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View Full Version : 2007 Audi Q7 4.2 FSI No brake fluid at the front left line



Joe001
09-09-2021, 08:18 PM
Hey,

I am having an issue, long story short my Q7 would pull to the right when I brake and brake function seemed decreased, after driving I checked all four brake rotors 3 of them where hot/warm and front left one was completely cold. So I got it up in the air, pressed the brake pedal with the engine on and off and the left caliper wouldn't engage at all, I removed the brake pads, moved all 6 caliper cylinders and they are not sticking working as they should. I tried bleeding that front left caliper with absolutely no fluid coming out. Then I disconnected the brake line going to the caliper to find out that there is no fluid coming out when I am depressing the brake pedal. I also disconnected the line before the soft line thinking maybe its a soft line thats causing it, but same story no fluid there either. Vehicle stops and the brake pedal feels normal, just the front left line has no pressure in it. I am stumped and never encountered anything alike, therefore posting this thread with the hopes that someone had the issue I am having or someone with more knowledge to help me. Thanks for reading [:)] p.s. no ABS lights or codes

Joe001
09-10-2021, 11:07 AM
Anyone? I am stuck lol 😕

John_Kaufmann
09-12-2021, 02:35 PM
The hose or line might be crushed.

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Joe001
09-16-2021, 07:16 AM
Hey John thanks for the reply!
Just wanted to update, it was faulty mechanical part of ABS module, one valve was stuck shut. Replaced the mechanical part of ABS module and its back on the road.
Again appreciate the help! Hopefully this helps someone else!