Develop Bugs

[Q] Help with new Headunit not powering off and some other minor problems

Hi all, new guy here with some problems.
I've bought a new headunit to replace my factory Skoda Stream Radio CD.
My car is an Skoda Octavia mk2 vRS year 2007, so any VW headunit should be OK in my car.
New headunit is a Joying Android 4.4.4 RK3188 with latest official firmware (June 2015).
I was trying to install it this morning for the first time and found several problems.
The most important one is the headunit doesn't power off even with my car completely shutdown and closed.
Headunit install instructions state there are two different methods to connect the headunit.
First and preferred one is using CANBUS decoder box, so headunit power is controlled through CANBUS decoder.
But if headunit doesn't power on when you turn on the car (that's happening to mine), you have to use second method: unplug CANBUS decoder box and connect ACC +12V red wires so that headunit gets powered.
With this second method the headunit starts up OK, but when i turn off the engine, take out the key or even close the car with remote control, headunit doesn't power off at all. I even tried to wait for 20 minutes but with no results. So i had to remove new headunit from the car to avoid battery drain...
I have upgraded firmware from Abril to June version so i got a new feature that allows to delay shutdown after ACC is off.
I set it to 30 seconds delay but still nothing. Headunit stays on.
I already asked to seller, and i'm waiting for an answer. But i thought maybe i could get some valuable ideas here at the forum.
Still don't understand why headunit is not powering on with CANBUS decoder connected. My car should support it, my factory Skoda Stream Radio CD is able to show climatronic info on display.
Other problems i found:
- Headunit buttons don't light even if i turn on car headlights. If i set button's colour in Settings\Elements buttons light for a pair of seconds to show new color, but then they go off again.
- I wanted to set Skoda logo at boot at Factory Settings but asks for a pin/password. Thought it was 126 but it isn't. What is the pin for Factory Settings?
- There's a slight buzzing coming from speakers when i turn on car headlights. That buzzing is not there with Skoda factory radio unit.
Long post, thanks in advance for your answers. :good:

Seems to me wrong or defected harness?
Does your car have factory amplifier? I had one that was making lot of issues. I figured out that the harness was the problem because they sent me a harness that is compatible with my factory head unit. But my car was standard trim that didnt include it. I had to cut one wire they told me to cut it. And it worked fine after that.
أرسلت من LG-D802 بإستخدام تاباتلك

Thanks for your answer Scorbion,
Seller is going to send me a new Canbus box decoder. We think it must be faulty, that's why headunit doesn't power on or power off with it. Without Canbus box, ACC coming from VW harness is not a real ACC but a +12V to battery, because VW factory radio does all through canbus, and so headunit is always connected and doesn't power off.
Will update info when i get the new canbus box from seller.
Thanks
Scorbion said:
Seems to me wrong or defected harness?
Does your car have factory amplifier? I had one that was making lot of issues. I figured out that the harness was the problem because they sent me a harness that is compatible with my factory head unit. But my car was standard trim that didnt include it. I had to cut one wire they told me to cut it. And it worked fine after that.
أرسلت من LG-D802 بإستخدام تاباتلك
Click to expand...
Click to collapse

GAF70 said:
Hi all, new guy here with some problems.
I've bought a new headunit to replace my factory Skoda Stream Radio CD.
My car is an Skoda Octavia mk2 vRS year 2007, so any VW headunit should be OK in my car.
New headunit is a Joying Android 4.4.4 RK3188 with latest official firmware (June 2015).
I was trying to install it this morning for the first time and found several problems.
The most important one is the headunit doesn't power off even with my car completely shutdown and closed.
Headunit install instructions state there are two different methods to connect the headunit.
First and preferred one is using CANBUS decoder box, so headunit power is controlled through CANBUS decoder.
But if headunit doesn't power on when you turn on the car (that's happening to mine), you have to use second method: unplug CANBUS decoder box and connect ACC +12V red wires so that headunit gets powered.
With this second method the headunit starts up OK, but when i turn off the engine, take out the key or even close the car with remote control, headunit doesn't power off at all. I even tried to wait for 20 minutes but with no results. So i had to remove new headunit from the car to avoid battery drain...
I have upgraded firmware from Abril to June version so i got a new feature that allows to delay shutdown after ACC is off.
I set it to 30 seconds delay but still nothing. Headunit stays on.
I already asked to seller, and i'm waiting for an answer. But i thought maybe i could get some valuable ideas here at the forum.
Still don't understand why headunit is not powering on with CANBUS decoder connected. My car should support it, my factory Skoda Stream Radio CD is able to show climatronic info on display.
Other problems i found:
- Headunit buttons don't light even if i turn on car headlights. If i set button's colour in Settings\Elements buttons light for a pair of seconds to show new color, but then they go off again.
- I wanted to set Skoda logo at boot at Factory Settings but asks for a pin/password. Thought it was 126 but it isn't. What is the pin for Factory Settings?
- There's a slight buzzing coming from speakers when i turn on car headlights. That buzzing is not there with Skoda factory radio unit.
Long post, thanks in advance for your answers. :good:
Click to expand...
Click to collapse
i have the same problem. can u fix it?

Did you solve this canbus problem?

Yes, new can bus decoder did the trick.
Long time ago though...

Hardware solution trumps everything
Had the same issue. Im also waiting for the supplier to respond. In the meantime, I just pulled the acc pin off the box and connected the radio to cig. lighter possitive. Works.

Bluetooth connection issue

I cannot fully connect Bluetooth so the phone part works with my 2016 Mazda cx9. I can only get the audio. All boxes are checked on the Bluetooth side but the screen on the car says cannot connect with phone. Any other settings I could try or maybe missing?
Sent from my ONEPLUS A3000 using Tapatalk

Getting same thing on my Lexus Gs and my fiat 500

I'm also having a Bluetooth issue with my car, though it's a bit different. It pairs no problem and it will play music through the car speakers but then it randomly starts playing through the phone speakers. I go into Bluetooth on the phone and it says it's still connected to the car but it plays through the phone. It's happened 3 times now. Two times turning Bluetooth off and on again fixed it, the other time I couldn't get it to play through he car speakers again.
The sound has also been very choppy through one of my Bluetooth speakers. I'm hoping this is software related, not something wrong with the hardware.

I have an issue w/ BT in my car as well, but in my case the phone connects but doesn't STAY connected. It pairs just fine to the car (Cadillac SRX), but drops within seconds. When I first paired it, the connection dropped before I could even add the smart lock device. I repeated multiple times, and even turning BT off/on it literally disconnects within 5 seconds. So I can't even make calls in the car. But it connects and stays connected just fine to my Soundfreak BT speaker in the house..

No BT issues to report here. Phone and audio work perfectly in my 2016 Infiniti Q60.

Same here. 2013 Genesis Coupe BT wokring great no issues....

mine says in correct pin, lol but both Pins are the same on the car and phone, idk

Anyone have updates on this or has onePlus acknowledged it? It looks like they have tons of a2dp problems on their forums with the oneplus X and have yet to resolve them, just leaving the people with a phone that doesn't work with tons of different systems, which work with about 99% of other phones.
To update my situation, in my 2014 Lexus it will not display any song information or play music properly.
In my 2016 fiat, it makes the car completely useless as it sends the fiats head unit into a boot loop upon connecting.

Prozart said:
I'm also having a Bluetooth issue with my car, though it's a bit different. It pairs no problem and it will play music through the car speakers but then it randomly starts playing through the phone speakers. I go into Bluetooth on the phone and it says it's still connected to the car but it plays through the phone. It's happened 3 times now. Two times turning Bluetooth off and on again fixed it, the other time I couldn't get it to play through he car speakers again.
The sound has also been very choppy through one of my Bluetooth speakers. I'm hoping this is software related, not something wrong with the hardware.
Click to expand...
Click to collapse
I'm having this exact same issue.

i would try updating the device

dbaman said:
i would try updating the device
Click to expand...
Click to collapse
there is nothing to update. the cars have the latest software and so does the phone

acheney1990 said:
I'm having this exact same issue.
Click to expand...
Click to collapse
I'm now having an exciting new problem. If I'm listening to music over Bluetooth and I stop somewhere, to get coffee this morning for example, when I get back in the car it'll start playing back on the car speakers but extremely quietly. I have to turn the car volume up to max to barely hear it. I have to toggle Bluetooth like 5 times or more to get it working again.

bigmase521 said:
I have an issue w/ BT in my car as well, but in my case the phone connects but doesn't STAY connected. It pairs just fine to the car (Cadillac SRX), but drops within seconds. When I first paired it, the connection dropped before I could even add the smart lock device. I repeated multiple times, and even turning BT off/on it literally disconnects within 5 seconds. So I can't even make calls in the car. But it connects and stays connected just fine to my Soundfreak BT speaker in the house..
Click to expand...
Click to collapse
Have exact same issue with my Escalade

Seems to be a default bug with Oneplus phones and yet my cheap Cubot at a 1/6 of the price of the OP3 connects fine to my car.

2015 Fiat Ducato works well.
Wysłane z mojego ONEPLUS A3003 przy użyciu Tapatalka

Bluetooth connectivity does not drop on my VW Golf VI, however no song information is displayed, it just shows 'Bluetooth Audio'.

luckydwg said:
I cannot fully connect Bluetooth so the phone part works with my 2016 Mazda cx9. I can only get the audio. All boxes are checked on the Bluetooth side but the screen on the car says cannot connect with phone. Any other settings I could try or maybe missing?
Sent from my ONEPLUS A3000 using Tapatalk
Click to expand...
Click to collapse
Same sort of problem here with Renault MediaNav. Different is It connects onley to disconnect a few seconds later.
Really driving me mad.
Sent from my ONEPLUS A3003 using XDA-Developers mobile app

Got problems with my Kenwood car stereo as well. Sometimes, if I'm trying to connect, it just says that the PIN is incorrect (even though I don't enter one). And if I'm lucky enough and it opens the prompt to enter the PIN, it won't do anything after I enter it.
Had a similar problem on my HTC m7 or Nexus 4 (can't remember) with a faulty custom ROM. Changed to another one and it worked again.
But I don't wanna leave stock on my Opo3 yet :S

I have the Renault Kadjar and using the stock rom i can only use the music side of the bluetooth. I spoke with Oneplus and they tried to help but they did not know what is wrong. I ended up rooting the phone and using a Custom Rom, at the moment i am using resurrection rom and i have no problems with the bluetooth.

Just tried it with my other car which has a pioneer radio. No problems with that one.
Still a no go on with the MediaNav
Sent from my ONEPLUS A3003 using XDA-Developers mobile app

Dasaita HA5404-Max6 Sound Problem

Hello Guys
I'm really happy with the Head unit when I haven't this Problem and I hope we find a solution.
Here is the Problem:
When i listen to music in every app or from Phone I hear the sound for 5 seconds. Then the radio play again but I hear nothing. Then I touch the volume+ or volume- I hear the sound for 5 seconds and then the same thesound gos out.
I don't know more....
Thanks for xyour help

Does it happen with all apps on the headunit including the analog radio?
Do you have a custom rom installed? Or stock rom?
Enviado desde mi SM-G950F mediante Tapatalk

Yes it's on all apps including the analog radio. It's the stock rom on the head unit. I write Dasaita on aliexpress and on facebook but no answer come back.

That's a weird problem does the volume level go to 0% when the sound goes away? Or does it stay to what you have it set at? Is it only the volume + that restores sound? I wonder if the volume - key is stuck on?

The volume stay on the level that i set. No i can restore it with + or - button. I have two videos on youtube but i can't post this.

Psychochindli21 said:
The volume stay on the level that i set. No i can restore it with + or - button. I have two videos on youtube but i can't post this.
Click to expand...
Click to collapse
From looking at your videos. I think the unit may be defective imo

Ask dasaita for a solution or replacement
Enviado desde mi SM-G950F mediante Tapatalk

if you have a soundsystem like JBL or BOSE in your car ,you must change one option in the factory setting menu (with 126)
Go to canbus menu and change amplifier = "with amplifier"
in Peugeot 208 with JBL sound system ,if you dont do that ,we have the same probleme like you

Delor3an88 said:
if you have a soundsystem like JBL or BOSE in your car ,you must change one option in the factory setting menu (with 126)
Go to canbus menu and change amplifier = "with amplifier"
in Peugeot 208 with JBL sound system ,if you dont do that ,we have the same probleme like you
Click to expand...
Click to collapse
That's the solution i have yet no time to make a great test but i have make the change and I hear the first 30 seconds of a song. I must test this tomorrow. But i think this is the solution. I'm very happy about your tip... Many thanks to you

Psychochindli21 said:
That's the solution i have yet no time to make a great test but i have make the change and I hear the first 30 seconds of a song. I must test this tomorrow. But i think this is the solution. I'm very happy about your tip... Many thanks to you
Click to expand...
Click to collapse

Bluetooth and Car Audio

Anyone else having issues with connecting the 7T to their car and getting audio going out of it? My OG Pixel didn't have a problem, but I have to toggle off/toggle on Bluetooth and then manually tap the car's bluetooth listing to get it to actually 'connect' the audio portion.
Rather annoying, considering I'm only in the car for a few minutes at a time, this either eats into the time entirely, or makes me sit in my car for a couple minutes before even driving to fiddle with the bluetooth settings.
Car has stock headunit, 2015 Evo X. Like I said, original Pixel XL had no issues, but this is annoying. I've tried changing bluetooth versions to no avail. I can see it connecting and dropping the bluetooth connection fairly frequently while staring at it and trying to 'get it going'. But once it connects, it stays there.
My bluetooth headphones (Some knock off cheap Chinese ones for $20) don't seem to have an issue.

My connection to my aftermarket stereo is fine. Just seems a little quieter than my last phone. Connecting is kind of slow too when I start my car but it is automatic.

I don't have any issues with connecting to all 3 cars (2014 Honda Accord, 2009 Pontiac G8 Gt and a 2018 Honda Fit) but I do agree that the volume seems a little lower than my previous phone (Galaxy S8).
Sent from my [device_name] using XDA-Developers Legacy app

Hmm. Weird. Is there anyway I can check for logs to find out what exactly is happening? I haven't rooted, just don't know if it's something I can naturally pull from Android as a whole.

I had the same issue, but when I made the phone discoverable and initiated bt from the car stereo it seemed to work.
I also set a custom pin , not the default 0000

My bluetooth is quiet, but its also static-y. I never had any issues with my G6 and now I get static clipping every 10 or so seconds. Its unbearable.

jagadeesh16 said:
I had the same issue, but when I made the phone discoverable and initiated bt from the car stereo it seemed to work.
I also set a custom pin , not the default 0000
Click to expand...
Click to collapse
I'm not really having an issue pairing it, but it's just connecting after pairing is the problem.
I have changed the default pin. I can see it popping up and down the car stereo a few times in the bluetooth settings before it just gives up.
As for the other issues, I'm not having a problem at all with audio volume, nor popping/static when it finally does connect.

My volume is super low when connected to Android Auto and streaming music. Have to turn the radio up to max. However, I'm assuming that's an AA issue or Android issue, as it seems many others are having the same problem with different phones. Been thinking of adding an aftermarket amp to the car. Maybe I should pull the trigger. Lol

Phreak411 said:
My volume is super low when connected to Android Auto and streaming music. Have to turn the radio up to max. However, I'm assuming that's an AA issue or Android issue, as it seems many others are having the same problem with different phones. Been thinking of adding an aftermarket amp to the car. Maybe I should pull the trigger. Lol
Click to expand...
Click to collapse
Be careful that a bugfix doesn't come and blow your eardrums out, lol.

Milkshakes00 said:
Be careful that a bugfix doesn't come and blow your eardrums out, lol.
Click to expand...
Click to collapse
LOL that would be my luck
.

My OnePlus 7t connects fine and phone works for calls on 2014 cts. The sound comes out of phone can change song on head unit but I can't get audio to play through car. Anyone else get this?

Yeah music stutters with car player... Only calls work. Music works on headphones etc. I couldn't find solution, did network reset, cleared cache. Nothing works.

Seriously!
I've wasted at least two hours already trying all the recommended steps: from flicking icons on and off to a full phone reset.
Still no connection to my Suzuki S-cross car. Multiple previous phones have connected effortlessly.
Even the $50 temporary five year old borrowed phone could handle it.
Anyone got any other suggestions? Yes, tried the AVRCP setting change from 1.4 to 1.6. That didn't work either...
Barebones system reset from scratch running O2 OS 10.0.6HD65AA
Any suggestions greatly appreciated.
I need to be able to talk and drive!

Reset the car radio and clear all pairing data if you can. Then try again.

autosurgeon said:
Reset the car radio and clear all pairing data if you can. Then try again.
Click to expand...
Click to collapse
Thanks for the suggestion.
Tried that.
Tried one other car - no problems.
Tried a tablet and a very old phone with the car and suprise - the car's bluetooth seems to be the problem.
I will try and find out if I can fix the car!
UPDATE: Morale of the story - read the car manual very very carefully and go though each tedious step = SUCCESS

mikefnz said:
Thanks for the suggestion.
Tried that.
Tried one other car - no problems.
Tried a tablet and a very old phone with the car and suprise - the car's bluetooth seems to be the problem.
I will try and find out if I can fix the car!
UPDATE: Morale of the story - read the car manual very very carefully and go though each tedious step = SUCCESS
Click to expand...
Click to collapse
Yep most have lots of tedious steps that are different model to model and if not followed exactly will cause this problem on occasion..

In my case music starts to be scrambled after 10 minutes or so of listening. When I take the phone (so the watch pops up) or turn on the screen it immediately works fine again, but when being put aside and the screen turns off, the issue starts again ..
Also in the early days of my previous 5t I had the same issues but some fix was delivered together with oxygen os update. And now the same story again

I have a different issue with Bluetooth:
- OP7T connects to car Bluetooth fine
- I can make/answer calls
- Bluetooth media works fine
The problem is with Google Assistant & car audio:
- it was working as intended until the latest update - 10.0.15 - I was pressing the button on the steering wheel the google assistant was answering questions through the car bluetooth, no need to switch to bluetooth media.
- after the latest update, when I press the button on the steering wheel, Google assistant pops on the phone , starts to answer question, but cuts off after 5 seconds. the command still goes through and Assistant still runs, but does not come up on the car audio.
- it looks like the Assistant is not connecting to the car as a hands free, but as to a bluetooth handsets.
Anyone experiencing this?

PX5 MTCE with DSP Subwoofer RCA problem

hI, after get in the car to start driving, in some cases the subwoofer just dont get signal from the unit, the only thing that makes it come back is to unplug the main radio fuse ( in the car ) wait few seconds and plug in back. ( Then start the car/ Ignition again ) , reset button makes subwoofer pop and after the restart still no sound, all other outputs like front/rear RCA outputs and front/rear speaker unit amplifer working fine always
I check RCA OUTPUT when i get the problem and there is not signal, it's like it's muted, this is happening like 1 time per week, because i have it on auto sleep mode, the unit doesn't power off when I cut the ignition so that is the reason I need to remove the fuse, another workarround is to put power mode to 1 minute, cut the ignition, wait 1 minute to get sure unit is totally off and start again, problem solved but...
Android 9 20190815
MTCE_GS_V3.30_4
Gracias!

Did you find solution ? i have updated my MTCE_GS_V2.78_3 to MTCE_GS_V3.44 and my subwoofer stopped playing... PX5 DSP unit.