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  #13  
Old 09-16-2013, 05:53 AM
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Re: ACC / FCW Error Message

I have a GC 2012 diesel and had a similar issue.
Problem s I have ascertained is that when parking that the front bumper actually had touched the garage wall. Sensor originally showed i still had one bar showing but actually touched the wall. No visible damage but driving next day square bezel around radar sensor moving causing error messages FCW / eTC.

After pulling plastic under cover off front bumper bar found that because of the light bump on the plastic front bumper their is 3 screws holding the radar sensor. They are easily popped as they are only held in by a plastic grommet which each thread screws thru. Unless checked and are firmly in place the sensor will slightly distort its level even with square bezel in place.
If you still get error messages FCW etc it is one of the 3 metal screws which are held in place by a plastic insert that hold the radar sensor is still loose- causes radar sensor to either pick up road to the left or right or elevation is down.
The parts look minimal- just a plastic grommet which one off the small screws screw into needs replacing.

Hope this helps -
Strategy from Australia
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  #14  
Old 10-18-2013, 04:30 AM
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Re: ACC / FCW Error Message

Hi all

has anyone fitted a bull bar and looked at moving the ACC sensor from a very exposed bottom location to the top of the bumper bar section of a bull bar?

Gazz
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  #15  
Old 06-21-2014, 05:03 AM
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Re: ACC / FCW Error Message

At 9600 miles I began to receive FCW/ACC errors to wipe radar, pull over to wipe and radar protective shroud missing. I did not hit, nor was I hit with anything that I am aware of. Took to dealer and the service manager looked at it with a befuddled look and then said he would order a new cover under warranty. Hopefully system will work correctly once new cover is installed. Been waiting 3 days now for the part to come in. Will update after part installed. It's nice that parts just fall off a 50k vehicle.
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Old 06-21-2014, 11:53 AM
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Re: ACC / FCW Error Message

Quote:
Originally Posted by Gazz1958 View Post
Hi all

has anyone fitted a bull bar and looked at moving the ACC sensor from a very exposed bottom location to the top of the bumper bar section of a bull bar?

Gazz
Ummmmmmm......that doesn't sound like a good idea unless you are going to disable the ACC system and not use it. I would bet you can't just relocate it and have it work like it should since it is calibrated / work in conjunction with a camera on top.
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  #17  
Old 06-28-2014, 05:03 AM
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Re: ACC / FCW Error Message

Follow up to ACC/FCW errors and missing shroud at 9600 miles. Turns out my radar eye must have been hit with road debris as dealer claims radar camera eye is damaged as well as mounting bracket screw - replacement unit with installation is 1600$. Thankfully my dealer is completing this entirely under warranty. Obviously these units are very vulnerable due to physical location.
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Old 02-14-2015, 08:44 AM
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Re: ACC / FCW Error Message

I have a 2014 GJC O Diesel with 28000 miles. started getting the ACC/FCW "lens needs cleaning" warning. took to the dealer. They said the trim is missing and the lens shows impact damage, and submitted it to Chrysler for warranty, but it was denied because of impact damage. suggested I process the $1850 cost through insurance. I don't recall hitting or being hit by anything. Seems that Chrysler may have a poor design on its hands. How do we go about requesting an engineering investigation for a Chrysler fix? any ideas?
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Old 02-14-2015, 10:29 AM
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Re: ACC / FCW Error Message

bsc', unfortunately, anything located in that particular area is susceptible to physical damage from road debris, etc., whether it's electronic in nature or just visual trim. It's always been that way on vehicles and always will be that way. The fact that a trim part is actually missing and evidence of physical damage to the sensor is evident unfortunately isn't a design issue. "Something" caused that damage and it's unlikely that Chrysler or any other manufacturer would take responsibility for that under warranty. There is likely a specific exclusion for that in the warranty language, too.
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  #20  
Old 02-14-2015, 11:54 AM
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Quote:
Originally Posted by bschneidva View Post
I have a 2014 GJC O Diesel with 28000 miles. started getting the ACC/FCW "lens needs cleaning" warning. took to the dealer. They said the trim is missing and the lens shows impact damage, and submitted it to Chrysler for warranty, but it was denied because of impact damage. suggested I process the $1850 cost through insurance. I don't recall hitting or being hit by anything. Seems that Chrysler may have a poor design on its hands. How do we go about requesting an engineering investigation for a Chrysler fix? any ideas?
Wow $1850, the trim ring is just plastic with minimal cost and fairly easy install on the sensor so that sensor part sure has a heavy price tag.
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Old 02-14-2015, 01:00 PM
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Re: ACC / FCW Error Message

Try just replacing trim first. I has having same problem from get go with my GCO only to discover trim was never installed on vehicle. Dealership still charged me the $21 for the trim, wasn't worth my time to argue over $21. BUT no problems with FCC/ACC since trim was installed.

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  #22  
Old 02-18-2015, 11:49 AM
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Re: ACC / FCW Error Message

I wonder why Jeep put our ACC sensors in such a vulnerable spot? My MDX had the sensor in the grill behind a clear piece of plastic. It seems like that is a better solution when it comes to dealing with road debris...plus it is going to make it very difficult for me to install my prerunner :-(
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Old 02-19-2015, 10:38 AM
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Re: ACC / FCW Error Message

I suspect this was platform related...remember, this platform version of the Grand Cherokee was co-developed with the ML. While in "real life" this turns out to be a spot that's somewhat vulnerable to road hazards, aesthetically, it works well and doesn't interrupt the Jeep grill design higher up. As to interfering with aftermarket products like the prerunner...well...that's marketing related. The vast majority of the JGCs produced (1200 per day) never leave the road, especially the upper trim levels where electronic features like this are either standard or a popular option. Jeep's design is to support the larger market as it exists.
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  #24  
Old 02-19-2015, 10:57 AM
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Quote:
Originally Posted by Jim_in_PA View Post
I suspect this was platform related...remember, this platform version of the Grand Cherokee was co-developed with the ML. While in "real life" this turns out to be a spot that's somewhat vulnerable to road hazards, aesthetically, it works well and doesn't interrupt the Jeep grill design higher up. As to interfering with aftermarket products like the prerunner...well...that's marketing related. The vast majority of the JGCs produced (1200 per day) never leave the road, especially the upper trim levels where electronic features like this are either standard or a popular option. Jeep's design is to support the larger market as it exists.
I totally agree with you on the aesthetics, and I am sure that was thier reasoning. While I understand and accept that most JGC's will never see dirt and alot of the ones that do will only do so on well traveled/maintained dirt roads, I still thing this was an egregious oversight. Especially for a company who touts it's go anywhere attitude. Don't get me wrong, I LOVE my Jeep but I just wish they had come up with a better place for the ACC. As far as the aftermarket parts, i am sure they could care less about that stuff and rightfully so. There is no way they can accommodate any and all aftermarket parts or ideas. I am just going to have to figure out a way to remount the ACC on my prerunner so it is in the same exact location as it was from the factory, make sure it has a clear line of sight and keep it well protected...piece of cake. ;-)
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