This Hyundai has what we call a cracked exciter ring. The ABS sensor shown at the lower right of the picture reads the square peaks and valleys of the exciter ring as the front drive axle turns and this is how the car determines how fast that particular wheel is traveling. The crack in the ring, shown by the red arrow causes that gap to be wider than the others tricking the ABS computer to think that wheel has suddenly changed speeds so it thinks it need to activate the ABS brakes. Having this happen on dry pavement will cause the car to not stop fast enough and could cause a collision.
To repair the problem, the front suspension is pulled apart, the axle shaft removed and the exciter ring replaced. To do the job properly, the complete shaft should be pulled apart, replace any worn parts, replace the CV joint boots and grease.
This problem is not isolated to just Hyundai and can happen on any make of car fitted with Anti Lock Brakes. At Nelsons Automotive of Pewaukee LLC. we specialize on the diagnosis and repair of simple to complicated brake systems. Give us a call if you are having problems with your ABS brakes, we can help.
I know this is a old thread but I was wondering if this a safety issue or can you keep driving it just being aware of the problem. We just bought a used one. I don’t want to put a lot of money into this used vehicle. Thanks!
I have this issue currently happening with my 2015 Hyundai Accent. how ever the issue diddnt arise until the dealership installed a new engine in my car. ofcourse they say they feel nothing every time they test drive it and avoid fixing it since its their fault. but my questioning is why would it not happen until they changed the motor?
I have a 2003 Hyundai Santa Fe the left calliper Lock’s down I rebuilt the first one that didn’t work so I got a new one or a remanu and it still lock down the brakes pulsating first then lock down
Thank yu very much i also face the same problem with 2012 santa fe and i think i have found the solution.
How much would this costs, mines a 2004 with the same problem
I have 2004 with the same problem and same yesr, not covered under the recsl. I’ve had it in 2 shops for a full diagnostic, in cluding the info on a cracked exciter ring (which logically makes sense). No problem found. This is obviously not a hydraulic system problem and falls into either mechanical, electrical or (most likely) a combination of both. Some “fixes” have worked short term, but none (that I have read about) long term. This fix sea the most logical I have found but it does not provide info about long term success. It seems these vehicles just dissappear and it seems that just may be Hyundai’s plan. Too bsd. Other than this, our vehicle has been relatively trouble free. Hyundai should be ashamed that they are not acknowledging and addressing the problem (and what about the paint/clear coat problem).
JIM?Ideas?
Hello,
this might be related my problem.
My Hyundai Avante (2011 model 1.6) suddenly loses acceleration while my foot is still pressing on the gas pedal.
Every time that happens I have to raise my foot from the gas pedal and press it again to make the car accelerate.
This thing happens randomly, but mostly at speed lower than 80 Km/h
I tested the car on an empty road once; I didn’t raise my foot from the gas pedal this time when the car lost acceleration. The car speed dropped to zero and the RPM gauge returned to idle (i.e. around 1000 RPM).
The “check engine” never light up during or even after this thing occurs.
Here is the list of things the mechanic tried on my car:
1-Cleaned the body throttle
2- Tested the car with another used body throttle
2- Tested the car with another used gas pedal
3-Check the fuel pressure and injection
4- Checked the sparks
5- Tested the car onboard computer.
None of the above worked!!!
Here is the strange thing my mechanic discovered, if he unplugs the cable of the Anti-lock braking system in the car. The problem never occurs.
I have been driving the car for two weeks, with the ABS system unplugged. The loss of acceleration problem never happens.
I’m not sure what the ABS has got to do with the car acceleration.
Please help.
Hello i have a 2007 santa fe my speedo works then stops and my abs light is on and my airbag any ideas is it from the false activation
I have a 2007 santa fe speedo drops in and out and abs and air bag light are on could these be my problem
So do I need to take my tuck in and have them fix the problem with out me paying. I have a 2003 Hyundai sonata 4WD.I will like to hear from you all
hey i have a 2005 santa fe and the abs light kept coming on and the brakes were grabbing so i took out the fuse and the problem stopped. what could be wrong with it so i can get it fixed
This is a great article. My wife’s 2012 Sonata is doing this exact thing. I am glad to be able to tell the dealer what the problem is and that I expect the 100,000 mile warranty to cover it.
This *just* happened in my wife’s car and she couldn’t drive it home. When I tried to and realized it felt like the ABS system tripping erroneously, I popped the ABS1 and ABS2 fuses.
Aside from not having ABS for icy conditions, will driving the vehicle in this state cause further damage before I can get it repaired?
i have similar symptoms on my 2005 santa fe (left front sensor gives error even though it works so abs constantly activates on low speed)
BUT i laso have another symptom (car tends to lean left)
can it be than my axle shaft is destroyed on the left cousing the wheel turn slower ?
or its just two separate symptoms and i need to look into steering column?
( i did wheel tracking so this is not the issue)
thanks
I have a 2005 Sante Fe with this problem. Why did the recall stop in 2004?
I’m not aware of any recalls for this issue. As far as your question goes, you have to remember recalls are generally started by NHTSA. If the part number changed in 2005 even if the new item is still having this issue, then it would not have been included until NHTSA gets a complaint then they will expand the campaign. If you are having what you believe is a safety issue, write them and if many others do this and a recall comes out, they will pay you for any past repairs.
Good article. I had & found the same problem so I knew what I was talking about when I took it to my dealer . My 2005 Santa Fe had 97,200 miles on it & 4 months under its 10 year/100,000 mile original owner powertrain warranty and Hyundai replaced the complete shaft, since it was part of the powertrain. I think they had a recall on all 2003 & 2004 but not 2005’s for this problem.
Would this also cause an engine light sensor error ?
This will only affect the ABS and Traction control systems, not related to the emissions or engine lights.