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Forward Collision mitigation system. Bad design?

18032 Views 21 Replies 14 Participants Last post by  Mikelibramania
i found out what can be the result of a bad design or bad engineering on my 2 weeks old Renegade
Last Saturday, I was driving while snowing and an alert prompted me that the FCW radar was turned off, since it was dirty.
So bad for a vehicle intended TO BE dirty.
I'll contact my dealer to check if it's my car or it's really by design....

I'll keep you posted

Regards from Monza, Italy

Giacomo
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i found out what can be the result of a bad design or bad engineering on my 2 weeks old Renegade
Last Saturday, I was driving while snowing and an alert prompted me that the FCW radar was turned off, since it was dirty.
So bad for a vehicle intended TO BE dirty.
I'll contact my dealer to check if it's my car or it's really by design....

I'll keep you posted

Regards from Monza, Italy

Giacomo
Thats normal. Rear parking sensors are the same way. If they get dirty or if you wax your car and don't remove the build up they will not work.
i found out what can be the result of a bad design or bad engineering on my 2 weeks old Renegade
Last Saturday, I was driving while snowing and an alert prompted me that the FCW radar was turned off, since it was dirty.
So bad for a vehicle intended TO BE dirty.
I'll contact my dealer to check if it's my car or it's really by design....

I'll keep you posted

Regards from Monza, Italy

Giacomo
Disappointing when a feature doesn't work as expected.

Are you able to comment at all about how the vehicle performs on snowy/icy roads? I have to travel mountain highways in the winter months and frequently encounter poor conditions. I was considering a Subaru but don't like their CVT and interior finishing. I'm hoping that the Renegade will check off a winter driving box on my wishlist :)
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Same issue... but expect it.

I have a 2014 Cherokee TH with the same system. Its mounted low on the front fascia and it has been caked with snow and road sludge to the point of system warnings that it is not functioning. This is normal.
I'll add this to the list of reasons I am not terribly impressed with driver notifications of this nature. If this thing continued to sound or flash on a snowy slushy day, I would take it back to the dealer and demand a vehicle without it.

It just seems like it would be more of a distraction than help. I still caveat this statement with the fact that I have not tested any of these systems out myself. And other than being hit by a drunk driver, I have not needed any of these systems yet (knock on wood).
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That is the reason why i didn´t want that Crap in my Renegade ... i knew this from a Toyota that even Motorcycles taking over the system Brakes when the Bike gets in front of you or just doesn´t see the Bike when driving on the left or right Lane Side. Also its mentioned in the Manual that if your Front window is dirty the system shuts off because the camera can´t see anything ... so just disable it, its useless for you are the Driver who is responsible and not the Machine ... keep your Brain running when driving and dont let Machines do the Thinking
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I had to take a car with a stop/start system as my as-ordered car wasn't likely to be realized after a 6 month wait.

I'll never take another car that has crap on it I don't want.

And driving with a safety system off just isn't defensible to a jury.
I had to take a car with a stop/start system as my as-ordered car wasn't likely to be realized after a 6 month wait.

I'll never take another car that has crap on it I don't want.

And driving with a safety system off just isn't defensible to a jury.
The Start/ stop feature does suck. I had it in my previous car and I hated it during the summer. The A/C was constantly shutting off during the summer months. The only way to defeat it was to have the A/C on constant full blast.
I had to take a car with a stop/start system as my as-ordered car wasn't likely to be realized after a 6 month wait.

I'll never take another car that has crap on it I don't want.

And driving with a safety system off just isn't defensible to a jury.
Sure it is. It failed to function under normal use, so following the manufacturer's instructions, I turned it off. Go sue them, they have billions.

Mostly they are an excuse for an insurance discount.
The Start/ stop feature does suck. I had it in my previous car and I hated it during the summer. The A/C was constantly shutting off during the summer months. The only way to defeat it was to have the A/C on constant full blast.
Yup. I have to hit the off switch each time I start the car. And due the need for some systems to remain on (like A/C), It has to have a beefier battery, beefier and secondary electric oil pump for the transmission, beefier starter, etc. Just adds weight and $$ to the car.

In reality, the Stop/Start system was a poor answer to eek out a single MPG to help meet CAFE standards.

So while we're waiting for the Renegade to be released, we should start a thread titled: "Nice ideas on paper, Bad ideas in reality" to remind ourselves where not to waste our $$.
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I think that's common to many vehicles, not just the Renegade. So it does suck, but it is a problem with the technology, not with the Renegade.
I think that's common to many vehicles, not just the Renegade. So it does suck, but it is a problem with the technology, not with the Renegade.
its a problem with the drivers who need to be told of a forthcoming collision that they should of already noticed if they were using their eyes to drive...
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I either want to drive the vehicle and be in complete control of it without any distractions... or I want to get in, set my destination and take a nap.

This in between of bells and whistles (literally) to help you drive, I think is a misguided attempt at making vehicles safer, when in actuality, it is going to make people worse drivers. Why pay attention if the car pays attention for you?

I know this is off topic. It's unfortunate that slush can inhibit this function. I wonder if fog would inhibit it also (I'm assuming it would). Because heavy snow, rain, or fog is exactly when you need this function the most (because you can't see clearly even with your full attention on the road in front of you).
I think that's common to many vehicles, not just the Renegade. So it does suck, but it is a problem with the technology, not with the Renegade.
It's not a problem with the technology it is a characteristic of it.

It is sonar. Sonar works by bouncing a sound wave off an object and having it returned and calculating time to figure out a given distance. If the sensor is dirty where it can't give off of the single or can't receive it then it wont work.
It's not a problem with the technology it is a characteristic of it.
Like you said, it not a problem with technology, but I think its a problem with how we apply the technology.

Eg: People in RV's used to apply Cruise Control and go back and fix themselves a drink. But eventually people understood it.
In Jeep Renegade for forward collision mitigation they use a Bosch mid-range radar sensor (MRR) that work in 76-77 GHz band.
Bosch sources FCA most of safety electronic systems and is partner in the vehicle systems integration.

The radar in the Renegade is installed rear the plastic bumper near the left fog light.

Data from the radar are integrated with data from the camera that is located in the windshield (in front of the rear view mirror).
In Jeep Renegade for forward collision mitigation they use a Bosch mid-range radar sensor (MRR) that work in 76-77 GHz band.
Bosch sources FCA most of safety electronic systems and is partner in the vehicle systems integration.

The radar in the Renegade is installed rear the plastic bumper near the left fog light.

Data from the radar are integrated with data from the camera that is located in the windshield (in front of the rear view mirror).
MJAB, thanks for the information, you seem in the know.

Do you know why this is not offered on the Renegade Trailhawk? (the Cherokee Trailhawk has it)
Do you know why this is not offered on the Renegade Trailhawk? (the Cherokee Trailhawk has it)
Its pretty slick technology and I hope it works in all weather.

I can only imagine you take your Th out for a day of rock climbing and as you approach the rockface the system starts fighting you and your TH starts bucking like a spooked horse.

Or you're in Columbia and a kidnapper can stop your TH just by cutting in front of you.

Or you're a cop in a police TH and you're trying to spin a fleeing car but the system won't let you get close.

Sorry, but there are times I WANT TO RAM SOMETHING.

Wow. Guess its no FCA for me.
MJAB, thanks for the information, you seem in the know.

Do you know why this is not offered on the Renegade Trailhawk? (the Cherokee Trailhawk has it)
I don't know, I know about the radar since I always curious about sensors and application and searched a little about months ago.

What I noticed is that the radar should be, if I understood well the positioning, in the zone where there is one of the two red hooks (that You find in the U.S. version, but not in the european one. Pedestrian impact?)
Dear all,
Remember that this system can be disabled through the setting panel of the uconnect screen, in addition can be configured for short, mid, long distance.

It is not present in the TH Due bumper shape because it is placed where the TH has the left red hook
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