Forward Collision Warning

[Badgerdon]

Not sure about the 21 GCL, but, the 22 GCL Limited I have on order has the Intersection Collision System included as part of a package…the Lux Tech Group II. There is another braking system called the Ready Alert Braking which seems to be different than the Intersection Collision System. That Ready Alert Braking is standard across all trims it would seem.

For what it's worth, I don't think the GCL Limited and below trims have the full collision system. For example, the intersection collision avoidance appears to be on upper trim levels. MY21 had a lot of deletes on different trim levels as well, so I wouldn't be surprised if there were some vehicles without these systems included.

For a radar sensor you can't block it with tape and paper since the radio waves will just pass right through -- maybe aluminium foil or something to create a faraday effect. Snow makes sense in the situation described by BerettaBri since radio waves cannot penetrate water. Overall the goal in this thread seems to be to figure out how to test the system to figure out if and how it works, and I don't think there is a way to do this safely. These vehicles are designed to use the input of multiple sensors simultaneously to detect their surroundings and determine the actions for each situation, if any. It's near impossible to figure out what parameters you will need to have to trigger these systems since we have no idea how the code is written

 

[WR21GCL]

I have a Summit and I am confident that the Forward Collision Warning and Braking do not work or at the very least not as intended. I want to be over warned when set to “Far” and “Med” should be the sweet spot with typical warnings and “Near” should be well near. I have had my GCL since July and have not gotten a warning yet and have come close on two occasions accidentally. I also will randomly try and set it off but get squeamish since I’ll be almost on top of a car and need to brake. Still nothing. That is not how “far” should work. I’d have maybe half a second to react. Jeez, wonder what the “near” setting is for…literally in front of the car that’s in front of me!?

 

[BerettaBri]

This is just the full speed forward braking system I am trying to get going, which is standard on all models, however, I have the Lux/Tech II group in my 21 limited and it lists the Intersection Collision Assist in my build as well.

 

[BerettaBri]

I have a Summit and I am confident that the Forward Collision Warning and Braking do not work or at the very least not as intended. I want to be over warned when set to “Far” and “Med” should be the sweet spot with typical warnings and “Near” should be well near. I have had my GCL since July and have not gotten a warning yet and have come close on two occasions accidentally. I also will randomly try and set it off but get squeamish since I’ll be almost on top of a car and need to brake. Still nothing. That is not how “far” should work. I’d have maybe half a second to react. Jeez, wonder what the “near” setting is for…literally in front of the car that’s in front of me!?

My point exactly.

 

[WR21GCL]

My point exactly.

To make it worse, dealers just hook up their computer and say no issue codes so the system is working fine. They won’t real world test it since they say it’s a system for emergencies. Just like they wouldn’t test setting off your airbag; just check the codes. How do we get someone to listen since dealers don’t and jeep just says take it to your dealer. Might need to make a few tests videos and blast it over social media. Enough views of bad publicity and they always come running to rectify the issue.

 

[Lloydw1]

I purchased the GCL Limited in November. It has 2976 miles on it. Forward collision warning is activated, but its does not work. Has anyone else noticed it?

I assumed that my Limited came standard with forward collision warning. I was sadly mistaken as it is not a standard feature on L's. You might want to verify you have the front sensors before you hit something testing the system as I almost did.

 

[Wlinse]

Does this system work at all speeds or are there conditions to it working?

I put a baby stroller in my driveway and my L just idled right into it lol

If I put the stroller behind the car the jeep will brake though while reversing

 

[Sarge]

Almost nothing has worked related to my Uconnect system for the first two months of ownership (Nav, XM, CarPlay, FM, volume control, memory settings, it changes by the day, too). One of the things I noticed is the light on the dash that shows 'front collision system deactivated'. The radar cruise and steering assist (semi hands free) systems were still working, but the collision system was not working according to the light on the dash. It's not something I use or have ever turned on or off (I mostly can't even get into any of the menus on my Uconnect system). I have about three dozen problems (mostly all electrical) on mine, so I don't know if it's all some core electrical issue, or individual problems with all of these things.

 

[Wlinse]

If the jeep keeps pace behind another car while using the assisted cruise control does that mean the sensor is working?

 

[Sarge]

One would expect so, but apparently not, based on what others are saying. As I mentioned, though, I've had my radar cruise working fine, but the 'forward collision off' warning light was on in my driver cluster. I have never even contemplated turning it off; It did that on its own. For others, it seems they have no warning lights showing, but it still doesn't work, so we have no true certainty of whether the system is protecting us or not. It's like Schroedinger's collision system. It is either active or inactive, but there's no way to know until you crash or don't. 🤦‍♂️

 

[Moj]

I have a 21 GCL limited with Luxury Tech ll group package. The window sticker says it has ParkSense front and rear park-assist with stop, but only have experienced the car break on reverse. Never from the front when parking

 

[Sarge]

Mine has locked up the emergency brake on a few occasions, when stopped, and I didn't know where the release button was and couldn't move the car without cycling the ignition. It shouldn't have applied the brake, and should have released it (seatbelt on, car in park, shift to drive... it should go, especially since I didn't ask it to lock up the brakes in the first place. Really weird.

 

[hamada128]

Mine has locked up the emergency brake on a few occasions, when stopped, and I didn't know where the release button was and couldn't move the car without cycling the ignition. It shouldn't have applied the brake, and should have released it (seatbelt on, car in park, shift to drive... it should go, especially since I didn't ask it to lock up the brakes in the first place. Really weird.

There is an option on the Uconnect to disable Auto Parking brakes.

 

[Sarge]

One of the brief moments my Uconnect wasn’t having a seizure, I was able to disable it. Trouble is my Uconnect system frequently forgets settings and seems to make up its own.

 

[TampaHoosier]

Just thought I'd chime in. I had a 2017 Honda According Touring and my wife had a 2018 Ford Explorer. Both vehicles had the full blown lane management, safety braking etc. Both worked great! They would flash red on the dash, beep loud, and on occasion brake the vehicle. In both cars, we have both sworn that it truly did save each of us from rear ending someone. Whether we were the ones tailgating in traffic or someone cut us off neither of us ever felt the systems performed erratically and acted as they should have.

I now have a 2021 Gladiator Rubicon Diesel fully loaded, before that I had a 2020 Gladiator Rubicon fully loaded. My wife has a 2022 GCL Summit. Both SUCK when it comes to the braking! She has yet to see any messages, alerts or stops on hers and I have only had it beep/flash only once (no auto braking). There have already been scenarios in both of our vehicles where it has been too close for comfort and the cars didn't even beep/flash even once and we felt it would have easily at least beeped/flashed in our previous vehicles. We have both been extremely unhappy and neither of us has any confidence in those systems. I have considered doing a STAR case on this for this exact reason. I want it documented.

 

[hamada128]

One of the brief moments my Uconnect wasn’t having a seizure, I was able to disable it. Trouble is my Uconnect system frequently forgets settings and seems to make up its own.

Happens to mine too, every time my wife chooses her profile it resets the HOME screen settings on my profile when I drive the car after her.

 

[hamada128]

I am 100% sure now that the front pedestrian detection and auto braking doesn't work as it should. My wife had a near miss today while making a left turn due to the blind spot from the A pillar and almost hit a pedestrian crossing the road. Jeep didn't even beep or apply any braking power but thank god my wife was able to stop on time.
@JeepCares, any input?

 

[BerettaBri]

I am 100% sure now that the front pedestrian detection and auto braking doesn't work as it should. My wife had a near miss today while making a left turn due to the blind spot from the A pillar and almost hit a pedestrian crossing the road. Jeep didn't even beep or apply any braking power but thank god my wife was able to stop on time.
@JeepCares, any input?

I tried the advice of someone who suggested I try covering the sensor that is behind the bumper with aluminum foil to see if the sensor itself gives a message that it is blocked - lo and behold, I taped foil over the square where the sensor sits and started the car and a message on my instrument cluster stated "Forward Collision not available due to blocked sensor." So the sensor knew something was blocking it. Yet it will not work when in a close-call situation. I just don't get it.

 

[Wlinse]

I tried the advice of someone who suggested I try covering the sensor that is behind the bumper with aluminum foil to see if the sensor itself gives a message that it is blocked - lo and behold, I taped foil over the square where the sensor sits and started the car and a message on my instrument cluster stated "Forward Collision not available due to blocked sensor." So the sensor knew something was blocking it. Yet it will not work when in a close-call situation. I just don't get it.

The sensors arent an end all and be all solution. A set of conditions still has to be met and calculated in time for an action to be taken. Input = output.

I'm not saying that in a good or bad sense - thats just how these systems work from an engineering standpoint.

 

[JeepCares]

I am 100% sure now that the front pedestrian detection and auto braking doesn't work as it should. My wife had a near miss today while making a left turn due to the blind spot from the A pillar and almost hit a pedestrian crossing the road. Jeep didn't even beep or apply any braking power but thank god my wife was able to stop on time.
@JeepCares, any input?

Thanks for the tag. Have you brought this to the attention of your preferred dealer yet? If not, we would suggest doing so. Feel free to send us a private message if you need to discuss further.

Kate
Jeep Cares