DIY: Joyeauto Wireless CarPlay for NTG4.5/4.7




Update: password is 88888888 (8x8)
Last edited by Potrice; Dec 18, 2021 at 08:29 AM.
I have this problem in my roadtop box. When I turn on the indicator, the radio switches to a different view (as if the car thought I had a front camera). When the turn signal stops working, everything returns to its place. Let me add that carplay music works all the time. Link with my problem.

I have managed to get everything working including CarPlay and AirPlay but unfortunately no audio. I have tried all the suggestions configuring MOST, turning on Aux etc using the engineering menu but still no solution. I have ensured the optical cables have been transferred to the new harness and followed all the instructions on selecting aux on the audio input.
Can anyone help to suggest a solution as the audio is the only remaining issue to complete the installation? Thanks in advance for any help you can offer
on my W212 E550, I can’t get the Aux to provide any audio even though it now shows up. I don’t think Aux works with even a regular analog audio connection as originally intended either. I’d love any ideas!
I tested it out with the radio partially inserted in the instrument panel and it works perfect!
BUT
I tried for 4 hours to make the radio seat all the way back in its location with no luck. The new harness has the large connector (which goes between the radio and the OEM harness) and I just can’t find room nor fit my hands to move it to a suitable location.
If anyone has ideas or is close to lower Michigan I will gladly pay you to finish what I cannot!!!
Thank you!
Bill
There was an obvious spot on the left side of the glove box wall where I drilled a 1.5 or 2” hole. It was easy to snake the harness up through the hole and the box is simply sitting on the shelf. It appears from your photo that the E class does not have the same shelf, but perhaps you could either have it sit in the glove box, or mount it to the top of the box with straps. Good luck.
There was an obvious spot on the left side of the glove box wall where I drilled a 1.5 or 2” hole. It was easy to snake the harness up through the hole and the box is simply sitting on the shelf. It appears from your photo that the E class does not have the same shelf, but perhaps you could either have it sit in the glove box, or mount it to the top of the box with straps. Good luck.
Thank you for the quick reply. My issue isn’t with where to put the encoder - it’s where to put the new power harness (with big black connectors). It just won’t fit behind the radio, unless I am really not seeing something (most likely!!)
The Best of Mercedes & AMG








1) Place a soft towel on the center console for protection
2) Remove the 2 T20 screws on the top of the Comand unit
3) Carefully start to slide the Command unit out until you can see the small wire harness attached on the right side. Disconnect the harness.
4) Slide the Command unit all the way out. Once out, I found that rotating the unit 90-180 degrees made the harnesses in the back easier to remove.
5) Remove both the MAIN (large black) harness and the blue LVDS (video) cable from the rear of the Comand unit.
6) Plug the blue Joyeauto LVDS IN cable into the back of the Comand unit (There are two LVDS cables, it's the one with a 90 degree connection)
7) Remove the optical cables from the MB harness. Be VERY CAREFUL with these optical cables. Do not bend or force them at any time as they can break. I found that I had to strip away a few inches of the wrap around the MB wire harness bundle to free the optical cables.
8) Plug the large black MB harness into one end of the Joyeauto harness
9) Attach the Joyeauto power cable to the Joyeauto harness
10) Plug the other end of the black Joyeauto harness into the Comand unit
11) Plug the optical cables into the rear of the new Joyeauto harness at the rear of the Comand unit
12) Attach one end of the Joyeauto audio cable to the Joyeauto harness AUX IN
13) Attach the Joyeauto LVDS out cable to the MB blue monitor cable
14) Fish all the above cables that will attach to the main Joyeauto unit behind and to the right inside the dashboard as necessary making room to reinstall the Comand unit. Since I was going to install the unit in the glove box, I positioned them in that direction around the interior components of the dash.
15) Now we will slowly start to put the Comand back in place. Even with all the new cables moved out of position, it will be VERY DIFFICULT to get the Comand unit to fit back due to the new harness. It will take some trial and error, but CAREFULLY move the wiring harness to a least bad location while ensuring that everything remains connected. I found success with the large black harness connector forward, up, and toward the driver side. YMMV.
16) Before sliding the Comand unit all the way back in, reattach the small harness on the right side
17) Once the Comand unit is back in place, install the two T20 screws. Whew!
https://www.alibaba.com/product-deta...196986908.html (seems like roadtop box)
https://www.aliexpress.com/item/4000656837413.html actual roadtop unit
https://www.alibaba.com/product-deta...227390938.html I couldn't find about this company but they're standing behind their product and give me warranty on it.
To people who have use android. Which should I go for? Which have best integration with built in 360 camera?
P.S I am going to have it installed by a professional.
Tat to get more details. Click on -> CarPlay AI bo 11.0 Android OS(Wireless AndroidAuto, CarPlay, Screen Mirroring, install ANY apps in MBUX)
Full compatible list
- Convert wired CarPlay to wireless
- Convert wired Android Auto to wireless
- Chrome Cast - mirroring your phone to car screen
- Install more apps
- HDMI Port - Android 11.0 OS shown on car rear screen, TV, computer...
- Keep all factory operations
Plug Smart box into CarPlay USB port.
Show Android version on the car
Get more pleasure with various applications in the car.
Watching YouTube, Netflix...
System forced upgrade:
1. download the file,Find an 8G USB flash drive and format it in FAT32 format, Unzip the file and copy the upgrade files "GEMINI_PACK.BIN" and "recovery111#" to the root directory of the U disk, not in the folder
2. Insert the U disk into the USB port of the decoder
3. Within 10 seconds after the car is powered on, immediately long press the "C" button for 5-8 seconds and then let go (within 10 seconds after the car is powered on, you must long press the C button. If it exceeds 10 seconds, you cannot enter the forced upgrade by long pressing the C button)
4. The entire upgrade process needs to wait three and a half minutes
I will update it once I have it time and post results
System forced upgrade:
1. download the file,Find an 8G USB flash drive and format it in FAT32 format, Unzip the file and copy the upgrade files "GEMINI_PACK.BIN" and "recovery111#" to the root directory of the U disk, not in the folder
2. Insert the U disk into the USB port of the decoder
3. Within 10 seconds after the car is powered on, immediately long press the "C" button for 5-8 seconds and then let go (within 10 seconds after the car is powered on, you must long press the C button. If it exceeds 10 seconds, you cannot enter the forced upgrade by long pressing the C button)
4. The entire upgrade process needs to wait three and a half minutes
I will update it once I have it time and post results






