Thread: BAS ESP Light + Soft Brakes + Weird Sounds
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Old Apr 28, 2015 | 10:10 PM
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IBLUBYU
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From: Sun City West, AZ
Default Re: BAS ESP Light + Soft Brakes + Weird Sounds
Originally Posted by rayth

The brake pedal is also soft.. pumping it firms up the pedal which stays firm while depressed.. but then once I let off and press again, it goes back down farther than it should be.. I did drive the car and all was fine aside from the travel in the pedal (which, admittedly, is disconcerting enough)...
I had a brake pedal issue like this come up. The pedal travel when driving along was seemingly getting worse, and after one pump, the pedal firmed up and felt better. I decided to have the brake fluid flushed, because it looked dark and was probably contaminated, and took it to a local repair shop, who did the job wrong. The color of the fluid should be a light golden yellow. The Brakes had the same problem as before. I took the car to a Mercedes repair shop that works on most high-end vehicles and they found that the previous shop actually never even opened the bleed valves on the front 2 calipers, and just power flushed the rears and assumed the job was done. In fact, the MB mechanic showed me the bleed valves on the fronts, and the absence of any wrench activity on them, and he was concerned that they seemed seized, and was worried that they may need to replace the whole caliper. Which they didn't have to do. After they power flushed the system, more air came out of the fronts, and now brake pedal travel is fine. On a side note, I ripped a new one for the previous shop....... Just saying, your problem with the brakes is probably air that needs to be flushed. Sorry, can't help you with the Gurgling.
 
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