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  #1  
Old 06-05-2015, 10:05 AM
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Exclamation US probes complaints that Jeep SUVs brake for no reason

US probes complaints that Jeep SUVs brake for no reason
DETROIT (AP) U.S. safety regulators are investigating complaints that automatic braking in Jeep Grand Cherokees can come on for no reason.
The National Highway Traffic Safety Administration says the probe covers about 20,000 of the SUVs from the 2014 model year.
The agency says it has nine complaints that the autonomous brakes suddenly reduced the Jeeps' speed for no apparent reason.
The Grand Cherokee and other vehicles have cruise control systems that use radar and cameras to detect objects and automatically brake to avoid a crash. The systems are among the first steps toward cars that drive themselves.
Many people who complained said the mysterious braking nearly caused other cars to hit them from behind.
The agency will investigate how often the problem happens. The probe could lead to a recall.

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  #2  
Old 06-05-2015, 10:23 AM
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Re: US probes complaints that Jeep SUVs brake for no reason

I'm not surprised by this. It makes the hair stand up on the back of my neck with the auto brake operates - EVIC warning and chime. It's happened to me several times:

(1) going around a turning vehicle - the auto braking doesn't think "city driving" and there doesn't appear to be any steering vector input to the logic to judge a potential crash.
(2) a lane shifter triggering the ACC's brake function.
(3) pulling out of a tight parking garage space.

If the reported instances are spurious, then that's a real problem. OTOH, it wouldn't be surprising if the reporting drivers weren't really paying attention and thus didn't understand the why's of auto braking in their situation.

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  #3  
Old 06-05-2015, 10:32 AM
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Re: US probes complaints that Jeep SUVs brake for no reason

That's right .. Number 3 - I can't even drive in or out my garage without turning it off could be a sign to clean up the clutter in my garage as well.

I also noticed last week an acceleration when NOT on cruise control by exact 5 miles, when I put my foot of the pedal .. (happen twice, before I was on the highway with cruise control - but turned that off)

I will keep an eye on it too now. This all is software based and I'm sure fixable. BUT SCARY !!!!
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Old 06-05-2015, 08:53 PM
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Re: US probes complaints that Jeep SUVs brake for no reason

Number 1 is the one that gets me. I'm not a tailgater by any means, but the going around a car turning right gets me a lot. I've learned to swerve into the other lane when it's clear to avoid giving my wife a heart attack.


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Old 06-06-2015, 06:56 AM
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Re: US probes complaints that Jeep SUVs brake for no reason

i'm pretty used to the braking for a vehicle that is turning/exiting, not sure there is a reliable way to get around that.

The only false braking I have that bothers me is that it will sometime brake for overpasses

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Old 06-06-2015, 07:33 AM
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Re: US probes complaints that Jeep SUVs brake for no reason

I'm glad I don't have this on my Overland.
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Old 06-08-2015, 04:38 PM
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Re: US probes complaints that Jeep SUVs brake for no reason

I noticed the turning braking thing.I know to be prepared to put my foot on the gas to override that.Yes the radar eye does not think like a human.You will get used to covering the gas pedal just in case.
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Old 06-10-2015, 10:03 AM
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Re: US probes complaints that Jeep SUVs brake for no reason

Quote:
Originally Posted by Strotti View Post
That's right .. Number 3 - I can't even drive in or out my garage without turning it off could be a sign to clean up the clutter in my garage as well.

.......................
It's annoying that the park sense chimes for proximity in the front even when the vehicle is in reverse....and vice versa. Who decided that?

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Old 06-10-2015, 10:08 AM
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Re: US probes complaints that Jeep SUVs brake for no reason

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Originally Posted by Desert Hiker View Post
(2) a lane shifter triggering the ACC's brake function.
Desert Hiker
I tried to replicate this on my new Cherokee and it's not triggering the brake. Not sure if i do something wrong or they fixed it in my car which was build 1st April 2015.
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Old 06-10-2015, 10:10 AM
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Re: US probes complaints that Jeep SUVs brake for no reason

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Originally Posted by Desert Hiker View Post
It's annoying that the park sense chimes for proximity in the front even when the vehicle is in reverse....and vice versa. Who decided that?

Desert Hiker
I'm curious if they will be able to change that in an update or if we can turn that off somehow :-)
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Old 06-10-2015, 12:24 PM
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Re: US probes complaints that Jeep SUVs brake for no reason

Quote:
Originally Posted by Desert Hiker View Post
It's annoying that the park sense chimes for proximity in the front even when the vehicle is in reverse....and vice versa. Who decided that?



Desert Hiker

Maybe it chimes in the front so you don't turn the front corner into something while your attention is on what's behind you.


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