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Automatic Emergency Braking Temporarily Disabled?

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69K views 44 replies 25 participants last post by  tzbrmb  
#1 ·
Hi folks,

New member here. Just got my 2017 SFS 2.0T Ultimate AWD in July and so far loving it. I have just about 8000 miles on it and last week started noticing something strange. Two random times I got a warning along with a little icon on the right of the dash saying that "Automatic Emergency Braking Temporarily Disabled." The first time it happened the icon warning turned off the next time I came to a complete stop a couple minutes later. Weather was 40s and sunny

This morning it came on 40 miles into my commute and didn't turn off the last 15 miles. It was below freezing and snowing. So I'll know more about what happens when I leave work, but it is kind of concerning to me. Is this one of those ghost in the machines that plague these systems or am I in need of service? I'm going in for scheduled service this weekend, I was just wondering your initial thoughts or if you have had this happen to you?

Thanks
 
#2 ·
I do not have Hyundai info readily available. I can tell you that with GM systems bad weather can disable the system if the cameras cannot see due to the weather. The radar portion of the system (If radar based) can also be disabled if road dirt / enough snow has built up on the sheet metal.

From a GM vehicle owner's manual as it related to forward automatic braking. Please also note the comments about undesired emergency braking. I know that Hyundai owner's manuals are ridiculously thick, but I think the answer to your question resides there.....


FAB may not:
•Detect a vehicle ahead on winding or hilly roads.
•Detect all vehicles, especially vehicles with a trailer, tractors, muddy vehicles, etc.
•Detect a vehicle when weather limits visibility, such as in fog, rain, or snow.
•Detect a vehicle ahead if it is partially blocked by pedestrians or other objects.
Complete attention is always required while driving, and you should be ready to take action and apply the brakes and/or steer the vehicle to avoid crashes.
FAB may slow the vehicle to a complete stop to try to avoid a potential crash. If this happens, FAB may engage the Electric Parking Brake (EPB) to hold the vehicle at a stop. Release EPB or firmly press the accelerator pedal.

Warning: FAB may automatically brake the vehicle suddenly in situations where it is unexpected and undesired. It could respond to a turning vehicle ahead, guardrails, signs, and other non-moving objects. To override FAB, firmly press the accelerator pedal, if it is safe to do so.
 
#3 ·
The relevant information is on p. 5-61 of the SFS manual.

"When the sensor cover or the sensor lens is obscured by foreign substances, such as snow or rain, the AEB operation may temporarily stop working. In this case, a warning message will appear to notify the driver. This is not a malfunction with the AEB. To operate the AEB again, remove the foreign substances."

The system uses the front radar sensor located on the center of the bumper.
 
#6 ·
Advres:

No reason to feel that way. I have been in the automotive profession for over 35 years and I'd have had to go to the owner's manual or shop manual as well. Just about every manufacturer has made their vehicle a technological nightmare for owners. If you are tech savvy you'll love it and understand it. My wife still cannot work the remote for the cable box properly.

It is impossible to keep up with everything and the marketing side of the manufacturers make it sound like the vehicle can and will do everything for you under every circumstance and all without you spending a dime to maintain it.....

Feel free to ask away. Questions like that are welcome and good for everyone. I've learned a lot from being here.
 
#31 ·
Advres:

No reason to feel that way. I have been in the automotive profession for over 35 years and I'd have had to go to the owner's manual or shop manual as well. Just about every manufacturer has made their vehicle a technological nightmare for owners. If you are tech savvy you'll love it and understand it. My wife still cannot work the remote for the cable box properly.

It is impossible to keep up with everything and the marketing side of the manufacturers make it sound like the vehicle can and will do everything for you under every circumstance and all without you spending a dime to maintain it.....

Feel free to ask away. Questions like that are welcome and good for everyone. I've learned a lot from being here.
So, similar to this post (but almost exactly opposite.. hah), my sensor has been randomly disabling lately. Now I’m thinking it’s because we need to clean the sensor. No biggie. However, today while I was in a drive thru line, the emergency braking system was enabled. I have no idea why, and it was JARRING. Like the car stopped immediately, and the light came on that it had been enabled. This has never happened before, and now I’m super paranoid. I know I can disable the sensor everytime I get it the car, but is this necessary? Anyone heard of this happening? Should I be concerned? Thanks!
 
#7 ·
Well, now I understand *why* it happened, but it doesn't change the fact that it's absurd that the AEB would stop working at the worst possible time! When the light came on, I was in the far left passing lane of the Interstate, doing about 40 mph in horribly slippery road conditions, along with several hundred of my closest friends. In other words, there was no way I could easily pull over and clean off the sensor. Everyone was staying in their lanes, no one was daring to change lanes because the messy slush between us could send you into a fishtail and likely rear-ending accident.

So what am I supposed to do when the so-called safety feature decides to just stop helping to protect my safety?
 
#9 ·
So what am I supposed to do when the so-called safety feature decides to just stop helping to protect my safety?
Do what people have been doing in cars for a hundred years... put your cell phone down, watch the road, and move your foot to the brake pedal in case of emergency. It's the pedal on the left.

Millennials...
 
#12 ·
Whoa...

At first I was going to say thanks for the millennial comment in one of your comments (I *wish* I were in that age group), but then the animosity and scorn started pouring out....

Yes, I know that my regular brakes still work.
Yes, I know to keep driving like a human being.
Yes, I know where my brake pedal is located.
Yes, I know not to use my cell phone while on the highway.

And I also know that when all of the traffic around you is moving at 40 mph, that driving much slower than everyone else is just as risky as driving much faster than everyone else. (Remember those "defensive driving" classes? They're especially helpful in New England, where there are so many OFfensive drivers.)

In other words, I understand how to drive, especially in tough conditions. However, when I bought my car, I was willing to pay extra for these safety features because I know that lots of OTHER people *don't* know how to drive at those times, so I'll take any extra margin I can get to protect myself from *them*. These systems are great in that they can anticipate even before the most skilled driver does that a dangerous situation is evolving in front of them, and the car can start the braking process - hey, every millisecond counts! If someone in front of me decides to hit their own brakes too hard, or starts to fishtail and spin, and the AEB kicks in, I'm grateful that my car has this feature.

Perhaps my use of the phrase "So what am I supposed to do" was ill-advised. It had been just minutes after that AEB warning had popped up on my instrument panel while driving to work, when I got to my desk and urgently looked up what the heck that message meant (I'd just bought the car in June, so this was the first time hitting such conditions, and my last car was built when the concept of ABS was novel). And mind you, I'd called my dealer's service department, and none of the service advisors knew what it meant either, which didn’t exactly inspire confidence. So when I wrote my post, I was both flustered from having just gotten a rather alarming message on my new car, and frustrated that my car dealer didn't seem to understand my car's features much better than I did.

I know you can't stop the snow and muck from getting on the camera, but my point was just that it was an unfortunate circumstance that a safety feature could be so easily disabled during conditions when it would be especially useful.

All that said, I know you’ve all been on the forum for a long time, and have been around the block a few times. But so have I. It probably wouldn’t take too much effort to dial it back a bit on the disdain and sarcasm when responding to posts, and to try to give other users the benefit of the doubt that they do in fact have more than a few brain cells between their ears. Greysave was the only one of all respondents to my post who commented with humor and grace, an attitude with which we all prefer to be treated. Thanks.





Do what people have been doing in cars for a hundred years... put your cell phone down, watch the road, and move your foot to the brake pedal in case of emergency. It's the pedal on the left.

Millennials...
And if the roads were horribly slippery, you have no business driving 40 mph.
LOL. The prior two posts have it right. Drive your car like you normally would and don't worry about it. These added safety tools are just that....Added safety tools. They "may" help in an emergency situation but should never be depended upon to work. Think of them as an additional safety net that may help under the proper conditions.

Some drivers are reacting to these systems very much like some did to the first ABS equipped vehicles. Expectations are set way too high. By that I mean that the first people driving ABS equipped vehicles expected them to stop quicker, keep their vehicles on the road at all times when braking, etc....Even if they were on sheet ice and their tires were bald. And no, I am not exaggerating by much.

I do blame the manufacturers for marketing policies that sell these systems without explaining the limitations.
 
#11 ·
LOL. The prior two posts have it right. Drive your car like you normally would and don't worry about it. These added safety tools are just that....Added safety tools. They "may" help in an emergency situation but should never be depended upon to work. Think of them as an additional safety net that may help under the proper conditions.

Some drivers are reacting to these systems very much like some did to the first ABS equipped vehicles. Expectations are set way too high. By that I mean that the first people driving ABS equipped vehicles expected them to stop quicker, keep their vehicles on the road at all times when braking, etc....Even if they were on sheet ice and their tires were bald. And no, I am not exaggerating by much.

I do blame the manufacturers for marketing policies that sell these systems without explaining the limitations.
 
#18 ·
This may help!!!!



OK, so for those of you who may run into this. I have been having the same problem for a while. As with the user who reported this problem I too have had a history with this issue. And as also mentioned by him in his last POST - I too have ran into dealer service "not knowing" anything about this - which if I may say it's totally ridiculous cause you'd think they be trained since they claim "they are certified" and your "best choice to service your car". OK - All that said -

For months my car kept coming up with the icons and warnings described above. Blue Link was not reporting any problems. It may be said that perhaps I had a bad sensor in the end, because my car was doing more than just turning "OFF" the Emergency Braking System, but it was the lack of expertise and knowledge from NOT ONLY my dealer's service department, but Hyundai Engineers that was concerning and alarming. I too love my SFS Ultimate 2.0 and I too paid the extra 1200.00 for that "Tech Package" because it was highly recommended as a safety feature while I was doing my research. At this point I'm not sure if I regret it! But albeit it is there and I am "maybe" learning to live with it.

TO GO ON - When I experienced the problem for the first time, there wasn't any information regarding this on the forums, YouTube, etc. It was just happening and I just kept taking my car back to the dealer for service. The last time they kept it for a month and if it wasn't because they gave me a loaner - i'd say they were doing it to discourage me from coming back. During that time, they work with Hyundai engineers to find the problem and finally they reported that they'd found a sensor which was causing the problem. That said, I've had the car back for a month now and YESTERDAY - Boom! the message popped up on my dash board. I was livid waiting for Monday to contact Hyundai again and this time a lawyer to sue them under the Lemon Law. Then as I thought about the fact that it was snowing I found this thread upon research.

Where am I at? Thankful that I found it - Did I mention I love my SFS? I would hate to have to turn it in. I love the features, it doesn't squeak or rattle like many of the last 5 SUVs and BANs we've owned - So I am going to wait until the snow clears, the roads are clean and clean off my "RADAR" to see if the problem has gone away.

I may post again in a couple of days to let anyone interested the results. But I want to thank those who've contributed to this - cause dealer personnel is useless. (perhaps not their fault if they are not train) but still!
 
#19 ·
Loralee

I am experiencing the same problem. I have been to 2 dealerships thus far; and they "don't know anything about this problem". What the heck am I supposed to do now?
It is also affecting my cruise control. I try to set it; and another notice pops up telling me that the cruise control has been "disabled". I am paying all that money for w-h-a-t-??????
 
#21 ·
Puzzle....You are paying for a driving aid, not something that will ever replace the driver.

Keep in mind folks that if your system is radar based, a parking lot bump that does not damage the bumper can on some models knock the radar array (if applicable) out of alignment rendering the safety systems and active cruise control inoperative.
 
#22 ·
Well this has been interesting but does not resolve the fact that the error message that pops up on the LCD screen is random. I have a 2017 SFS 2.0T Ultimate and the erroneous message has been coming up for a little over a month now. I have cleaned the bumper pad till I'm blue in the face but there's been no change. Each time you stop/start the car, the error comes up at random times while driving regardless of the road or weather conditions. I took the car to the local Dealership who said that there were not error messages in the diagnostics evaluation and therefore there isn't anything wrong. This did nothing for my temperament of course and asked them to tell me what is causing the problem. Answer: We don't know and wanted to charge me for the diagnostics exam which I promptly refused. The whole thing has put a bad taste in my mouth but they have finally agreed to take the issue up with Hyundai. That needed to be their answer in the first place - I'd say!! IMO, there is a faulty sensor or a glitch in the computer program but we'll see what they come up with. I hope some dealership or someone will identify the cause and make it known to the world.
 
#23 ·
Goball.....It does say "disabled" and not "canceled", correct? Second question....Is there anything added on the front of the vehicle? Bully bar or anything at all however small and insignificant it may be? Last question and this is for any Techs here....Can a misaligned radar emitter create an intermittent issue like this or would it shut down every time?
 
#24 ·
Hello, I just found your post about the AEB light coming on....my Son just got his 2017 Santa Fe Sport pre certified having under 10K. The light came on when he did a test drive and it quickly went away so he didn't worry about it. The same day he drove the car home it came on 2-3 times in a 30 min ride home. The next day the dealer picked up the car to bring it to see what the issue was and they claim the light had not come on. When he drove it home needless to say the light came on several times. The car is currently back at the dealer and they keep claiming nothing is coming on while they are driving the car. They are saying they can't change the sensor without a code coming on. Did you ever figure out your situation. He took a picture of the message when it came on and they still say they can't do anything for him. This happen in both bad weather and in nice conditions and yea he cleaned the cameras etc. And just like you he knows how to drive and knows how to use his brakes. Why have a feature if it doesn't work right?....thanking you ahead of time for any insight you can provide. thanks
 
#25 · (Edited)
Mzad.....If it comes on consistently for him he should ask the Dealer if someone can go for a road test with him while HE drives. Please do not take this the wrong way,.....Over the years we have had lights come on because the driver was a two footed driver and was touching the brake pedal just enough to activate a warning light, and others who had "unique" ways of driving that caused issues that were resolved once we saw what the driver was doing. In one case we had an owner complaining about a buzzing sound at times while driving and we found that he was drifting off of the right side of the road and hitting shoulder rumble strips.

I know that just about everyone here is smarter than that and I am not trying to be funny or insulting. It could very easily be that he is doing nothing at all wrong and his style of driving allows for the condition to be duplicated (Aggressive driving, mileage driving, corners differently, etc...) and the person at the Dealership who driving it does not drive it the same way. When in doubt, go for a road test with the owner driving and see what happens.......
 
#26 ·
Hi all
I am from NSW Australia. My i30 keeps saying that your AEB is disabled, Radar is blocked.As others did, I did the same. I cleaned Sensor, Camera on the windscreen, Radar and the Hyundai logo of bumper bar from outside and inside too. This alert again keeps showing. I am sick of it. Hyundai dealer is not taking care of it. Hyundai has to make a recall, sort it out with some permanent solutions. They can’t simply do some test of their inventions amongst drivers without scientifically veryfying it. It looks like most of these models cars have same common issues. It’s so annoying. Hope Hyundai listens to us before it’s too late.
 
#27 ·
Fixed!!!!

Hi to everyone having a problem with the Automatic Emergency Braking Temporarily Disabled notice in their Hyundai vehicles. My dealer (Allen Hyundai, Laguna Niguel, CA) found the problem! It turns out front license plate is just above the braking sensor on the front bumper. It is so close, that if you have a license plate cover that is a teensy bit too big, it will occasionally bounce down and cover the sensor. I had them remove the front license plate cover completely, just leaving the bare plate. I have not had a problem since!!
 
#28 ·
Fixed!!!!

Hi to everyone having a problem with the Automatic Emergency Braking Temporarily Disabled notice in their Hyundai vehicles. My dealer (Allen Hyundai, Laguna Niguel, CA) found the problem! It turns out the front license plate is located just above the braking sensor on the front bumper. It is so close that if you have a license plate cover that is a teensy bit too big, it will occasionally bounce down and cover the sensor. I had them remove the front license plate cover completely, just leaving the bare plate. I have not had a problem since!!
 
#30 ·
 
#36 ·
I still see new posts on this issue!! Has anyone been able to solve this issue?
Taking my 2017 Santa Fe Sport Ultimate to the dealer again this week with the same sensor disabled issue. I have been doing this for 3+ years and still no resolution. I have been there no less than 10 times for this issue. The last thing they did was zip tie the sensor to hold in place 7 months later I am going back for the same issue. They claim they have never heard of this issue. If it's all over the internet then they have heard of it. The initial explanation was I had a front end collision and I was shocked and told him outright that was untrue. 3 years later and still not resolved. If you have this issue, do not take this as an answer or let them tell you there is no code so they can't do anything. It is clearly a design flaw that we all paid to much money for.