Adaptive Cruise Control Disengaging - Chevy Malibu Forum: Chevrolet Malibu Forums
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post #1 of 28 (permalink) Old 01-24-2017, 08:37 PM Thread Starter
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Adaptive Cruise Control Disengaging

How many people are having trouble with the adaptive cruise?? 2016 Premier. I have had many times a message that Adaptive Cruise Temporarily Unavailable. This happens fairly often when there is really heavy rain, snow or a lot of slush, etc. Although irritating, I thought it was understandable.
Lately, have started getting a message that Adaptive Cruise Control Disengaging, and it does shut down. These have been happening for no apparent reason, day and night, no bad weather. When these instances happen it will immediately start working again if I hit the set button again. This is not like the temp unavailable message that has happened in bad weather and the cruise will not work until weather clears or slush melts.

Irritating. Last trip it kicked off 4 times in a two hour span. Anyone else having this experience? I have one free oil change left and will mention when I take it in. I just know they have trouble with these intermittent problems.
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post #2 of 28 (permalink) Old 01-26-2017, 10:25 AM
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Re: Adaptive Cruise Control Disengaging

I have had the same intermittent problem in my Premier. I even had the dealer reset the software but it still happens once in a while. See my thread below.

https://www.chevymalibuforum.com/foru...available.html

Not a weather issue for me as I live in L.A. but happens when the traffic is more stop and go. So radar and electronics are working harder than just hiway cruising.

Usually is available again after a few minutes so I have not returned to dealer as this is now so intermittent.
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post #3 of 28 (permalink) Old 02-07-2017, 08:46 AM
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Re: Adaptive Cruise Control Disengaging

Quote:
Originally Posted by Wxman View Post
How many people are having trouble with the adaptive cruise?? 2016 Premier. I have had many times a message that Adaptive Cruise Temporarily Unavailable. This happens fairly often when there is really heavy rain, snow or a lot of slush, etc. Although irritating, I thought it was understandable.
Lately, have started getting a message that Adaptive Cruise Control Disengaging, and it does shut down. These have been happening for no apparent reason, day and night, no bad weather. When these instances happen it will immediately start working again if I hit the set button again. This is not like the temp unavailable message that has happened in bad weather and the cruise will not work until weather clears or slush melts.

Irritating. Last trip it kicked off 4 times in a two hour span. Anyone else having this experience? I have one free oil change left and will mention when I take it in. I just know they have trouble with these intermittent problems.
This certainly isn't what we like to hear, Wxman. Were you able to address the cruise control concern with your dealer as planned? Please don't hesitate to send us a private message with details if we can be of additional assistance!

All the best,

Angela O.
Chevrolet Customer Care


Available Monday-Sunday


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post #4 of 28 (permalink) Old 02-20-2017, 10:29 AM Thread Starter
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Re: Adaptive Cruise Control Disengaging

Just to close this out. Waited until it was free oil change time and had them look at this cruise control issue while it was there.
According to the invoice they found two codes U0420 and U0415. Those coupled with the description led them to follow DOC #4538114, reprogrammed power steering control module with latest calibrations.

Service writer said even though it might not seem they are connected the service document mentioned 'our symptoms' and they thought this was probably a good fix.
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post #5 of 28 (permalink) Old 02-20-2017, 11:39 AM
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Re: Adaptive Cruise Control Disengaging

Thank you for following up! That's good, detailed info for other owners with a similar problem.


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post #6 of 28 (permalink) Old 03-16-2017, 10:12 AM
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Re: Adaptive Cruise Control Disengaging

Quote:
Originally Posted by Wxman View Post
According to the invoice they found two codes U0420 and U0415. Those coupled with the description led them to follow DOC #4538114, reprogrammed power steering control module with latest calibrations.

Service writer said even though it might not seem they are connected the service document mentioned 'our symptoms' and they thought this was probably a good fix.
I took my car in for yearly maintenance and asked them to look into my intermittent problem with Adaptive Cruise Control disengaging. I took info on doc you posted and asked for software update.

They found no error codes for ACC but did the upgrade as I requested. I haven't tested ACC yet as I have not taken an extended hiway trip.

The steering feel after update is slightly firmer, needing a tiny bit more effort to turn the wheel. Feels sportier. I like it.

Did your steering feel change?
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post #7 of 28 (permalink) Old 03-16-2017, 04:31 PM Thread Starter
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Re: Adaptive Cruise Control Disengaging

Can't really say I noticed a change in the steering feel, but my wife is the primary driver of the car. If it did change it is nothing that bothers us. It was never anything like my Silverado.
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post #8 of 28 (permalink) Old 03-16-2017, 05:10 PM
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Re: Adaptive Cruise Control Disengaging

It's not bothersome in anyway to me, it's a subtle feel - not night and day, but I could feel it at once, at least on my car. Less power assist and more feel of the wheels and road is best I can describe it.
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post #9 of 28 (permalink) Old 04-11-2017, 10:33 AM
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Re: Adaptive Cruise Control Disengaging

I am having the same problem with my 2017 Premier..........on a 90 mi trip it disengaged 5 times.......i read in the owner's manual it will disengage if it dosen't see anything which must mean traffic.....if this is the case then ACC is useless here because where i live you can drive miles and miles without seeing any traffic.....the only way i can get it to work again after it disengages is to pull over to the side of the road and turn off the ignition and let it sit for a couple of minutes and then restart and it will work again for a ways.
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post #10 of 28 (permalink) Old 04-12-2017, 09:26 AM Thread Starter
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Re: Adaptive Cruise Control Disengaging

Never know if it is the same problem or not, but I would interpret the 'can't see anything' as sensor/camera blocked by dirt, slush, etc., not 'there is nothing to see'.

At any rate I have not had any problems since the fix I described above.
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