Table 1 shows one common service brakes related problems of the 2014 Mercedes Benz CLS550.
| Problem Category | Number of Problems |
|---|---|
| Service Brakes problems |
After the mercedes dealer replaced the corroded rear sub frame under the 20 year extended warranty, my brake line failed so I took it back & found out that the brake lines were corroded. I paid nothing for the subframe since it was under the warranty but I ended up paying $4114 to replace the corroded brake lines. The dealer should have checked for corrosion while the subframe was out of the car, especially since this is a known issue. The parts were only $380 and $3800+ was labor. My brakes completely failed while driving on christmas eve. I took the car to the dealership on 12/26/25 and they told me that the car was unsafe to drive & I had to leave it. This should be covered by mercedes under the rest subframe warranty since from what I’ve read, is a related issue. This was extremely dangerous. I was scheduled to travel back to NY, almost 300 miles from va, where I got the car fixed. The dealership did not do their due diligence when the rear subframe was replaced so they had to drop the subframe to fix the brake lines, resulting in the huge labor charge. I got the upgraded nickel lines to avoid corrosion in the future but this is definitely a safety hazard that could have put me and my family in complete danger, had I not gone out on christmas eve to grab something from the store. I am looking for reimbursement from the dealership and/or mb for the extra hours of labor that they charged me. This brake issue is very concerning and was extremely scary. My brake went all the way to the floor, all the lights came on and this happened without any type of prior warning. Something needs to be done to make sure that the brake line repair is also done at the same time that the rear subframe is done. Also, after the brake line was repaired, I had an issue with the brakes. I did not have this issue prior to the brake line replacement & now they are asking me to pay $1300 for front brakes & rotors. I had no issues with my brakes at all, nor did any sensors go off.