hiworld rep told me to initially try Benz>B200, if no good then Benz>old if still not perfect try Volkswagon>PQ which I did and had much better results, steering controls and door opening works and finally have vehicle info. But there is an issue, the settings button on vehicle info does not work and the reversing guide does not fully work(it did with the LZ(HZ) box. I have taken a video of the issues so could someone please take a look and advise if there is a fix
Thank you
Video link: https://drive.google.com/file/d/12l24BrtHkDdB9WfeEiDjwgP1rYeQV3lx/view?usp=sharing

dudu-lai

robdx2 Bro, are you mistaken? I need to explain this to you.
CANBUS Junction Box Functions, please read carefully!
1: The basic CANBUS information is SWC, Doors, Lights, Reverse. The rest of the information depends on the OEM main unit
2: A few models need to keep the OEM main unit, then the junction box is only used to decode the basic information. The rest of the information will be viewed in the OEM system.
The CANBUS junction box is not foolproof and will not display the information you need.
The purpose of the CANBUS junction box is to allow the Android radio to display as much information from the OEM radio as possible.
When you remove the OEM mainframe and use the Android radio, the CANBUS junction box needs to send (e.g., Vehicle Controls, Door/Vehicle Info, Sensors, Tracks, AMP, SWC, etc.) information to the Android radio in order to avoid losing vehicle information and functionality, but most automotive OEM mainframes are inconsistent with some having a lot of information, and some having a little information.
For example, a Volkswagen can display tons of information while a Hyundai/Nissan displays little or no information at all. This is not a flaw in Android radios, CANBUS boxes or cars.

dudu-lai

The vehicle information setting you mentioned is for Volkswagen, your car is a Mercedes, does the Hiworld salesperson think this setting is applicable to your car? Please contact him.
In addition, regarding the reversing assist system, do you mean the dynamic assist line or the radar sensor?

robdx2

dudu-lai Its the dynamic line it stays static on straight, or static curved to the left, it doesn't move with the car.

hiworld-canbus.mp4

2MB

It works perfectly with the LZ(HZ) box. can this be fixed using the Hiworld box?

According to Hiworld a 2006 Mercedes C180 Kompressor W203 should be set to Benz - B200, however even with the updated software for it the Hiworld box does not work on that setting(no SWC or door opening) it works on Benz - old but not well and interferes with central locking, but do get car info. So I contacted hiworld who sent the update and suggested using the Volkswagen - PQ setting and with that setting I get SWC and door open plus car info and no key interference.
As I stated before I have also used this box

With that set on LZ-benz-B200 I get SWC door open, but no info and unknown canbus version.

A mercedes forum advised me to buy and try this box

I have tried it set to OD-benz-B200 as instructed and I get the same as LZ box, works SWC and door open but again no info and unknown canbus version.

The best ans smoothest operation I get all round is with the Hiworld set to Volkswagon-PQ

Are the LZ and OD boxes actually compatible with dudu7? just seems strange that neither will read vehicle info yet the Hiworld will even when set on benz - old when the SWC and door open doesn't work

dudu-lai

robdx2 The reason why the CANBUS box is not compatible with the car is that Hiworld cannot obtain the steering wheel angle information, so there is no dynamic track. DUDU is compatible with these CANBUS boxes.