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Discussion Starter #1
Normally I’d hate to make multiple posts within a few hours but this is quite bad. So I’m following my friend and he stops quickly at a light. I press the brakes and very weak brakes. I press them all the way to the floor, the abs goes off and I finally stop( thank God). The brakes will stop the car but the pedal will slowly go right to the floor. I have a month old pads and rotors in the front. I’m thinking it might be the master cylinder but I’m not sure


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That's my guess.
 

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2001 BMW E39 540i Automatic Sedan, 192 K miles
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Your brake fluid may be low -if so, bleed and refill it to the max mark.

Or your master cylinder may be failing.
 

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Low fluid should trigger the warning. There's a level float in the reservoir cap.
 

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Discussion Starter #5 (Edited)
Found the problem:
IMG_2915.jpg
It’s the brake line closest to the engine block
Fluid shoots out every time the break gets pressed.
Luckily I’m in a really good area so I’m going to come back tomorrow morning with a tow truck.


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The leaky brake line hole looks pretty small.

I'd tightly cover that hole with a tape. Then, I would buy a quart of brake fluid (Pentosin dot-4), use to fill up the brake reservoir, and slowly drive the car to the mechanics garage. Stop and refill when necessary.
That is probably cheaper than the cost of a tow truck...
 

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The leaky brake line hole looks pretty small.

I'd tightly cover that hole with a tape. Then, I would buy a quart of brake fluid (Pentosin dot-4), use to fill up the brake reservoir, and slowly drive the car to the mechanics garage. Stop and refill when necessary.
That is probably cheaper than the cost of a tow truck...
No you don't!!! You have a ruptured brake line. Do not gamble with anyone's life by driving it on the road. Please...
 

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Discussion Starter #8
Luckily with liberty Mutual’s roadside assistance that costs 9 dollars a year, a towing is covered for us


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Discussion Starter #9
2 new brake hoses and 100 dollars later... I am back on the road..... for now.


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The leaky brake line hole looks pretty small.

I'd tightly cover that hole with a tape. Then, I would buy a quart of brake fluid (Pentosin dot-4), use to fill up the brake reservoir, and slowly drive the car to the mechanics garage. Stop and refill when necessary.
That is probably cheaper than the cost of a tow truck...
That. Is very bad info.

OT: I take it you had a mechanic do the job? It would need a diagnostic system bleed after a ruptured ABS line.
 

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I replaced my brake lines with the ECSTuning set and like the upgrade.. the ones under the hood do fail..


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2 new brake hoses and 100 dollars later... I am back on the road..... for now.


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So, my question to you is whether you have replaced the other brake hoses on the 4 corners? If this is any indication, the other brake hoses won't be too far behind.
 

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Discussion Starter #14
So, my question to you is whether you have replaced the other brake hoses on the 4 corners? If this is any indication, the other brake hoses won't be too far behind.


My 2 front ones were replaced a few months ago.


Owning a BMW is always interesting
 
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