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  #1  
Old 03-11-2014, 06:10 PM
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Issues with ACC

Is anybody having issues with the ACC/FCW disabling itself? I get the following message on the console display:

ACC/FCW
Unavailable
Wipe Front
Sensor

Of course I first cleaned the sensor. It didn't help. So I brought it into the dealer. The dealer cleaned the sensor and cleared the codes that they said were logged. It worked OK for about a week and the issue came back.

I'll have to bring it in again. I'm seriously bummed about this because the ACC is really handy when you are stuck in bad traffic.

Any body else have any similar experiences?

Thanks- Eric
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Old 03-11-2014, 08:53 PM
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Re: Issues with ACC

I've had that message pop up a couple times, but both were as a result of snow and ice on the sensor. I've never had any problems past those 2 times. Quite honestly, I forgot I had ACC. I took a 200 mile trip exclusively using ACC late last year and it was great. I've never tried it in heavy traffic though.
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  #3  
Old 03-11-2014, 09:36 PM
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Re: Issues with ACC

Quote:
Originally Posted by E_Holst View Post
Is anybody having issues with the ACC/FCW disabling itself? I get the following message on the console display:

ACC/FCW
Unavailable
Wipe Front
Sensor

Of course I first cleaned the sensor. It didn't help. So I brought it into the dealer. The dealer cleaned the sensor and cleared the codes that they said were logged. It worked OK for about a week and the issue came back.

I'll have to bring it in again. I'm seriously bummed about this because the ACC is really handy when you are stuck in bad traffic.

Any body else have any similar experiences?

Thanks- Eric
YES!!! I have the same problem, except the dealer's "fix" (same as yours) didn't even work temporarily. Also, sometimes it will work for half an hour than not work for half an hour then start working again, sometimes the intervals are less, and other times it just doesn't work at all.
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Old 03-11-2014, 09:47 PM
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Re: Issues with ACC

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Originally Posted by JeepGCOverland View Post
YES!!! I have the same problem, except the dealer's "fix" (same as yours) didn't even work temporarily. Also, sometimes it will work for half an hour than not work for half an hour then start working again, sometimes the intervals are less, and other times it just doesn't work at all.
Make that 3 !

The dealer took in the car, drove it 15 miles and could not repeat the problem. I actually believe they coulnd't because it is only at high speed (60-70 mph) when it fails, not at low speeds (30-40 mph). Of course the sensor is perfectly clean. Mine also re-enables itself within 5 minutes of getting the ACC/FCW Unavailable message.
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Old 03-11-2014, 09:51 PM
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Re: Issues with ACC

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Originally Posted by f1anatic View Post
Make that 3 !

The dealer took in the car, drove it 15 miles and could not repeat the problem. I actually believe they coulnd't because it is only at high speed (60-70 mph) when it fails, not at low speeds (30-40 mph). Of course the sensor is perfectly clean. Mine also re-enables itself within 5 minutes of getting the ACC/FCW Unavailable message.
Yep, that is how it is 95% of the time with me (reactivates/dies after ~5 minutes). Also, the dealer was also unable to replicate the problem on mine, except they drove it 40 miles.
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Old 03-11-2014, 09:57 PM
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Re: Issues with ACC

Quote:
Originally Posted by JeepGCOverland View Post
Yep, that is how it is 95% of the time with me (reactivates/dies after ~5 minutes). Also, the dealer was also unable to replicate the problem on mine, except they drove it 40 miles.
Let me guess...early build, like mine...
My problems started in February 2014. It was fine before that.
In fact here's a picture from September 2013 - yes the ACC worked, despite the mud. I think it is related either to some other concurrent updates on the car or cold weather/condensation/freezing or...faulty electronics.
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File Type: jpg WP_20130907_025 (Large).jpg (69.5 KB, 53 views)
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Old 03-11-2014, 10:18 PM
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Yeah I could see where you may have issues with your FCW..nice pic.
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Old 03-11-2014, 11:53 PM
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Re: Issues with ACC

My 2014 Overland's Forward Collision Warning has activated when no vehicle was ahead of me. On the other hand, when it should activate, it doesn't. I no longer rely on it or trust it. My Overland was built in April 2013. In mid-summer of 2013, Jeep began to install second-generation Bosch electronics, which I wish my Jeep had.
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Old 03-12-2014, 02:09 AM
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I have an 8/13 build with ACC and have been having same prob. Worked fine, up to about a month ago.
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Old 03-12-2014, 04:32 AM
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I believe there's a TSB flash for that check the W2K site.
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Old 03-12-2014, 05:42 AM
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Re: Issues with ACC

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Originally Posted by CHALLENGERBIZJET View Post
Yeah I could see where you may have issues with your FCW..nice pic.
Negative. I did not have problems with ACC at that time, in september 2013, even dirty as you see it. I have now.
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Old 03-12-2014, 10:43 AM
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Re: Issues with ACC

Quote:
Originally Posted by f1anatic View Post
Let me guess...early build, like mine...
My problems started in February 2014. It was fine before that.
In fact here's a picture from September 2013 - yes the ACC worked, despite the mud. I think it is related either to some other concurrent updates on the car or cold weather/condensation/freezing or...faulty electronics.
Actually it is not an early build, it's a September build so it has the updated ACC w/ Stop. And while it was sprinkling the first time I got the warning, I am in sunny warm Southern California so it is not a weather thing at all.

And like one of the other posters, now it is somewhat intermittent. After I get the warning, I can re-enable 5-15 minutes later and will work for a while (less than 30 min). However, before I brought it into the dealer the first time, once I started getting the error message, it would never re-enable.

Also, when this occurs, the FCW button light is lit indicated that FCW is disabled. I really hope there is a fix and that this is not "normal."

-Eric
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