Jump to content

Automatic braking may not be working?

Jerry Lee

By Jerry Lee
in Troubleshooting & Recalls

Recommended Posts

Jerry Lee Enthusiast

Jerry Lee

Posted
Posted

I have, on purpose, closely approached the rear of a couple of cars sitting at red lights and I have never felt my brakes automatically try to stop my 2017 Denali pickup. Is this normal?  I have it turned on and also the settings on the steering wheel set to 3 ))). If my system isn’t working, I need to know it. Anybody know a way to test it?

SS502 Senior Enthusiast

SS502

Posted
Posted

Same issue I have, I don’t trust it one bit to test it. I don’t even get the red light in my windshield, dealer (over the phone) told me it’s because of the leveling kit...I don’t agree but I may be wrong. Oh and my settings are the same as yours 3)))

B R A D Enthusiast

B R A D

Posted
Posted
Same issue I have, I don’t trust it one bit to test it. I don’t even get the red light in my windshield, dealer (over the phone) told me it’s because of the leveling kit...I don’t agree but I may be wrong. Oh and my settings are the same as yours 3)))
It's not because of the leveling kit, my 2016 was leveled and it worked well. My 2018 has applied the brakes once, I was slowly rolling up to someone at a red light and before I applied the brakes it had already started.

Sent from my SM-N960U using Tapatalk

DougFL Enthusiast

DougFL

Posted
Posted

You could always get a couple traffic cones and try it in your driveway or a empty parking lot.  If I get too close to a vehicle my HUD Flashes a Red Crash Banner and the seat vibrates. 

SS502 Senior Enthusiast

SS502

Posted
Posted
9 minutes ago, DougFL said:

You could always get a couple traffic cones and try it in your driveway or a empty parking lot.  If I get too close to a vehicle my HUD Flashes a Red Crash Banner and the seat vibrates. 

Good idea, thought about a plastic trash can that would just bounce away without hurting anything. I know my seat works in lane departures and parking. I’ve seen the red banner ONE time and the seat did vibrate but it seemed almost premature, Ive had people stop or cut me off and when I figured it should work it hasn’t. My windshield and sensors are clean. I have some cones so I’ll give it a shot. Thanks ?

ftwhite Enthusiast

ftwhite

Posted
Posted

The only time I know it works for me is at speed (25+ or something), as it is most active for me on freeways. If there is a exit approaching, and I accelerate up to the car in front of me as I am also taking the exit, I can generally get it to warn me and apply some braking, before it detects I am "switching lanes". I have wondered why it doesn't do this for the stop light or stop and go traffic scenario as well, as that would be just as useful.

Loco-diablo Senior Enthusiast

Loco-diablo

Posted
Posted

When I bought my new Volvo with auto braking, they demonstrated it in the parking lot using a cardboard silhouette of a pedestrian. So some cones or some sort of standing cardboard cutout should allow you to test it. 

SS502 Senior Enthusiast

SS502

Posted
Posted
2 hours ago, Loco-diablo said:

When I bought my new Volvo with auto braking, they demonstrated it in the parking lot using a cardboard silhouette of a pedestrian. So some cones or some sort of standing cardboard cutout should allow you to test it. 

...or that pesky Mother-in-law

Jerry Lee Enthusiast

Jerry Lee

Posted
  • Author
Posted

Thanks guys. Some good ideas. I have some boxes in the shop from Amazon and Walmart and will stack them in the driveway and see what happens. 

2003 SSEi Enthusiast

2003 SSEi

Posted
Posted

On my 2014 I have never gotten it to apply the brakes. I don't know if its my driving style or not, but I have only gotten the red warning and seat vibration when approaching and the vehicle infront applys the brakes.  It seems when the brake lights of the vehicle come on I get the red warning and vibration if I get too close

Brianibew Enthusiast

Brianibew

Posted
Posted
2 hours ago, 2003 SSEi said:

On my 2014 I have never gotten it to apply the brakes. I don't know if its my driving style or not, but I have only gotten the red warning and seat vibration when approaching and the vehicle infront applys the brakes.  It seems when the brake lights of the vehicle come on I get the red warning and vibration if I get too close

The 2014 Silverado is not equipped with autonomous emergency braking...only a haptic seat buzz and a red flashing light /and or beeper.

  • 4 weeks later...
Jerry Lee Enthusiast

Jerry Lee

Posted
  • Author
Posted

I stacked up a lot of Amazon empty boxes in the street and drove over them at 20 mph and nothing beeped, buzzed, or brakes come on. Maybe it has to be metal to work?  My truck is a 2017 4 wheel drive 6.2 Denali if that means anything. My sticker says I have brake assist. 

 

I have the brake assist set at the highest level and also have the screen set to alarm and brake. I want that system to work. I may need it some day. 

 

Is there any other way to check this system to make sure it’s working?

Jerry

SS502 Senior Enthusiast

SS502

Posted
Posted
2 hours ago, Jerry Lee said:

I stacked up a lot of Amazon empty boxes in the street and drove over them at 20 mph and nothing beeped, buzzed, or brakes come on. Maybe it has to be metal to work?  My truck is a 2017 4 wheel drive 6.2 Denali if that means anything. My sticker says I have brake assist. 

 

I have the brake assist set at the highest level and also have the screen set to alarm and brake. I want that system to work. I may need it some day. 

 

Is there any other way to check this system to make sure it’s working?

Jerry

I don’t know Jerry, I have the exact same problem on my 2018 although my LKA and parking sensors seem fine. Do you have a level on yours? I have a 2.25 and the dealer told me over the phone that could cause the problem but I doubt it. Also I get the green car icon when I’m following a car but it rarely ever turns yellow even when I run up on them (tested this with a friend so I wouldn’t get brake checked...literally got within a foot doing 40 mph and nothing at all happened) or they slow down in front of me. I’ve seen the red flashing lights ONE time and there was nothing in front of me. Having dealer check it next oil change.

ftwhite Enthusiast

ftwhite

Posted
Posted

To test it in simulation, my guess is you need to trick the camera into seeing a car, not just boxes. Meaning, probably shape and lights. Parking sensors are radar to any solid object, but lka and brake assist are camera enhanced features with lots of computer processing.

Sent from my SM-G960U using Tapatalk

Jerry Lee Enthusiast

Jerry Lee

Posted
  • Author
Posted

SS502 - let me know what the dealership says about why the brake assist is not working. I really want to know if mine are working. Like you, I’ve tested by nearly rear ending a car on purpose and nothing happened. I do get the orange car on the dash when I get close and only got the red warning when a car came across in front of me one time but I don’t think the brakes came on. But not sure; I was distracted by the beeping!  Smile. 

 

Ftwhite - maybe I can make something that looks more like the rear end of a car but would think the brakes should come on when a motorcycle or maybe even a deer is about to make contact with the front of my pickup?  Maybe my dealer has a way to test it. I will ask at my next visit in February.

Thanks guys

Archived

This topic is now archived and is closed to further replies.

Go to topic listing

  • Latest Articles

  • Posts

    • Atlas
      Some Assembly is Required

      By Atlas · Posted

      The Germans basically didn't make the list. There aren't a lot of shade-tree mechanics who work on them in general. At some point the economic equation of keeping a car alive favors junking it. Anecdote/experience tells me this is the case versus actual bad engines/engineering. Not that there isn't any, but there are definitely notable excellent examples. The 2.0 diesels will go forever and ever if one keeps the car around it running. The 2.0 gas cars eventually wear out their turbos but the block below it is usually still solid as a rock. BMW inline 6's same thing. Mercedes diesels of yesteryear, not uncommon to see 250k out of those engines, easy.     Link to the synopsis of the study: https://www.iseecars.com/longest-lasting-cars-study
    • Atlas
      Some Assembly is Required

      By Atlas · Posted

      0w20 is recommended in the Sequoia. 0w16 in the Highlander Hybrid.   I think you make a compelling case for both the quality and frequency of maintenance but I wouldn't go so far as to plot a linear relationship between longevity and oil weight 😉   The list is interesting and leaves me with some questions. The Silverado 1500 is 12.9% likely while the GMC Sierra 1500 is only 10.8% likely. Arguably, they're the same truck, so other factors must be influencing the outcome.   The Honda Odyssey ranks #12 at 13% likely. Great. Rest assured we'll never stop hearing about the dang thing LOL.   There's a bit of a spread between the 4Runner (32.9%) and Tacoma (25.3%). Both overlap on the same 4.0 for many years although the Tacoma used a 3.5 for the last 10-12ish. I wonder if that's related to use-case or if it's suggesting the 3.5 isn't quite as up to the task, or maybe something else fails mechanically.   Ram at 3.5% overall likely, but the Ram 3500 holds the top spot on the Heavy Duty Models at 39.7%. One might say the Cummins is a ringer and provides an unfair advantage. I don't think it's fair/accurate to pit the GM Fullsize 1500's in a list with HD's which are basically medium-duty wearing a 3500 badge.   The Tahoe and Suburban hold spots #15 and #8, respectively, on the longest lasting SUV's list. What's the difference? One's got a shorter butt, unless they're also counting the 2500/3500 Suburbans in those numbers.   The GMC Canyon gets a 1.4% increase over its twin brother Colorado. Why, because it's prettier?   SO many questions...
    • newdude
      2021 suburban RST - acting up/lights flickering

      By newdude · Posted

      Have the aftermarket system removed an re-test.  Its pretty much the only way to know if there is still an issue that is the truck and not from that.  
    • KARNUT
      Some Assembly is Required

      By KARNUT · Posted

      Yeah they all have break in procedures I completely ignored in the past. During tests drives I would test them out. It seems today they’re sensitive so it’s probably a good idea to follow the procedure. The other would be changing the oil more frequently in the beginning.
    • Homer1959
      Cab retaining water, common problem areas?

      By Homer1959 · Posted

      Thanks for not getting back to share your findings...  🙄

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...