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View Full Version : Brake fluid leak!



gtsingh91
03-31-2018, 07:59 AM
Iíve been fighting a slight brake fluid leak for the last year and a half and it has seemed to gotten worse now. It all started with the 3 beeps and the brake light flashing so Iíd add a little bit every 4-5 months. Then it randomly stopped for about 9 months and it seems like itís back again. I had an Audi mechanic (who works at an Audi dealership and does side work) try to find the leak last year and he pressure tested it and could not find any drop in pressure. Now that the leak is back, I see that the lines going to the rear driver caliper are wet. How are these lines replaced?
https://www.flickr.com/photos/152488175@N08/40241731255/
https://www.flickr.com/gp/152488175@N08/L11u67
If my photo doesnít work, hereís the link: https://www.flickr.com/photos/152488175@N08/40241731255/

gtsingh91
04-02-2018, 01:54 PM
Anyone?

seanf86
04-02-2018, 06:10 PM
Look above that, I bet its leaking out the parking brake shaft on the rear of the caliper dripping on the line, I just changed one on my brothers A4 doing the same thing.

gtsingh91
04-07-2018, 03:10 PM
Look above that, I bet its leaking out the parking brake shaft on the rear of the caliper dripping on the line, I just changed one on my brothers A4 doing the same thing.

I think youíre absolutely right. I took a closer look and it looks like thereís a nut that holds that shaft onto the caliper and really tiny in between is a rubber seal it looks like. When pulling up the handbrake, a tiny tiny bubble of fluid comes out every 3-4 pulls and that drips onto the rubber lines. Can you advise what Iíll have to change for that? Hopefully not the whole caliper

seanf86
04-07-2018, 03:19 PM
I think youíre absolutely right. I took a closer look and it looks like thereís a nut that holds that shaft onto the caliper and really tiny in between is a rubber seal it looks like. When pulling up the handbrake, a tiny tiny bubble of fluid comes out every 3-4 pulls and that drips onto the rubber lines. Can you advise what Iíll have to change for that? Hopefully not the whole caliperYou have to rebuild or replace the entire caliper, a reman is probably your best bet unless you mechanically inclined as it's a bit of a job.

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gtsingh91
04-07-2018, 04:35 PM
Yeah Iíll probably just put a reman caliper in. What brands are you guys putting in your B5s? Is anyone is spending $200+ on an OEM one or are the cheaper alternatives holding up okay? This car is a 220k mile highway beater for me so Iím not looking to spend a crazy amount of money on the car.