ZedZed

I tried this today - turned off Location Services (GPS) on my phone, got into the car, Android Auto started up, Waze started up and guess what? Navigation still worked. So you were right @drawz - the HU is able to use its GPS with Android Auto/Waze independently of the phone's GPS. 👍😊

I see no reason to leave Location Services turned off on my phone, so have re-enabled it. I wonder how the HU/Phone negotiate which is to use GPS? Does it default to the HU's GPS and only use the Phone's GPS when the HU GPS isn't available? Or vice-versa? Not that it matters much - so long as it works every time, I am more than happy.

StanfordBear

Thanks. Found the AUX app but camera still not displaying. I think something is possibly malfunctioning with my front cam.

StanfordBear

Thanks for the suggestion. I plugged the front cam into the reverse input and no image either. I guess the front cam somehow stopped working after I installed the 7862. Will have to recheck my front cam wiring later.

drawz

CarPlay will pull the GPS data from multiple sources, including the head unit, phone itself, cell towers, vehicle speed and direction, etc. and integrate that data. GPS signals include how many satellites are connected and how precise the location data is. As long as everything is working properly, the head unit should be more accurate with a bigger antenna and fewer obstructions.

I had a different experience when disabling location services while connected to CarPlay. In that case the apps basically told me to turn it back on. I think it disabled the head unit data as well in this case. Agree there’s no reason to leave it off though.

edit just realized your on Android Auto. Sounds like it works similarly with the possible exception of location services off on the phone side.

andy2111

It's likely to be power or earth I imagine - where are you taking your +12v feed from?

StanfordBear

@andy2111 I had it done in a shop awhile ago. It was always powered on and worked great with the PCM-Isudar combo. I'm going to have to somehow figure out where the power & ground was tapped into.

On a completely different note, I did all the things in the guide about cranking the PCM volume to 100 and centering the Bose fader before taking out the PCM. Unfortunately no sound whatsoever from the rear speakers. Not the end of the world, but I'll admit that I had my hopes up that there would at least be some rear speaker sound.

andy2111

Good luck and keep us posted on the camera issue.

Regarding rear speaker sound... Has anyone with the 7862 and Bose combo got rear sound working?

Just want to establish if anyone has this working, or not, so we can focus either on a generic problem of that particular combo, or issues with individual installations

ZedZed

Yes I get sound from the rear speakers with Bose. But it's in the Panamera which has a different HU. I was miffed at first after installation since the rear speakers were silent. But after much fiddling in the EQ/fader section I eventually got sound. The entire menu structure of that HU is different to the Chstek and Erisin units though so it may have had different fiddling when rooted. (I assume these units are rooted). Shows it's possible though. That unit is running Android 10, if that matters. AFAIK the processor is the same. I will run a checking app on it at the weekend and report back.

andy2111

Yep, I know it works for you Zed! 😁

I'm trying to determine if anyone with the Chstek 7862 and Bose combo has it working to see if this specific pairing fails to work for everyone, or for just some installations

ZedZed

bmxtreme

Maybe a combination of these can accomplish the rear channel output? anyone wants to give it a try ?

1. 4-channel to fiber optics (toslink)
https://www.aliexpress.us/item/32568...Cquery_from%3A

2. MOST with toslink input
https://www.aliexpress.us/item/22558...2usa4itemAdapt

drawz

I think it’s important to note which MOST adapter is in use when reporting your experience. I am pretty sure mine works with the Macan 7862 FYT unit and TOSLINk to MOST25 adapter, but I want to verify.

In terms of sending 4 channels via MOST, I think the key is what the MOST adapter and the amp support/expect. I think it’s unlikely that the two adapters linked earlier would be able to make this work, but you never know until you try.

q8linux

mine is working...

bmxtreme

I know @RwdConnor mentioned he has rear audio as well with his Qualcomm unit.
@q8linux which unit did you get? Perhaps there's differences in these MOST converter or the Audio out wiring.

q8linux

double post..