This is an issue for your dealer to investigate under warranty as you appear to have an electrical gremlin.
Smart Cruise Control Failure, Electronic Parking Brake Failure
I have a random problem with my newish 2020 Plug In. A couple of weeks ago my Electronic Parking Brake (EPB) and Smart Cruise Control (SCC) have started to fail. First it was the EPB, not sure if the SCC wasn't working, I wasn't driving the car at the time it first happened, but as I have driven the car for the last 2 weeks, and today Sunday 12/27, and last sunday, the SCC failed while I was using it, and the EPB warning light comes on. For some reason, when this happens, I also lose control of the Auto Hold feature. Auto Hold goes orange on the dash.
Has anyone else experience the SCC stop working, or the EPB not engaging properly?
Has anyone else experience the SCC stop working, or the EPB not engaging properly?
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So it seems. Went to dealer once, technician said it was a third party security system add-on that original dealer had put on. I was able to get it removed, but the issue happened again today, one week after it happened last. I'm waking up early and taking it back to my local dealer.This is an issue for your dealer to investigate under warranty as you appear to have an electrical gremlin.
In winter driving in certain snow/sleet conditions I've had SCC fail due to build up on the radar, and AEB (Auto Emergency Brake) will of course fail along with it within the next half minute. It clears itself after a warm up in the garage or a change in weather conditions. Was it maybe that and you thought it was EPB?
Of course that wouldn't explain Auto Hold not working, hmm... Best I can come up with; hope the dealer gets it sorted for you quickly.
Of course that wouldn't explain Auto Hold not working, hmm... Best I can come up with; hope the dealer gets it sorted for you quickly.
Was there a resolution after going to the dealer a second time? I have the same issue.So it seems. Went to dealer once, technician said it was a third party security system add-on that original dealer had put on. I was able to get it removed, but the issue happened again today, one week after it happened last. I'm waking up early and taking it back to my local dealer.
I had put a small gash in a tire sidewall and thus needed to have my car towed to a nearby dealer a couple weeks ago to have the tire replaced. Now, every 3-5 times I start the car, the "EPB" and "AUTO HOLD" amber lights are on, and when these are on, I cannot use (smart) cruise control; I'm still trying to figure out if the car drives differently (I don't think it does?).
Additional information that I think may be useful: when the tow truck arrived, I drove the car onto the tow truck, set the parking brake, and gave the keys to the tow truck driver to have him drop off the car. It is possible he didn't release the parking brake when taking my car off the tow truck. Could this have triggered something in the AUTO HOLD and EPB system? I called the dealer today to schedule an appointment to have this looked at, and I let the service office know it only started after I picked up the car from the dealer a couple weeks ago.
I have encountered this error approximately 15 times in the past 30 days with my 2020 ioniq plugin. It usually occurs within 5 minutes of starting and a power off/on cycle corrects the error.
I have an appointment with my dealer September 13, ill post an update after my service visit.
I have an appointment with my dealer September 13, ill post an update after my service visit.
My dealership was unable to provide a explanation for the EPB and autohold errors on my initial service visit because they were unable to reproduce the error and no codes were stored.
24 hours later the error lights came on and I was only a mile from the dealership. They took my Ioniq plugin in immediately and diagnosed the errors were due to a faulty left rear EPB caliper motor assembly.
The parts on back order, ill let you know the outcome in a week or two.
24 hours later the error lights came on and I was only a mile from the dealership. They took my Ioniq plugin in immediately and diagnosed the errors were due to a faulty left rear EPB caliper motor assembly.
The parts on back order, ill let you know the outcome in a week or two.
The replacement left rear EPB caliper motor drive unit solved my EPB, auto hold and cruise issue. I measured the resistance of the new motor (approximately 2 ohms).
At the current time it looks like you have to purchase the expensive entire caliper assembly if your out of warranty, hopefully just the motor drive unit becomes available independently as Hyundai increases the use of caliper mounted EPBs
At the current time it looks like you have to purchase the expensive entire caliper assembly if your out of warranty, hopefully just the motor drive unit becomes available independently as Hyundai increases the use of caliper mounted EPBs
Did you get your issue resolved?So it seems. Went to dealer once, technician said it was a third party security system add-on that original dealer had put on. I was able to get it removed, but the issue happened again today, one week after it happened last. I'm waking up early and taking it back to my local dealer.
did this resolve your issue?The replacement left rear EPB caliper motor drive unit solved my EPB, auto hold and cruise issue. I measured the resistance of the new motor (approximately 2 ohms).
At the current time it looks like you have to purchase the expensive entire caliper assembly if your out of warranty, hopefully just the motor drive unit becomes available independently as Hyundai increases the use of caliper mounted EPBs
it happened to mein the snow onceIn winter driving in certain snow/sleet conditions I've had SCC fail due to build up on the radar, and AEB (Auto Emergency Brake) will of course fail along with it within the next half minute. It clears itself after a warm up in the garage or a change in weather conditions. Was it maybe that and you thought it was EPB?
Of course that wouldn't explain Auto Hold not working, hmm... Best I can come up with; hope the dealer gets it sorted for you quickly.
I'm dealing with this. I've had it in and out of the shop since I got it. I have a 2022 Blue. They have redone so much and nothing is helping it. I claimed it as a lemon and I'm trying to figure out if this is a common thing. Has everyone's car been fixed without the issues coming back or is it still having the issues?
I have a 2021 Ioniq PHEV and I am experiencing this issue. I've had it into the dealer once so far, with no stored codes found. I have another appointment in a few weeks. This problem happens almost regularly. For a week it was happening during both my morning and afternoon commutes. After that, it comes back from time to time. There doesn't seem to be a regular pattern that I can tell.
Has anyone else had any luck resolving the issue? Is the replacement of the caliper motor the only likely fix?
Has anyone else had any luck resolving the issue? Is the replacement of the caliper motor the only likely fix?
I have the same issue 2021 Ionic limited Hybrid, the drivers side rear caliper will not engage when the EPB/Auto hold amber lights appear. Dealer has been useless and the lights come on at random times and temperatures.
Just had this happen on my car. Driving on the freeway and SCC clicked off and the EPB warning light came on. Power cycling the car didn't help.
In the garage I listened as my wife enabled the EPB and I hear no sounds at all from the driver's side. Passenger side seems to engage.
Appointment made with the dealer. The earliest date? Dec 27th. Good times.
In the garage I listened as my wife enabled the EPB and I hear no sounds at all from the driver's side. Passenger side seems to engage.
Appointment made with the dealer. The earliest date? Dec 27th. Good times.
I am also having to ssues with this and have had both Calipers replaced, the braking module replaced, the entire car computer replaced, and the wiring harness replaced. The last repair held the light off for about two months and now it is back. Also thinking about going the lemon route. Wondering how that is going for you? Figured I would at least consult an attorney at this point. The stress this has caused is unreal. Mine is a 2022 Ionic Hybrid Limited Definitely didn't expect to have this problem with a brand new car. Been going on since the very first oil change and every time I bring it in I'm without a car for weeks while parts are back ordered. At my wits end with this matter.I'm dealing with this. I've had it in and out of the shop since I got it. I have a 2022 Blue. They have redone so much and nothing is helping it. I claimed it as a lemon and I'm trying to figure out if this is a common thing. Has everyone's car been fixed without the issues coming back or is it still having the issues?
Update on my car: it finally went in to the shop and they diagnosed it as an issue with the... wait for it... driver's rear caliper motor. Shocker. They were able to see plenty of error codes when they scanned the car.
New caliper is on order and should be here Thursday or Friday. All covered under warranty.
New caliper is on order and should be here Thursday or Friday. All covered under warranty.
Well the new caliper worked for 1.5 weeks and the car started to throw EPB errors again. Took it back to the dealer and they said they couldn't find any codes or problems with what they replaced, and suggested I unplug LED lights I have installed in my hatchback as it might be confusing the system. Seems highly unlikely, but I'll unplug them for a while and see if the error comes back.
Update: the car keeps throwing errors. Seems much more common when going over speed bumps or when closing the hatch. Finally got it to happen when I was near the dealer so I took it in and they scanned it while I waited. Same error code: driver caliper malfunction. At that point they assumed an electrical issue.
They've had the car since Monday and I got an update today. They found an electrical issue. One of the wires to the rear driver caliper would test fine with a multimeter but when they wiggled the wiring bundle they could get it to read an out of spec value. New wiring harness is on the way, ETA Friday or Monday.
They've had the car since Monday and I got an update today. They found an electrical issue. One of the wires to the rear driver caliper would test fine with a multimeter but when they wiggled the wiring bundle they could get it to read an out of spec value. New wiring harness is on the way, ETA Friday or Monday.
Got my car back yesterday. They replaced the wiring harness and claim it should be fixed for good now. We'll see...
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