DIY: Kremersino Wireless CarPlay for NTG4.0
Junior Member
Joined: Feb 2009
Posts: 31
Likes: 4
2010 Mercedes C300 4Matic Sport - 140K miles all me :)
I'm have the same issue. Command does light up nor does CarPlay. I received my new style unit today as well. Oddly, it all DID work when I tested the connections at first. Then when I went to 'push' everything in and clean up the install, it no longer worked. Swapping back to original LVDS cable fixed Command but of course CarPlay doesn't work. I figured it was a lose connection, but I've tried for 2 hours and still can't get it working. I suspect a bad LVDS cable/connection maybe?
Newbie
Joined: Nov 2021
Posts: 10
Likes: 1
Mercedes E350
I'm have the same issue. Command does light up nor does CarPlay. I received my new style unit today as well. Oddly, it all DID work when I tested the connections at first. Then when I went to 'push' everything in and clean up the install, it no longer worked. Swapping back to original LVDS cable fixed Command but of course CarPlay doesn't work. I figured it was a lose connection, but I've tried for 2 hours and still can't get it working. I suspect a bad LVDS cable/connection maybe?
Junior Member
Joined: Feb 2009
Posts: 31
Likes: 4
2010 Mercedes C300 4Matic Sport - 140K miles all me :)
I'm in contact as well. I believe it to be a bad LVDS cable. It at least seems they'll make it right even though it'll take a bit due to time zone differences, shipping, etc.
Newbie
Joined: Nov 2021
Posts: 10
Likes: 1
Mercedes E350
This new version has a lot of problems in my opinion. Today they asked me to connect to ACC red wire from the Harness to the red cable from the USB cable. After I connected the cables, nothing changed and when I turned off the car, smoke started coming from the module. I quickly disconnected everything and reconnected the original command system and thankfully it is working fine. Now kremersino said they will send me a new box, but I don't know if I have the confidence to connect it back to my car after what happened. Hopefully, other people are not having the same problem.
Junior Member
Joined: Feb 2009
Posts: 31
Likes: 4
2010 Mercedes C300 4Matic Sport - 140K miles all me :)
Agree - I'm feeling burned a bit. I just gave it another go with same results. Either the box or the wiring harnesses are bad. Did you get red lights on the front of gold box? I had a solid red on bottom and slow flash red on top. No idea what that means. Like you, I ended up pulling out the whole thing and back to my normal Command which also still works. We'll see if they're able to fix/address and send me new unit as well.
Member
Joined: Aug 2020
Posts: 75
Likes: 19
'10 C63 AMG
I'm have the same issue. Command does light up nor does CarPlay. I received my new style unit today as well. Oddly, it all DID work when I tested the connections at first. Then when I went to 'push' everything in and clean up the install, it no longer worked. Swapping back to original LVDS cable fixed Command but of course CarPlay doesn't work. I figured it was a lose connection, but I've tried for 2 hours and still can't get it working. I suspect a bad LVDS cable/connection maybe?
For the new box, I had it professionally installed and did not experience any problems. I think these boxes/cables are a bit frail, so these kinds of things can't happen.
I'm not exactly sure what was the dip switch configuration I used. After getting a black screen on the default configuration, I messd around with the switches until I was able to get the carplay image to show.
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Junior Member
Joined: Feb 2009
Posts: 31
Likes: 4
2010 Mercedes C300 4Matic Sport - 140K miles all me :)
Interesting. Here's hoping he sends me a new box. I was VERY careful pushing mine back in, but would agree, the cabling/wiring harnesses see really fragile.
My dip switches for NTG4.0 7" screen on my 2010 C300 4Matic Sport were 1 high, 2 low, 3,4,5 high, 6 low
My dip switches for NTG4.0 7" screen on my 2010 C300 4Matic Sport were 1 high, 2 low, 3,4,5 high, 6 low
Newbie
Joined: Nov 2021
Posts: 10
Likes: 1
Mercedes E350
To be honest, that was my experience when I tried to install the box myself the first time around, too. It worked initially but when I tried to put everything back together behind the head-unit I believe I ended up busting something or some harness and could not get it working. Michael was kind enough to ship me a new box even though, arguably, it was my fault on the installation.
For the new box, I had it professionally installed and did not experience any problems. I think these boxes/cables are a bit frail, so these kinds of things can't happen.
I'm not exactly sure what was the dip switch configuration I used. After getting a black screen on the default configuration, I messd around with the switches until I was able to get the carplay image to show.
For the new box, I had it professionally installed and did not experience any problems. I think these boxes/cables are a bit frail, so these kinds of things can't happen.
I'm not exactly sure what was the dip switch configuration I used. After getting a black screen on the default configuration, I messd around with the switches until I was able to get the carplay image to show.
was the new box they sent you the same version with no LVDS box or the older more reliable version?
Junior Member
Joined: Feb 2009
Posts: 31
Likes: 4
2010 Mercedes C300 4Matic Sport - 140K miles all me :)
Firmware update...how to do it without Command screen?
So I received an email from Michael saying it's simply a firmware issue and to upload the attached file via the USB cable and provide 12 volt power to the red AC Cable and it should update automatically. Tried that and nothing happened when applying the 12 volt power. No lights, no smoke, no nothing. So, I decided to try and connect to the car again and it almost looked like something was happening. Red lights flashed, my USB stick flash, but still nothing. My screen won't open and Command won't boot. I think I must need a new unit or I'm doing something wrong. Linked here are a couple videos I took to demonstrate that the box and the update are not working for me.
Edit: Here's a link to the update instructions that were sent to me. Problem is, these directions include a screen working: https://1drv.ms/b/s!Atwwakv8E39y1JkG...6AdZA?e=eLhU96
- Video of CarPlay box connected, updating, not working - https://1drv.ms/v/s!Atwwakv8E39y1JkE...vIrEQ?e=4gqq9k
- Video of box removed and Command unit working correctly prior to CarPlay box installed: https://1drv.ms/v/s!Atwwakv8E39y1JkD...Hy16w?e=BakTAE
Edit: Here's a link to the update instructions that were sent to me. Problem is, these directions include a screen working: https://1drv.ms/b/s!Atwwakv8E39y1JkG...6AdZA?e=eLhU96
Last edited by killerfish; Nov 11, 2021 at 03:34 PM. Reason: Included directions for updating that was sent my way
Member
Joined: Jan 2015
Posts: 150
Likes: 22
From: Connecticut
2010 E550
I've reached out to him over the course of the year and can never get him to send me an update for my box, so it's interesting that he sent you that file. I wonder if it'll work in mine, though looking at the file size, it doesn't seem like a full update.
Last edited by markgm; Nov 12, 2021 at 07:53 AM.
Junior Member
Joined: Feb 2009
Posts: 31
Likes: 4
2010 Mercedes C300 4Matic Sport - 140K miles all me :)
Correct, it's just one file and I confirmed with him that that's all it should be for this problem. He wrote me again last night saying that I need to have the box all wired into the car and connect the Red ACC cable to a 12 volt source (ie, my car lighter). This should force the Command screen to open and allow me to update. His original instructions were to connect 12v to the Red ACC cable and the update should happen automatically without box connected to car. Or at least that's how I understood his instructions.
Anyway, I'm going to give this new approach a try in about 2 hours. We'll see. Hopefully there's no smoke. I'll video it as well so if (when) it doesn't work I can send to him in hopes of getting a new/update already installed box + wiring harnesses sent. But, maybe it'll work. We'll see!
Anyway, I'm going to give this new approach a try in about 2 hours. We'll see. Hopefully there's no smoke. I'll video it as well so if (when) it doesn't work I can send to him in hopes of getting a new/update already installed box + wiring harnesses sent. But, maybe it'll work. We'll see!
Newbie
Joined: Nov 2021
Posts: 10
Likes: 1
Mercedes E350
Yeah I'm not sure what the problem is. I'm definitely not trying anything with my current box after the smoke incident. I could smell that something burned inside the box for over 2 hours after. At first, I suspected a problem with the LVDS cable, but after some of these troubleshooting techniques, I'm not sure anymore. I wonder if there is a way to bypass the lvds cable and use the reverse camera inputs as a way to transfer the image back to the screen but that might still cause problems in terms of the original command showing. Quite unfortunate at this point. but I personally doubt that it's a software issue tbh.
Make sure to keep your video running after you turn your car off for a couple of seconds since that's when my box started smoking. good luck
Make sure to keep your video running after you turn your car off for a couple of seconds since that's when my box started smoking. good luck
Junior Member
Joined: Feb 2009
Posts: 31
Likes: 4
2010 Mercedes C300 4Matic Sport - 140K miles all me :)
Welp - I've asked for a refund or a new box. Connected the Red ACC cable with box connected to the car. Started car, nothing. No screen, same as before. I clearly have a bad box/cabling. Here's an amazing video demonstrating nothing happening 
https://1drv.ms/v/s!Atwwakv8E39y1JkI...3FkNg?e=uvbC6W
https://1drv.ms/v/s!Atwwakv8E39y1JkI...3FkNg?e=uvbC6W
Newbie
Joined: Nov 2021
Posts: 10
Likes: 1
Mercedes E350
Welp - I've asked for a refund or a new box. Connected the Red ACC cable with box connected to the car. Started car, nothing. No screen, same as before. I clearly have a bad box/cabling. Here's an amazing video demonstrating nothing happening https://1drv.ms/v/s!Atwwakv8E39y1JkI...3FkNg?e=uvbC6W
https://1drv.ms/v/s!Atwwakv8E39y1JkI...3FkNg?e=uvbC6W
the fact that the original screen was not showing up indicated that it wasn't just a software issue. He said that they sent me a new box, but no tracking number yet. Hopefully, it was just a bad batch or something. I'll update when I receive the new one.In theory, it should work, as you can see multiple people had great success in installing it and working properly. Unfortunately, the seller has recently released a new version with some changes, myself and Killerfish have had some significant problems, on the other hand Heaven7 also received the same version and it's working perfectly. It is up to you if you are willing to take a little risk and deal with some possible problem, but the seller has been relatively responsive in trying to fix the issues. Currently waiting on a second module to install and see if it works.
Newbie
Joined: Nov 2021
Posts: 1
Likes: 0
W221 2010
Low Volume / Noise
Hi Gents
Just installed this box by a shop in Sharjah (UAE) and It works as a charm (Carplay - Limcet). My car is a Japanese imported S class (W221 2010), and there was no AUX at all, and no ability to access the engineering mode. The technician has installed this box on the (VIDEO/DVD) menu and asked me to press on the video button for 2 seconds so the HU change to the new box.
My questions are:
- Carplay music volume is way lower than original HU (Radio, etc.. ) Any fix? the box has a DSP chip which should amplify the music, and I have checked the box settings and the maximum volume is already set (32)
- When carplay is on, and no music is running, I head some loopback noise, any idea if I can install a loopback filter or noise cancellation module?
Thanks and Cheers!
Just installed this box by a shop in Sharjah (UAE) and It works as a charm (Carplay - Limcet). My car is a Japanese imported S class (W221 2010), and there was no AUX at all, and no ability to access the engineering mode. The technician has installed this box on the (VIDEO/DVD) menu and asked me to press on the video button for 2 seconds so the HU change to the new box.
My questions are:
- Carplay music volume is way lower than original HU (Radio, etc.. ) Any fix? the box has a DSP chip which should amplify the music, and I have checked the box settings and the maximum volume is already set (32)
- When carplay is on, and no music is running, I head some loopback noise, any idea if I can install a loopback filter or noise cancellation module?
Thanks and Cheers!
Junior Member
Joined: Sep 2016
Posts: 16
Likes: 3
W124 E280T , W211 E240
Battery drain
Hi everyone, I need your support on two things am facing with the unit (Silver box without small box)
1- The box's max volume is about 60% of what the max on the NTG is, I did the sound check trick and it helped alot, but I still feel there is more.
2- This is my main concern. As you know, there is always a small current going to the NTG system even if the screen is off. This is also what happens from the moment the unlock button is pressed on the key and also for a minute approx after exiting and locking the car.
The box, since it is connected to the NTG, directly powers on and starts withdrawing current from the battery.
-Can this impact the battery, fuses or other elecrtical component by any chance? It just happens that I noticed the car sometimes takes longer to start since I installed the box and today the battery died completely. (It is 1 year and 7 months old though)
-Would there be something to do to stop it from starting on its own?
Thanks
1- The box's max volume is about 60% of what the max on the NTG is, I did the sound check trick and it helped alot, but I still feel there is more.
2- This is my main concern. As you know, there is always a small current going to the NTG system even if the screen is off. This is also what happens from the moment the unlock button is pressed on the key and also for a minute approx after exiting and locking the car.
The box, since it is connected to the NTG, directly powers on and starts withdrawing current from the battery.
-Can this impact the battery, fuses or other elecrtical component by any chance? It just happens that I noticed the car sometimes takes longer to start since I installed the box and today the battery died completely. (It is 1 year and 7 months old though)
-Would there be something to do to stop it from starting on its own?
Thanks
Thread Starter
Senior Member
Joined: Jan 2017
Posts: 361
Likes: 116
From: Orange County, CA
W222 S550e, C207 E550, W212 E350
Hi everyone, I need your support on two things am facing with the unit (Silver box without small box)
1- The box's max volume is about 60% of what the max on the NTG is, I did the sound check trick and it helped alot, but I still feel there is more.
2- This is my main concern. As you know, there is always a small current going to the NTG system even if the screen is off. This is also what happens from the moment the unlock button is pressed on the key and also for a minute approx after exiting and locking the car.
The box, since it is connected to the NTG, directly powers on and starts withdrawing current from the battery.
-Can this impact the battery, fuses or other elecrtical component by any chance? It just happens that I noticed the car sometimes takes longer to start since I installed the box and today the battery died completely. (It is 1 year and 7 months old though)
-Would there be something to do to stop it from starting on its own?
Thanks
1- The box's max volume is about 60% of what the max on the NTG is, I did the sound check trick and it helped alot, but I still feel there is more.
2- This is my main concern. As you know, there is always a small current going to the NTG system even if the screen is off. This is also what happens from the moment the unlock button is pressed on the key and also for a minute approx after exiting and locking the car.
The box, since it is connected to the NTG, directly powers on and starts withdrawing current from the battery.
-Can this impact the battery, fuses or other elecrtical component by any chance? It just happens that I noticed the car sometimes takes longer to start since I installed the box and today the battery died completely. (It is 1 year and 7 months old though)
-Would there be something to do to stop it from starting on its own?
Thanks
Hello, can you explain the 'sound check trick' you are talking about? I am not sure what you are referring to in #1.
#2 - The system does boot on when you hit lock/unlock. This is so the box is already warmed up and ready to go by the time you start your car, making it a seamless experience to jump in your car and have the carplay screen already functioning. This system also stays on for a little bit after shutting the car off and leaving, I am not sure of the reason for this. I have had my box installed for well over a year with no battery or fuse issues. I wouldn't think about it too much, I think they were already engineered with this in mind. The best advice I can give you is, keep your keys away from the car when not driving, and avoid hitting lock or unlock multiple times before actually getting in a going for a drive. Hope this helps!
Junior Member
Joined: Sep 2016
Posts: 16
Likes: 3
W124 E280T , W211 E240
Hello, can you explain the 'sound check trick' you are talking about? I am not sure what you are referring to in #1.
#2 - The system does boot on when you hit lock/unlock. This is so the box is already warmed up and ready to go by the time you start your car, making it a seamless experience to jump in your car and have the carplay screen already functioning. This system also stays on for a little bit after shutting the car off and leaving, I am not sure of the reason for this. I have had my box installed for well over a year with no battery or fuse issues. I wouldn't think about it too much, I think they were already engineered with this in mind. The best advice I can give you is, keep your keys away from the car when not driving, and avoid hitting lock or unlock multiple times before actually getting in a going for a drive. Hope this helps!
#2 - The system does boot on when you hit lock/unlock. This is so the box is already warmed up and ready to go by the time you start your car, making it a seamless experience to jump in your car and have the carplay screen already functioning. This system also stays on for a little bit after shutting the car off and leaving, I am not sure of the reason for this. I have had my box installed for well over a year with no battery or fuse issues. I wouldn't think about it too much, I think they were already engineered with this in mind. The best advice I can give you is, keep your keys away from the car when not driving, and avoid hitting lock or unlock multiple times before actually getting in a going for a drive. Hope this helps!
Regarding the battery, I do avoid unlocking the car unnecessarily or keeping it unlocked without starting the engine. Good to know you had a year without trouble. My guess now is that its the battery giving up anyway.
Thread Starter
Senior Member
Joined: Jan 2017
Posts: 361
Likes: 116
From: Orange County, CA
W222 S550e, C207 E550, W212 E350
Sorry I forgot to clarify what I meant with sound check while writing. Basically Apple has an option that controls the volume output for hearing protection and all that. You can disable it in Settings -> "Sound Check" & "Volume Limit".
Regarding the battery, I do avoid unlocking the car unnecessarily or keeping it unlocked without starting the engine. Good to know you had a year without trouble. My guess now is that its the battery giving up anyway.
Regarding the battery, I do avoid unlocking the car unnecessarily or keeping it unlocked without starting the engine. Good to know you had a year without trouble. My guess now is that its the battery giving up anyway.
