brake failure? - Kia Niro Forum
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post #1 of 17 (permalink) Old 04-03-2017, 02:22 PM Thread Starter
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brake failure?

car is headed back to the dealer for AEB/brake problems.

last night dash indicated AEB not working, no cruise control, eventually leading to NO brakes at all.
this morning, naturally, no warnings on the dash, but called it in anyway.
roadside assistance is taking it to nearest dealer(not where it was purchased, unfortunately) for diagnostics.

car has 4366 miles.

will follow up in this thread when i know more.
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post #2 of 17 (permalink) Old 04-03-2017, 02:59 PM
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When you say no brakes at all... do you mean that you stepped on the brake pedal and nothing happened ?!
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post #3 of 17 (permalink) Old 04-03-2017, 08:14 PM Thread Starter
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yeah, foot to the floor, not a great feeling.

just got off the phone with service - they downloaded a lot of fault codes from the ECU and sent them on to Kia Tech support, so they will be giving me a rental car for a couple days while they sort out why it happened.
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post #4 of 17 (permalink) Old 04-05-2017, 07:30 PM Thread Starter
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update

so a failure of the Integrated Braking module has been indicated, meaning, i'm now waiting for the replacement part to arrive.
i can say that the Hyundai Santa Fe rental i'm driving is pretty nice tho.
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post #5 of 17 (permalink) Old 04-05-2017, 08:39 PM
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Yikes! That's terrifying, especially for a brand-new car...!! Glad they found the problem and fixed it, and that they gave you a rental!
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post #6 of 17 (permalink) Old 04-05-2017, 08:59 PM
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Dad Burn Cars are toooooo complicated these days with all this
Electronic / Computer Controlled stuff.

Great when it works I admit, but seems too many things to go wrong.

Break Failure is a what I would call "Very Dang Serious".

That said, I do rememebr the old days - 1952 Ford Master Cylinder leak failure (but pumping the pedal got me stopped and made it to a repair shop).

Also, 1969 Mercury Marquis (my dream car in 1969) had a master Cylinder leak failure also (pumping the pedal got me home where I replaced it).

At least sometimes you could Pump The Pedal and get some braking (holding the pedal on it would leak to the floor).
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post #7 of 17 (permalink) Old 05-11-2017, 05:36 PM Thread Starter
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UPDATE: 10may2017:

the cruise control, AEB and brake warnings came back on again today.
called customer care and ended up back at roadside assistance.

this is getting to be a scary habit
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post #8 of 17 (permalink) Old 05-11-2017, 11:19 PM
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This is scary -- wonder if many others had such. So far I have not had brake problem.

How would you avoid a wreck when brakes fail completely? Better be thinking about Emergency Brake Pedal use.

That is worse than old days when one master cylinder did all four wheels and started leaking - usually got an indication that had a leak as pedal would slowly go to the floor, but pumping the pedal would give you some braking.
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post #9 of 17 (permalink) Old 05-19-2017, 07:15 PM Thread Starter
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latest update:

seems to be all fixed; the regional senior tech for Kia came by and supervised checking all the connections in the plugs and wires in the affected systems(AEB, cruise control, braking) and they discovered _one_ connector/wire that was not making good contact. some sort of contact enhancer was used and that seems to have resolved the problem. none of the subsystems individually had any fault codes in memory.

the really good news, for all current and prospective owners, is that all my problems are 'in the computer' and therefore accessible to all Kia dealers so if anyone else has weird braking, AEB, CC problems, i have already experienced it and the fix will be quicker for you than me!

SO, handled well by Kia, local dealer service, i was given a loaner rental car, and i got my car back(goodbye ford fiesta!)
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post #10 of 17 (permalink) Old 05-20-2017, 09:29 PM
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OK --- Still scary to think LOOSE BRAKES.

A lousy connection problem (must be 100s or 1000s or 1000000 connections in these cars of today).
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