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Lane Change Assist Missing Since Software Upgrade

1006 Views 22 Replies 7 Participants Last post by  JohnM
I upgraded my car's software to the latest version a couple of weeks ago. I'm not 100% certain that's relevant, but I've been missing lane change assist since then. I have the option to turn it on in settings, but the icon never appears while I'm driving with cruise control anymore, and the car will not change lanes on its own anymore. I used this feature a lot since buying the car, so I definitely know how to use it. I've changed nothing else. It just disappeared.

Any thoughts?
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Isn't that a switch on the left side of the dash by the steering wheel? Maybe you bumped it.
Isn't that a switch on the left side of the dash by the steering wheel? Maybe you bumped it.
It's not a switch that I can see. I can only see it buried in the settings menu. I don't have a physical button for it. I DO have lane-keep assist, but that's a different thing.
I upgraded my car's software to the latest version a couple of weeks ago. I'm not 100% certain that's relevant, but I've been missing lane change assist since then. I have the option to turn it on in settings, but the icon never appears while I'm driving with cruise control anymore, and the car will not change lanes on its own anymore. I used this feature a lot since buying the car, so I definitely know how to use it. I've changed nothing else. It just disappeared.

Any thoughts?
Are you on an HDA road? As in, you see the HDA icon on the dash? Lane change assist only works on HDA roads, which are typically divided highways.

I assumed you've made sure that the feature is still enabled in the settings? Is HDA altogether enabled? Some software updates have turned things on and off at random in the past (like CarPlay/Android Auto or split-screen CarPlay/Android Auto). So I would double-check your settings.
Are you on an HDA road? As in, you see the HDA icon on the dash? Lane change assist only works on HDA roads, which are typically divided highways. I assumed you've made sure that the feature is still enabled in the settings? Is HDA altogether enabled? Some software updates have turned things on and off at random in the past (like CarPlay/Android Auto or split-screen CarPlay/Android Auto). So I would double-check your settings.
It is definitely turned on in settings, and I only use it on the interstate, on the same stretches where I have always used it. The icon does not show up on the dash at all anymore. Nothing has changed except the software update I did.
Since the May release was pulled for a few weeks, it may be worthwhile to download it again and reinstall. May be something that got fixed in latest build.
It is definitely turned on in settings, and I only use it on the interstate, on the same stretches where I have always used it. The icon does not show up on the dash at all anymore. Nothing has changed except the software update I did.
So is it just lane change assist, or HDA altogether that is no longer working? HDA relies on the map database, so if all of HDA isn‘t working at all, I would do what @Mickey suggested above and re-download the update.
Lane-keep works, but lane-change is MIA. I'll re-do the software update this week and see if that does it.
Lane-keep works, but lane-change is MIA. I'll re-do the software update this week and see if that does it.
Lane keep doesn't require HDA. Lane change does. I was asking whether HDA was working at all. As in, do you see the letters HDA on your cluster on divided highways where you know for a fact that this worked before the update.

But certainly, do the update again and see what happens.
Lane keep doesn't require HDA. Lane change does. I was asking whether HDA was working at all. As in, do you see the letters HDA on your cluster on divided highways where you know for a fact that this worked before the update. But certainly, do the update again and see what happens.
Nope. The dash icon has vanished.
Nope. The dash icon has vanished.
Definitely sounds like your update may have screwed something up with the map database. Have you tried using the nav since the update? I wonder if it even works...

Let us know if the update fixes it.
Update: I tried reinstalling the software but my car will not let me. It says the update is incompatible with my car, even though it is the software I downloaded through the updater app. I tried twice and it failed both times. It’s almost time for my first service anyway, but it’ll be two months before the dealers next service appointment.
Update: I tried reinstalling the software but my car will not let me. It says the update is incompatible with my car, even though it is the software I downloaded through the updater app. I tried twice and it failed both times. It’s almost time for my first service anyway, but it’ll be two months before the dealers next service appointment.
Try re-downloading the software via the updater. Particularly since they re-released it a few days ago.
Try re-downloading the software via the updater. Particularly since they re-released it a few days ago.
I did twice. No-go. Meh.
I did twice. No-go. Meh.
Don't know what to tell you then. The error you see is a little strange; I thought it would let you re-apply the update, but I don't honestly remember - not something I try.
It does let you reapply the update. It's how I fixed the radio problem with the October 2022 update. I downloaded the February patch update in early April and the car said you already have this version would you like to reinstall
It does let you reapply the update. It's how I fixed the radio problem with the October 2022 update. I downloaded the February patch update in early April and the car said you already have this version would you like to reinstall
I know it's supposed to, but it's failed several times. I've downloaded the update from the Nav Updater app, but the car keeps saying the update is incompatible. I am currently re-downloading it again after several days to see if anything's changed. I talked to the dealer service today and they said they've had several reports of very weird software issues lately. Fingers crossed today is my lucky day...
I know it's supposed to, but it's failed several times. I've downloaded the update from the Nav Updater app, but the car keeps saying the update is incompatible. I am currently re-downloading it again after several days to see if anything's changed. I talked to the dealer service today and they said they've had several reports of very weird software issues lately. Fingers crossed today is my lucky day...
Just failed again. This is what pops up a few seconds after hitting the update button. And yes, I’m sure I’m downloading the right software. I’m using the Nav Updater software on my Mac to create the thumb drive.

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Have you tried downloading it again but on a PC. I know it shouldn't matter.
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