12-09-2019, 09:25 PM | #23 | ||||
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These only appeared once I tried to drive the car, and disappeared once I eventually got the brake unstuck. No incline - our garage is completely level, as is the parking lot behind our clinic, which are the two locales where the problem occurred. I do also ride the brakes to dry them when I wash the car, especially since the first episode. I am likely just being paranoid, but I am wondering if there is any possibility of this happening when I am driving the car - I doubt it, but I still haven't ascertained the cause of this problem, either. Thanks, all.
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12-09-2019, 09:44 PM | #24 |
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If I had to spitball a guess, I say there is an electrical malfunction with the wheel speed sensor(s), since all those functions receive data from that particular unit.
If you have access to ISTA-D, you should be able to recover any shadow faults that would confirm it or point you in the right direction. |
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12-09-2019, 09:52 PM | #25 |
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That looks like a pretty serious Christmas tree of errors. Any one of which could be causing the problem. I am shocked the dealer hasn't done anything about this. Those codes would clearly be in the logs.
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12-10-2019, 02:33 AM | #26 |
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It's not a free fix, but you might consider swapping pads and seeing if you can reproduce it. Or at least complain until BMW gives you a new set of pads. Take a video next time if you can, that's some pretty crazy stuff you describe. I've had less trouble moving a car with a partially engaged parking brake.
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12-11-2019, 09:22 PM | #27 |
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Thanks for all of your thoughts, gents.
I will contact me service advisor, and ask them at the very least to read the codes. I'll let you know what I find out. Cheers
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12-12-2019, 09:11 AM | #28 |
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Did the warning lights come on AFTER you drag the wheel?
If so that's normal as the car will see 1 wheel is stationary whilst others are moving and that is illogical so it will assume a wheel sensor fault and disable all function using that sensor. |
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12-12-2019, 09:17 AM | #29 | |
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I thought that was the case. I figure it's simply a case of the pad sticking excessively hard into the rotor, but man, I hope it doesn't happen as badly as the first time. That was terrible. It killed me to drag that tire for that long, riding my clutch that hard!
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12-14-2019, 01:16 PM | #30 | |
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12-14-2019, 06:44 PM | #31 | |
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Wow - it sounds like your brake seized REALLY hard, too. And you're right - my car is still very low mileage, so hopefully, like your car, these episodes will stop happening, with more miles put on. Thanks!!!
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12-15-2019, 11:19 AM | #32 |
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TTBear, check here if you see something interesting for your issue:
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12-15-2019, 11:21 AM | #33 | |
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I am on it. Thank you for taking the time, Artemis!!
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12-15-2019, 12:27 PM | #34 | |
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Pattern: parked in humid conditions + not moved for a couple of days. And:
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12-18-2019, 07:40 AM | #35 |
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I've had a similar issue lately with sticking brakes but not the errors. Pretty cold and snowy lately, so not really able to do hard braking prior to parking. But when I do drive away after being parked overnight (non-heated garage) or outside at work, I get the loud thump sound. Yesterday afternoon the brakes were squeaking loud after pulling out of my parking spot but quit after about 100 feet.
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12-22-2019, 06:45 AM | #36 | ||
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04-29-2020, 10:37 PM | #37 |
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I have a 2015 X6M. This happens every time I put it to bed with wet brakes. Not sometimes, every time. The next day the front pads are stuck to the rotors. This happens whether the E brake was engaged or not.
Being awd may help getting them to release (or unstick from the rotors) but it takes a good bit if throttle to make that happen and it makes a loud pop or bang when they do. It's almost like trying to pull a stump out of the ground. I have plenty of marks on my front rotors from this happening. I have mentioned this to the service department more than once. They have no idea why this happens. |
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05-02-2020, 09:08 PM | #38 |
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In my experience with the M brakes (F8X), if you don't daily drive the car, and it tends to sit for periods of time, the caliper pins dry out, especially if you're washing frequently. Even worse if you are blasting water into the wheels to rinse them during your wash (as I do). This can blast some of the caliper pin grease off.
The pads slide on the pins (2 each side) and they are parallel to the anti-rattle pad clip. My RF caliper began to groan and hang up. I pulled the pads out, greased the pins, and voila - caliper working perfectly. See attached photos Good luck! My guess is this will solve your issue unless it's something w/your electronics also. If you need any help with this, just ask. I've worked on both my M4 and M2 brakes maybe 100 times (pad swapping for track, lubing, etc.). Lots of hours learning this great/simple fixed caliper system |
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05-05-2020, 03:13 PM | #39 | |
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This is really, really good info - thanks!!!
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05-05-2020, 03:19 PM | #40 | |
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05-05-2020, 03:45 PM | #41 | ||
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The X brakes are huge and all that surface area rusts quickly and you have your pad sticking problem |
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05-05-2020, 07:00 PM | #42 |
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Also, this is probably a reason BMW and others are ditching fixed caliper brakes for less desirable floating caliper systems - especially the rear brakes - less maintenance and complexity and, of course, less performance 😢
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05-23-2020, 10:47 PM | #43 | |
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Thanks Gsrbri, I'm definitely going to try greasing the pins. I love working on my cars, and you just gave me a simple project to see if it solves my problem. Taking the vehicle for a drive to dry out the brakes does work, but only if the streets are dry. If it's a snowy or rainy day, and the streets are wet, it's not easy to dry them off. Luckily, in Colorado, we don't get very many wet days. |
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05-24-2020, 06:04 PM | #44 |
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Mine did this two me a few weeks back, may we'll have been after washing the car. In the morning going to work I hear a bang and a slight jolt as the seized brakes have loosened.
So weird it's so extreme on this car. My last car just made a temporary slight graunching sound as normal after the discs had gotten wet and rusted after a wash. |
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