2012 Mercedes-Benz C250: sudden loss of power

Filed Jan 27, 2025 · Brakes, Steering · CA

Lost of drive power and the vehicle steering wheel locked on my mercedes from a damaged malfunctioning steering lock actuator module due to mechanical issues within the steering column such as bad steering wheel assembly, faulty steering lock module or issue with the wiring or other electrical components and the mercedes dealer is the only one who solves this issue no other mechanic in general. My safety was at risk due to I lost power and lost of front brakes due to bad sway bar assembly or components could of caused and accident when this happened on November 12, 2024 the problem dealership found during vehicle inspection was code 25464 they told me recommend to replace electric lock module and repair estimate was $2,829.78 and before I approved the the amount I told Mr Ivan Velasco service advisor that after they replace the module that if my vehicle was going to be working again and that if I was just going to make 1 payment of $2,829.78 then I would approved it so I did. Weeks later I got an email asking for more money they wanted another payment for $600 saying it needed a sensor that has something to do with the transmission because after replacing the new module the vehicle did not start up there was no type of communications nothing at all and I responded that I was not going to pay $600 more just cause they don't know what their doing because they promise me the car was going to work after they replace the module now that it did not want to crank up they found another issue that's their fault on not doing there job the right way and for telling lies yes their was flashing blue or red icon on my dashboard that look like a car and a lock would go on and off and it displayed a message saying The theft protection is activated. I want to know if I can get this issue approved and to be considered a recall can you please help I'm so frustrating and mad that they want more money when it's already so expensive please help I would of appreciate it thank you.

Filed Jun 8, 2022 · Engine · TX

Auto is less than 100k miles excellent condition had the turbo gasket go bad on the auto. Oil leaking in the main engine compartment and on ground due to the gasket issue. Could cause damage to engine and turbo. Gasket should not have gone bad. While at the mechanics same issue with the same exact model of mercedes, not sure the year but identical body style. Repairs were completed on 06/07/22 cost through mechanic $465.00 any time due to passing or excelartion the engine would miss out and lose power for the passing or escelartion.

Filed Jan 20, 2022 · Acceleration, Fuel system · FL

2012 C250 has a known defect with high pressure fuel pump. I personally have had an intermittent issue where vehicle will unpredictably stop working under heavy throttle and enter limp mode as the computer throws a fault code. This results in loss of power after the code making vehicle unpredictable and dangerous in passing situations. It leaves you stranded in the passing lane with oncoming traffic with a vehicle that will not accelerate. I have submitted a request multiple times with Mercedes benz corporate who has declined my submission. This issue has been ongoing since 2016. They have offered an extended warranty on the vehicle 10 years and 120,000 miles as they know there is a defect. It is dangerous and needs to be covered for all of the affected vehicles.

Filed Nov 13, 2021 · Acceleration, Engine · CA

When accelerating to pass a vehicle the check engine light comes on and there is loss power. When this happens there is a huge potential of a crash. The car has to be shut off to try and reset this. When you are on the frwy this puts life at danger. The code is a p002 and if you research it Mercedes is aware of this and is most likely a defective high pressure fuel pump problem that needs replacing but there have been no recalls. I have looked it up on you tube and has been on ongoing issue with no recalls as of yet. I am taking my car to dealer on 11/15/2021 for this issue which they will charge me for even though its a safety issue

Filed Mar 1, 2021 · Engine, Fuel system · 93,000 miles · FL

When accelerating to pass on highway car suddenly goes into limp mode and losses power this is dangerous at 70 plus miles per hour, ECM code reads p0002 high pressure fuel regulator failure, check engine light will stay on until car has been shut off for longer than ten minutes or if you have a scanner you can erase code and drive the car normal, no passing. This has also happen pulling out from a stop light car has buckle with immediate power loss and will only creak up in limp mode just enough to get you home. I am a well season mechanic with over 20 years experience and this is absolutely dangerous. Please don't wait until someone gets hurt or killed by this which is a known issue going back before 2012. This happened 3 times this ast week and today.

Filed Dec 30, 2020 · Engine, Fuel system · 117,000 miles · SC

I have been having issues with my vehicle since I purchased it. Starting with me not having enough power from a start, in an attempt to gain enough power to drive at a safe speed from the start, as if the vehicle lags & no matter the gasoline or service, the problem never corrects. When I'm trying to gain speed to maintain with the flow of traffic safely the vehicle lags notably before gaining speed. I'm now having to replace the engine bc the oil coolant hose burst while I was driving on the highway with my child in the car. My check engine light activated but the only notice displayed on the dash was the engine coolant when it was low. When the hose burst while I was driving about 60mph I heard a pop sound under the hood, saw smoke coming from the exhaust, then a clanking noise under the hood that got louder & louder until I was able to pull off of the highway, & then I noticed a very large amount of oil on the ground that left a trail along the ground from my vehicle. That was very dangerous as my vehicle lost power during that incident. I'm told by the mechanic, the engine has to be replaced. This happened without a warning. The mercedes benz is supposed to be a safe & reliable luxury vehicle & not a nightmare to have for the owner.

Filed Jul 16, 2019 · Fuel system · 150,000 miles · SC

Power loss when accelerating. I pulled out in traffic and accelerated but...I loss power and almost got run over from the oncoming traffic!!! Major safety issue. Engine light comes on! This is a horrible issue for anyone that has experienced this problem. I'm hoping there hasn't been any fatalities do to this problem.

Filed Jul 10, 2019 · Fuel system · 30 miles · CA

I first noticed this problem about 2 years ago. I was on the highway getting ready to pass a big rig. About 2 seconds after I excelerated I noticed that I lost power to the engine and the check engine light turned on. I kept my foot on the pedal hoping to regain power to pass the big rig. I had no such luck. Shortly after I had vehicles behind me having to slow down because my car wouldn't excelerate to the desired speed. I finally made my way out of the highway to check my engine. I couldn't see a problem but the check engine light stayed on and the loss of power continued. I had to drive my car home slow. The next day I noticed that the check engine light had turned off and I was able to drive the car normal. The loss of power in that situation was scary and could have gone a lot worse. I know I am not the only one who has experienced this problem. I have seen blogs and youtube videos who describe similar experiences. Please help find a solution before someone is seriously hurt do to this problem.