ABS, Traction Control, Decline Assist light on AGAIN! - Kia Forum
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post #1 of 25 (permalink) Old 03-31-2015, 07:29 PM Thread Starter
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ABS, Traction Control, Decline Assist light on AGAIN!

Hey folks,

While I've been reading many threads discussing my issue, I have yet to find one with a definite solution yet.

My wife's Sorento (2011 EX FWD) has the three mentioned lights pop on whenever they so desire. After start up they wont go out sometimes, driving down the road, varying speeds, hot, cold weather, rain or dry....doesn't seem to matter....just come on whenever. If I shutoff the car, the lights will 90% of the time go away just to come on again later. So, I replace the brake light switch as most suggested. I'm now on my 3rd switch in as many months with the last replacement going only 2 days. Never does the car throw any codes, nor any functions that go through the switch not work when lights are on.

I've talked to the service dept of my local dealer more times than I car to count. All they want me to do is bring it in to scan for codes, and replace the brake switch for the low low price of over $150. When I tell them I let my 7 yr old daughter change the switch in less than 10 minutes, and I've done that 3 times, they still want to replace the switch. What's even better is electrical parts have "No Warranty" so I just keep buying them. At least the switches are only $15 and some change.

Also of note, Dealers are still using the same Part# switch that had the recall done a couple years ago unless you specifically ask for the other Part# switch when buying.

Okay, off my soap-box rant.

I've seen some state they have changed an ABS sensor, but my question is.....which one if the computer flags no codes?

Very frustrating especially since my wife is the primary driver and it's happening more frequently.

Did I miss anything? I guess I can replace all ABS sensors one at a time if they aren't too expensive, but I haven't prices them yet.

Thanks for letting me rant.

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post #2 of 25 (permalink) Old 04-01-2015, 04:24 AM
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I have a 2012 LX. Had what sounds like the same problem. Took it to the dealer and they replaced a rear wheel speed sensor. Never had the problem again. Hope this helps....
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post #3 of 25 (permalink) Old 04-05-2015, 02:56 PM Thread Starter
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I think I came across your thread for the issue at some point. Can you tell me what the dealer charged you and if you still have the paperwork, what the part price was itself?

Thanks
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post #4 of 25 (permalink) Old 04-05-2015, 09:43 PM
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They aren't too hard to do yourself - I did them on my wife's old Accord 3 or 4 years ago. You're looking at around $100/wheel for the sensors - so $400 DIY, or probably $800 Dealership, to replace all 4 at once.

You can find them on places like Rock Auto - just look up 2011 Sorento ABS Sensor and you'll find them listed for each wheel (they are all different).

Your trouble lights seem to indicate one of them is intermittent - that's why you can't find the code. If you have one of the advanced ODBII / USB adapters you could hook it up to a laptop and run ScanTool or similar on the laptop while driving, it'll constantly talk to the ODBII system. If you're lucky you can catch the incident of the sensor causing the trouble lights as it's happening and find out what wheel it is from the code on the bus, saving you from replacing all the other sensors.
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post #5 of 25 (permalink) Old 04-06-2015, 04:29 AM
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The invoice says codes C1611, C1612, C1211, and C1209. Replaced faulty right rear wheel speed sensor. P/N 52750-2B100 Hub Assy-RR wheel. All work done at no charge, billed to warranty.
Hope this helps
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post #6 of 25 (permalink) Old 04-08-2015, 04:07 PM Thread Starter
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Thanks for the extra info guys. Of course the dealer says that I can't buy just the sensor. He said the sensor is built into the hub and the hub assy must be replaced for the low low price of Front Hub: $262.67 & Rear Hub: $375.60 That is just the part price, not including labor cost. When I asked him "then why I am looking at the speed sensor assy's online that can be bought by them self," he didn't have an answer.

I do just about all my own maintenance, so will dig into it a bit further before buying anything. Rock Auto was my first place to look because it is.....well...........AWESOME!!!!

More to come when I can get to it again.
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post #7 of 25 (permalink) Old 04-28-2015, 04:13 PM Thread Starter
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Update.....finally had a chance to troubleshoot further

Finally got a chance to dig into this thing..........Since my vehicle was never flagging any codes, I ohmed through all 4 ABS sensors at their connections. Both front sensors were equal (approx. 650 ohms). I went to the rear sensors, disconnected the plug. I ohmed through both rear sensors (approx. 1450 ohms on the right & only 250 on the left rear).

The dealer will only replace the entire hub assy because the rear sensor is part of the hub assy (so they say). I have ordered the rear ABS sensor from Rock Auto for about $85 shipped. I should have it in the next few days and will tackle replacement this weekend. I refuse to believe the entire hub assy has to be replaced every time an ABS sensor goes bad. Why in the world would parts suppliers sell just the sensor?

I will certainly update you when I get the part and work it.

FYI,

My dealer also told me the front sensor is built into the hub assy and they only sell the hub assy and not just the sensor. Funny, once I got to troubleshooting, I found that the front sensor is a 3' wire harness with a disconnect plug in the fender well (behind the plastic) and the ABS sensor end is held into the front hub by only 1 10mm bolt. If I had to replace the front sensor, it would take me longer to remove the tire than replace the sensor.......I am so glad I have the mechanical skills to do 99% of my own maintenance.

Part shipped yesterday, so I should have an update by end of the weekend. Since it's my wife's daily driver, I'll have to wait until the weekend to work it.

Last edited by raenglehart; 05-01-2015 at 07:25 PM. Reason: Fix Typo's
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post #8 of 25 (permalink) Old 04-28-2015, 10:18 PM
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Looking forward to your update. I've replaced ABS sensors on a 2000BMW 328CI, a 2001 Accord, and a '99 Silverado. They were all held in by one bolt and had a quick connect plug. I looked at the ones on my '11 Sorento because of this thread when I was swapping my winter tires for summers and it looks like they are all about the same on all 4 wheels. The worse thing that might happen is if the sensor is siezed into the housing due to road grime, corrosion, etc - you may have to destroy the old sensor to get it out, and then clean the mounting hole in the hub (which might require full disassembly of the hub - probably more work than you want to get into, but probably why Kia forces the dealers to replace the whole thing at once as a unit).
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post #9 of 25 (permalink) Old 04-29-2015, 06:05 AM Thread Starter
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The fronts are just like you say....1 single 10mm bolt and a disconnect plug. I was able to remove them to inspect, clean, etc. Literally took longer to jack the vehicle up and remove the tire than if I had to replace the sensor. The back one is a solid ring that I assume goes around the axle and the hub just has to be removed in order to replace (have a look at Rock Auto for a pic). Still doesn't appear to be too difficult. I'll take and post pics once I get into the process this weekend.
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post #10 of 25 (permalink) Old 04-29-2015, 05:32 PM Thread Starter
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Well crap-o-la. I got the part in today. Just for S-n-G's I ohmed it and it read 650 ohms which confirms my Left Rear is bad @ 250. However, when I looked at the connector, it is oval shaped. My 2WD model is more recatangle, so it won't connect. I got back on Rock Auto to look at pictures and sure enough, all pics show a rounded connector. However, the package mine came in was clearly marked for 4WD models. I contacted Rock Auto and they in turn contacted their vendor (Auto 7 in this case). Unfortunately, the vendor was already closed for the day, so I am a awaiting their call back with an update tomorrow. My Sorento is fully factory with no mods. So far, checking other sites like eBay and looking at pictures, everything shown is a rounded connector at the hub. eBay looks like all the sellers use the same stock photo though. Various part websites searched.....some list the sensor for "All models, while others list separate sensors depending on either AWD or FWD....wth?!?! Dealer confirmed it is a different part number for FWD and AWD models.

Still researching.............................
You'll know more when I do....stay tuned!

Last edited by raenglehart; 04-29-2015 at 05:52 PM. Reason: Typo's
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