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I have a 2011 Hyundai Santa Fe. All brakes and rotors were changed in the past 6 months. Everything was fine for months when suddenly, last weekend, the pedal began sinking to the floor after driving for 30 minutes on local roads. It would still stop but I drove slow and left a lot of distance between myself and the car in front of me. I got to my location, stayed for awhile and the brakes were fine all the way back home.
I checked the brake fluid level and it was fine. So, it is obviously intermittent. If there was air in the lines, would this happen? Makes no sense if it suddenly happened and then disappeared. Would a master cylinder do this if it failed, where it is fine one minute, then bad, then fine again? Someone mentioned something about an ABS controller. Any thoughts?
Location: We_tside PNW (Columbia Gorge) / CO / SA TX / Thailand
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Better have this checked pronto! Currently Unsafe to drive!
Possibly Master Cyl. (Pretty important)
Not likely anything to do with ABS (Electronic sensing and individual wheel braking control (caliper modulation) )
Maybe air in the lines, maybe something more. Drive very slowly and cautiously to the nearest mechanic. Be prepared to downshift of activate the parking brake on the way.
Maybe air in the lines, maybe something more. Drive very slowly and cautiously to the nearest mechanic. Be prepared to downshift of activate the parking brake on the way.
Agree with you. More than likely the mechanics didn't bleed all the air.
If I were the OP I would look for traces of brake fluid by the wheels and master cylinder to make sure that there aren't leaks, and then have to car towed to the shop where the work was done 6 months ago.
This is my second car so I do not need to drive it, nor have I since other than for a quick run today. Of course, the brakes were fine. I’ll check for air first. Then the master cylinder. Is that hard to swap out myself?
Maybe air in the lines, maybe something more. Drive very slowly and cautiously to the nearest mechanic. Be prepared to downshift of activate the parking brake on the way.
Much better to have it towed to the mechanic if not fixing it yourself.
This is my second car so I do not need to drive it, nor have I since other than for a quick run today. Of course, the brakes were fine. I’ll check for air first. Then the master cylinder. Is that hard to swap out myself?
You don't seem to know much about the problem or the fix. Take it to a qualified mechanic to diagnose and repair. Your brakes are nothing to fool with when you don't know what you're doing.
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