Question Android Auto bluetooth connectivity problem

jordanvvvv

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Feb 20, 2015
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Hi,

I have a 2024 Toyota BZ4x and a Samsung Galaxy S24 Ultra phone. Android Auto is great, when it works - I use it to listen to Audible on roadtrips and prefer Google Maps to the native Toyota navigation system. Hands free phone and access to contacts is also important.

Sometimes when I get in the car, the Android Auto app links seamlessly with the car immediately via bluetooth. At other times (and perhaps increasingly with time??), it loads the Toyota system and when I tap on the gear wheel on the car's infoscreen, go to Bluetooth Devices, and then tap on Use Android Auto, the system wheel spins for a while and then says something to the effect of "can't connect, use a USB cord". Maybe I need to explore using USB cord more, but if memory serves, that isn't an instant solution either.

This happened a few days ago at 5am as I was sitting in my driveway for maybe 10 minutes trying to connect so that I could get on the freeway for a 180 mile drive, aware that as each moment passed, morning rush hour traffic was building. First question - is this an Android issue or a Toyota issue? Second question - is that the wrong question? Maybe it's both. Third question - how do I solve this puzzle?

Whenever this happens, the first thing I do is check to see if my phone is paired with my car in the Bluetooth settings and usually it shows that it is already listed as "Paired". Nonetheless, I will turn Bluetooth off and back on and then attempt again to connect by tapping on the Toyota screen "Connect to Android Auto" (forgetting exact language). Often/Usually, the connection fails and I get the same message "can't connect now...."
Then I will either turn of the phone or the car or both, sometimes in sequence, sometimes simultaneously. Then I repeat the connection steps on the car's infotainment screen. Often the connection still fails.

On this particular occasion, I noticed that my phone's Bluetooth was paired to about 7 or 8 different devices, or at least they were listed as Paired. All of the other paired items are inside my home, not in the car (e.g. earbuds, TV, other phones, a camera), I started removing those from the paired list thinking maybe there was a conflict in the phone. It will be a hassle to reconnect them all, so I did not remove all of them. In any case, that didn't solve the problem.

I went through this again yesterday. Trying to get back on the freeway from Portland to Seattle late in the day, facing a long drive, wanting to get going. But I had to pull over for 10 minutes going through this confusing scenario again.

My phone is inside a plastic case - is that interfering with Bluetooth? But sometimes the car audio system will spontaneously start playing Audible when my phone is inside my house and the car is out in the driveway. Therefore, logically, signal strength shouldn't be the problem then. Sometimes I try holding the phone in different areas of the dash, wondering if there is a sweet spot.

And then Android Auto will suddenly magically appear on the screen, as if to say, "hello, I am awake now, you need me?" like a child who has difficulty waking up for school in the morning. And I have no idea how I suddenly succeeded at connecting.

p.s. I just checked to see if I have the latest version of the app running and I do. Someone said on the Toyota forum that I need to try turning off the WiFi controls on the phone. I think I've done that in the past, but can't remember now if it helped.

Any insights appreciated! Thank you.
 
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I've read lots of posts on various forums about seemingly no rhyme or reason to a collection of symptoms like you describe (and had some of those myself with my earlier lower tier Samsung phone) and I think in some cases there's a collection of things in combination that are at play. All I can suggest is to try to make sure everything on your phone (Android OS version, Bluetooth and WiFi settings, Android Auto App, permission settings....) are as up to date and normal as possible, and also for your vehicle's head unit. That and lots of searches about the symptoms and specifically for your phone model and head unit combination, to try understand what others might indicate for what improved and worked for their situations. Unfortunately, it'll probably feel like a wild goose chase. For me, it wasn't until I switched to the S24U that things got stable for me with wireless Android Auto, and I'll not discount the possibility that an underpowered phone processing and storage situation wasn't contributing (which shouldn't be the case for you unless you've got your phone really loaded up with tons of stuff and background processing and apps going on).
 
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If everything is up to date and all of that, my first thought would be to clear the cache for BT. Settings>Apps>tap the sort icon at the top of the app list>select Show system apps>OK>Bluetooth Agent>Storage>Clear cache. You could probably clear the data too, not sure if that would cause you to need to repair devices but it could. You'll also notice that there are 3 apps for BT. The one that says Bluetooth has no cache or anything to clear or repair. BT MIDI Services doesn't keep data.

You wrote so much but I don't recall you mentioning forgetting the connection and pairing to the car again but if the connection has soured making a new connection could help. Something could have gotten janky if there was an update or something that affected the handshake between the car and the phone.

How many other BT devices do you have paired to your phone when you're in the car? Not that there could be too many, but there could be one that is taking over the connection and affecting other connections. It may be prioritizing itself over other connections preventing or abating other items from connecting. Try disconnecting from any other BT devices and see if the connection happens as expected.

On a day when you're not in a hurry to be on the road, take some time to just sit in the car and try different things. If you only look at it when you're trying to leave, even if you happen upon something you're more focused on getting moving than "what combination of things did I just do" and "which combination was the key", when you're sitting on the side of the road trying to get moving. This way you can do things like, Oh I got it, now let me disconnect and see if that same combination of steps gets me to the same spot, or whatever. I'm sure you understand.

In the meantime, to spARTacus' suggestion, here are some related forums that may be of help.

I think this may just be one thread, but there was a lot of engagement on the site for an Infotainment system question if you wanted to try and post your question there.

Let us know what you find and we'll try to offer more advice.
 

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