Rear brake lines have rusted out causing a safety concern. Mercedes will not extend the warranty to repair the recognized inferior parts as they did for the rear subframe. The rusty rear brake lines are related to the rusted subframe which was repaired under extended warranty by Mercedes at no cost. The same should apply to the rear brake lines. I am currently having the rear brake lines replaced due to this rust and safety issue. Please require Mercedes to extend the warranty and related repair to the rear brake lines as it is systemic to these cars.
2014 Mercedes-Benz E350 brakes complaints
Page 2 of 3: complaints 11 to 40 of 50, newest first, as owners wrote them.
The emergency brake often gets stuck, especially on cold days. I have to repeatedly push and release it or manually adjust it by pushing behind the brake to return it to the release position. This problem starts on 28000 Mile on this car
10/14/21 Was cautioned that the rear brake lines and caliper hoses were very corroded. Mileage 43,185 10/19/22 Cautioned about rear brake lines. Mileage 48,459 12/11/23 Rear brake lines replacement cost $4497. Repair not done at that time. Mileage 53,375. Again cautioned. 10/30/24 service date- Was informed that the rear subframe was corroded and would be replaced by Mercedes-Benz. I have photos from the dealer. There are holes in the rear subframe.The brake lines could be replaced at the same time at a cost of $2820 due to the fact it is in same area. Mileage 58,597 I asked M-B Customer Service to cover the rear brake lines as the under coating was not sufficient to protect the rear subframe and brake lines. They rejected my claim. I was told others have also tried to get M-B to cover this cost and were rejected. My vehicle has very few miles for its age. I have never had to replace rear brake lines in the 40 years I have owned a Mercedes Benz vehicle. I believe that they have not adequately protected the undercarriage from weather. The rear subframe is my evidence. At some point these brake lines could fail. They will be replaced. I want the manufacturer to cover the cost of the brake lines when the rear subframe is replaced. Please advise.
Rear brake line corrosion
2014 Mercedes E350 with 129,000 miles. It was discovered recently that the subframe was rusted, and a hole had formed. The subframe was replaced under extended warranty offered by Mercedes. During the replacement, the dealership discovered that the metal rear brake lines are also rusted.
Brake pedal became "spongy" and then total brake failure with dashboard warnings to check brake fluid. Caused by corroded brake lines that failed and allowed all brake fluid to be lost in the system. Extremely dangerous as no braking was available.
Rear brake lines rusting and corrosion.
Rear subframe snapped under hard braking on the highway and caused my to veer into leftmost lane. It was terrifying and a severe hazard on the highway. Had vehicle towed to my house. I lifted and inspected my car and found the rear subframe was rusted and a crack straight through. The rear brake lines were also severely corroded and are very close to failing. Front brake lines have no corrosion. It seems that the rear subframe and rear brake lines have the same anti rust coating which are clearly not sufficient.
The rear brake lines on my 2014 Benz E350 was blowout while stopping at a traffic light. After inspection, the both rear brake lines were rusted
Rear subframe rusted was covered under an extended warranty (after a lawsuit), but the rear brake lines are also very rusted and not covered by warranty. Rear springs also broken (rusted) and bolts seized.
All of a sudden my brake error lights went on while driving to work. By the time I could stop at a garage on the way my brake fluid was very low and more was added. Had to again add more when I got home just so I could take the car to my repair shop. Independent repair specializing in mercedes identified 4 leaks in rear brake lines. Pictures show that all leaks are at or adjacent to clips attaching to the car. Something is wrong with the design or materials for this to happen consistently in the same car. Mechanic said this isn't expected until cars get at least 100k and shouldn't be consistently in the same connections. The fluid was draining so fast that if someone were driving a longer distance they may not have the ability to refill before brake failure. This is a safety hazard to have so many material failures at the same area of the brake lines.
Suspension Rear Sub-frame rusted through, rear Lower control arm disconnected from rear sub-frame due to rust/corrosion. It is available for inspection. While braking at highway speeds the car fishtailed and I almost lost control of the vehicle. This has not been confirmed or inspected by any service, Insurance or Police entity. No warning lights, messages etc. Brakes: Rear brake lines are severely corroded in the same area as the rear sub-frame. Electrical System: Battery continuously discharges and is dead after 5 hours.
I am losing brake fluid. Likely from rotted brake lines. Was given a quote attached below for repair of rotten brake lines 2 years ago. My friend has the same vehicle (a 2014 model) and had to replace brake lines for the same issue. I've never heard of break lines rotting and leaking on another make of vehicle after only 8 years of use at 70K. The car is always garaged, washed weekly and currently at 91K miles. I believe the coverage of the rear subframe should be extended to the break lines for this model of vehicle since it is a commonly reported problem per the dealer.
Brake line failure , i have a 2014 E350 that the rear brake lines failed , all rusted and corroded , mercedes should extend the warranty on brake lines as they did with the subframe , this is a major safty concern , when you buy a mercedes you expect you are buying a top of the line car not all plastic .
The contact owns a 2014 Mercedes-Benz E350. The contact stated while driving 50-55 MPH and depressing the brake pedal, the brake pedal went down to the floorboard and the vehicle failed to respond as needed, causing a stopping distance delay. The message "Low Brake Fluid" was displayed. The vehicle was taken to an independent mechanic, where it was diagnosed that the rear metal brake tubes were corroded, which caused brake fluid to leak. The mechanic replaced the rear brake tubes. The vehicle was repaired. The dealer and the manufacturer were not notified of the failure. The failure mileage was approximately 59,000. The VIN was not available.
Rear brake lines are rusting out prematurely caused by a defective rear sub frame
RE: VIN# [XXX] I am the owner of the above referenced vehicle, a 2014 E350 4matic sedan, showing 98,000 miles on the odometer. On Friday [XXX] I was alerted by Mercedes Benz of Portsmouth, NH that the rear brake line on my vehicle had ruptured. I asked if I could see the failure, and they were happy to show me. I was dismayed at what I saw and took photos which I have included here. The extensive amount of corrosion was shocking. I also own a 2003 chevy plow truck that was driven on salt covered roads that did not require brake line repair for 18 years. I would not expect brake hardline failure at 9 years for a Mercedes product. Disappointed that my car was not able to be driven, I asked for a price for the repair. It was explained to me that Mercedes could not repair just the area of the failure, but instead had to replace the entire line. I understood this as the line was impaired in other areas as well, and posed a safety issue. The quote for the repair was $3,500.00 dollars. The quote represented approximately one third of the vehicle's value, I opted to have it towed and repaired the failed sections myself. (photos of cutout failed sections enclosed here). The car is now drivable, however the remainder of the hardline is still very corroded in other areas of the vehicle. Because of this I would respectfully ask that Mercedes Benz please correct this ongoing safety issue at their cost. Thank you for your consideration in this matter. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
Was driving the car with my family close to home and the brake light came on. I drove home and noticed break fluid under the car. I took the car to Leober Mercedes in Skokie Il where I purchased the car and where I sometimes had it serviced. They told me my rear brake lining was corroded and it would be close to $4k to repair. I had it repaired but new that had to be a product defect since that just doesn’t happen as part of normal wear and tear and especially not to a car that has 57773 miles and hasn’t been flooded and that was regularly serviced. I’ve also found out that others have had the same issue with their Mercedes.
Driving on a highway approximately 65 MPH. Had to break fairly hard due to unexpected traffic. When breaking, my car fishtailed and I thought I was going to hit the vehicle in front of me. I immediately took my car to my independent, Mercedes-certified repair shop. My mechanic informed me that it was a problem with the rear subframe. I then took it to Mercedes for an inspection. They confirmed that the rear subframe was rusted and needs immediate repair. I was told not to drive the vehicle as it is extremely unsafe. Mercedes is aware of this problem. There was a class action lawsuit filed in February of 2023. Mercedes supposedly informed owners of the potential problem, but I was never notified. I only became aware of this dangerous subframe problem as a result of this incident.
- On 12/28/2023, Car developed a brake fluid in the rear near the differential after sitting, unused, for 3 weeks. - Car is available for inspection. - Brake system operates with diminished capacity. - An appointment has been scheduled with an independant repair center. - The brake warning light illuminated and a brake fluid warning message appears when the vehicle is started.
The subframe corroded causing an unsafe potentially hazardous condition. Also the brake line was were corroded causing imminent brake failure. The rear springs rusted from the corrosion subframe defect..Mercedes required 2800 dollars from me to remedy the problem
The parking brake frequently gets stuck and will not release when prompted even while driving the vehicle. Usually takes several attempts before the parking brake will release and disengage. The vehicle cannot be driven with the parking brake engaged.
Rear brake hard lines are corroded and leaking. Loss of rear brakes and fluid while driving. Rear subframe corrosion is being addressed by recall/warranty extension but this coverage has not been extended to the premature failure of brake lines. The rest of the car is not rusted or corroded, only rear brake lines and recalled rear subframe are rusted and corroded. Attached photos show the condition of brake lines and additional photo shows the rest of the car in a rust free condition.
The contact owns a 2014 Mercedes-Benz E350. The contact stated that the vehicle was taken to an independent mechanic who informed the contact that the brake lines were extremely rusted. The contact related the failure to the federal safety agency Action Number: DP20004. The vehicle was taken to the dealer; however, the vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 126,000.
The contact owns a 2014 Mercedes-Benz E350. The contact stated that the parking brake release failed to release as needed. The failure recurred several times however, the contact could not recall how the parking brake was released. On one occasion AAA released the parking brake however, the contact was unsure how the AAA mechanic was able to release the parking brake. The contact took the vehicle to a certified mechanic who diagnosed the vehicle and determined that the parking brake, and the brake cable had failed to disengage as designed and needed to be replaced. The vehicle was repaired. The manufacturer was made aware of the failure but had not yet responded. The approximate failure mileage was 36,400.
While driving down the road at 60mph, I hit the brakes to slow down. I heard a pop and thunk from the rear of the vehicle. I thought it was some boxes in the back of my car and forgot about it. I then brought my car into the dealer for an engine computer update and during the inspection they found that the passenger rear control arm mount broke away from the sub frame and that the rear brake lines were heavily rusted. They quoted a new rear subframe and brake lines. If I was on the freeway and this happened or I had to take evasive maneuvers I most likely would have crashed. The mechanic told me the weld broke where the control arm mounts to the subframe. He inspected the rest of the vehicle and everything looks good. On a less than 9 year old vehicle the subframe should not have rusted enough to break. Especially on a safety issue like the suspension and brakes. Mercedes should have done a better job with their welds and with their rust proofing especially on safety components.
I brought my car into Mercedes on 9/13/2022 and was told my brake lines and subframe were rusting. It's a 2014 with only 80k miles on it. I was told I had a year before it needed to be replaced/addressed. I brought the car in again on December 12, 2022 and they said on a scale of 1-10 the subframes and brake lines were a 7 and were a safety issue. After doing some research, I am clearly not the only owner of this model dealing with this issue. This is safety issue and should be recalled. Subframes and brake lines should not rust so quickly.
The car lost the brakes as I was driving. This was very sudden and there was no prior sensor indication. Upon inspection, it was discovered that the brake line broke and leaked the brake fluid as I was driving, causing the car to loose braking ability. Inspection of the brake line also showed severe rust in multiple parts of the brake line.
Brake line to rear completely rusted through. Lost brake control while driving. Upon further inspection, the entire rear subframe has significant rust damage that warrants replacement.
This issue is pertaining to a 2014 E350 Mercedes Benz. The brake system is in jeopardy. The subframe has rotted and cracked. Mercedes Benz is aware that this is a problem for many of their vehicles. While the right side of the subframe is rusted and beginning to crack, the left side of the subframe is totally rusted and busted out. The vehicle is routinely brought to the Mercedes Benz dealership for maintenance visits. It was making cracking sound in 2021, we brought it in to be serviced for that reason on 11/23/21. This issue was not noted at that time. Mercedes Benz indicated the solution was a lube. The issue persisted post visit. The car is infrequently driven because the primary driver teleworks. We returned the car to the dealership for an assessment 8/6/2022 due to ongoing concerns for our safety. The first indicator that there was a problem was the unfamiliar cracking sound as if the car could snap in half, then hard pulling to the left when braking. There was never a warning light or any other indicator on the dashboard or otherwise. The owners initiated the visit to the Mercedes Benz dealership. Mercedes Benz reported that they did not see the rust when they assessed the car for the cracking sound in 11/2021, furthermore that the rust and deterioration happens rapidly. Had the right side of the subframe also rusted and rotted out, this could have resulted in a total loss of control over the vehicle and been needlessly catastrophic. Warning indicators necessary and routine free inspection are warranted. Repairs for the subframe alone will cost more than $4000. This is a hardship. Further, it's unclear if the malfunctioning rear left caliper resulted from the rotted subframe. The vehicle appears to be in otherwise pristine condition. Mercedes Benz has never indicated there were any issues with the vehicle's subframe despite routine class service visits at the dealership. An internet search confirms this issue is not uncommon and possibly negligible.
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