Brake Fluid Flush

PhilH930 · 09-16-2022, 09:05 PM

Car was in for service, which included brake fluid flush (first time since new delivery).

The brake pedal feels very soft to me now. Not a lot of bite or resistance for first 1/3 to almost half of travel. As a result, it's made the pedal somewhat loud when it travels back up.

Possibly overthinking it, or could this be something like air in the brake system? Not a lot of experience with fluid flushes, but I swear my brakes felt tighter / firmer before.

Chas8283 · 09-17-2022, 06:36 AM

Call the service department.

eelnoraa · 09-26-2022, 11:40 PM

they probably let air into the system.

NateM50i · 09-29-2022, 06:44 PM

Take it back, they left air in the lines.

Belnir · 10-01-2022, 06:42 PM

I also had a brake fluid flush and new rotors/pads at four corners. Pedal felt same as before the flush and part change. Soft. I have the standard grey brakes.
Its my understanding that the car is able to identify when air is in the lines. Also noticed the fronts are producing WAY more dust than the rears, compared to before. Not sure what to make of it.

aus · 10-04-2022, 01:38 AM

Way more dust in the front is normal. If you have new rotors and pads, you should do the bed in procedure- I believe Stoptech has a video on YouTube.
The lack of bedding, could also be an explanation for why the brakes feel soft.
.

09-16-2022, 09:05 PM	#1
PhilH930 Private 47 Rep 89 Posts Drives: 2017 M3 ZCP Join Date: Apr 2017 Location: Atlanta iTrader: (0)	Brake Fluid Flush - Soft Pedal Car was in for service, which included brake fluid flush (first time since new delivery). The brake pedal feels very soft to me now. Not a lot of bite or resistance for first 1/3 to almost half of travel. As a result, it's made the pedal somewhat loud when it travels back up. Possibly overthinking it, or could this be something like air in the brake system? Not a lot of experience with fluid flushes, but I swear my brakes felt tighter / firmer before. __________________ Current: 2020 X5 M50i / AG / Full Black Merino / 742M / Exec / DHP / Driver Assist. Pro / Lux Seat / Acoustic / Shadowline / Heated all / Luggage Returned: 2017 F80 ZCP / Min Grey / Exec / Full Merino / LED
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09-17-2022, 06:36 AM	#2
Chas8283 Lieutenant 353 Rep 443 Posts Drives: BMW X5M Join Date: Sep 2021 Location: NYC iTrader: (0)	Call the service department.
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09-26-2022, 11:40 PM	#3
eelnoraa Brigadier General 2057 Rep 3,702 Posts Drives: G05 X5 Join Date: May 2022 Location: SF Bay Area CA iTrader: (0)	they probably let air into the system. __________________ 2022 G05 B58/PHEV + a few very old BMWs
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09-29-2022, 06:44 PM	#4
NateM50i New Member 43 Rep 29 Posts Drives: 2021 X5 M50i Join Date: Aug 2022 Location: Athens, GA iTrader: (0) Garage List 2021 BMW X5 M50i [10.00]	Take it back, they left air in the lines.
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10-01-2022, 06:42 PM	#5
Belnir Enlisted Member 24 Rep 47 Posts Drives: 2015 F10 M5 - sapphire black Join Date: Jun 2016 Location: Brooklyn, ny iTrader: (0)	I also had a brake fluid flush and new rotors/pads at four corners. Pedal felt same as before the flush and part change. Soft. I have the standard grey brakes. Its my understanding that the car is able to identify when air is in the lines. Also noticed the fronts are producing WAY more dust than the rears, compared to before. Not sure what to make of it.
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10-04-2022, 01:38 AM	#6
aus Major General 893 Rep 9,034 Posts Drives: Odysse Join Date: Jul 2005 Location: Seal Beach, CA iTrader: (10)	Way more dust in the front is normal. If you have new rotors and pads, you should do the bed in procedure- I believe Stoptech has a video on YouTube. The lack of bedding, could also be an explanation for why the brakes feel soft. . __________________ Let me get this straight... You are swapping out parts designed by some of the top engineers in the world because some guys sponsored by a company told you it's "better??" But when you ask the same guy about tracking, "oh no, I have a kid now" or "I just detailed my car." or "i just got new tires."
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