I am wanting to add information to my original complaint. Tracking#11589822 When I called in the electrical issue to AAA the agent said this is a common problem on these cars. Next, I want to add photos the Mercedes of Fresno service department sent me during the 2nd time my car was taken in to be checked. I honestly don't remember off hand when the collision occurred, I have that paper work somewhere. I will find it and send it in also. I will also get paper work from the auto body place that fixed as much of the wiring that it could. There was also a video on line I will try to find again and send that in.
2018 Mercedes-Benz C300 electrical problems
10 complaints (10% of all complaints for this car). 1 crash reported.
- owner complaints
- 10
- of this car's complaints
- 10%
- crashes
- 1
- recalls
- 5
Which part fails
Owners did not name a specific part.
At what mileage
Complaints by mileage at the time of the problem.
0k-25k
25k-50k
50k-75k
75k-100k
100k-125k
125k-150k
150k-175k
175k-200k
200k+
Mercedes-Benz C300 electrical problems in other years
Related recalls
Electrical system: software
- What is wrong
- Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2017-2022 CLA-Class, GLA-Class, GLE-Class, GLS-Class, SLC-Class, A-Class, AMG GT-Class, C-Class, E-Class, S-Class, SL-Class, GLC-Class, CLS-Class, GLB-Class, and G-Class vehicles. Please refer to MBUSA's recall report for specific vehicle model details. An error in the communication module's SIM card software can cause a mobile network connection failure, disabling the emergency call (eCall) system.
- Risk
- A disabled eCall system would prevent a vehicle occupant from contacting the emergency services call center in an emergency, potentially delaying emergency responders and increasing the risk of injury.
- Remedy
- The communication module software will be updated through an Over-the-Air (OTA) update or by a dealer, free of charge. Owner notification letters were mailed July 8, 2022. Owner notification letters will be mailed in phases, on July 8, 2022, May 17, 2024, July 29, 2024, and September 27, 2024. Owners may contact MBUSA customer service at 1‑800‑367‑6372. MBUSA's numbers are for this recall is 2022060005 and 2023110006.
Recall number 22V365000 · Recall details
Communication
- What is wrong
- Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2017-2019 C300, E300, 2018-2020 CLA250, 2020 CLS450, AMG E53, AMG GT53, GLE450, 2018 AMG E63, AMG GTA, 2017-2020 GLA250, GLC300, 2019 GLC350, AMG GLC43, 2017-2018 GLE350, 2019 AMG GLC 43, GLC350, GLE400, 2017 GLS450, S550, C300 Cabrio, and 2018-2019 S560 vehicles. On June 18, 2021, an additional 9 vehicles were added, including certain 2021 GLA250, GLC300, 2018 S450, E400, and 2017 CLA250 vehicles. The communication module might have been inadvertently deactivated during a service visit, which could have disabled the Emergency Call (eCall) function.
- Risk
- A disabled eCall system would prevent a vehicle occupant from contacting emergency services through the call center in an emergency, potentially delaying emergency responders and increasing the risk of injury.
- Remedy
- MBUSA will notify owners, and dealers will inspect the communication module and activate it, if necessary, free of charge. The recall began March 31, 2021. Letters for the owners of the 9 additional vehicles were mailed July 9, 2021. Owners may contact MBUSA customer service at 1‑800‑367‑6372. MBUSA's number for this recall is 2021030005.
Recall number 21V072000 · Recall details
Electrical system: software
- What is wrong
- Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2016 - 2021 CLA-Class, GLA-Class, GLE-Class, GLS-Class, SLC-Class, A-Class, GT-Class, C-Class, E-Class, S-Class, CLS-Class, SL-Class, B-Class, GLB-Class, GLC-Class, and G-Class vehicles. Please refer to the Part 573 report for specific vehicle model details. The software design of the communication module may fail to communicate the correct vehicle location for the emergency call system (eCall) in the event of a crash.
- Risk
- Failure of the eCall system may result in emergency responders being dispatched to the wrong location, increasing the risk of injury following a crash.
- Remedy
- MBUSA will notify owners, and the communication module software will be updated by a dealer, or through an over-the-air (OTA) update, free of charge. The recall began March 12, 2021. Owners may contact MBUSA customer service at 1‑877‑762‑8267. MBUSA's number for this recall is 2021020025.
Recall number 21V058000 · Recall details
Electrical system: 12v/24v/48v battery
- What is wrong
- Mercedes-Benz USA, LLC. (MBUSA) is recalling certain 2018-2019 C300, C300 4MATIC, and C43 AMG 4MATIC vehicles. The mounting bracket for the 12-volt battery may not be secured. This may allow the battery to shift, possibly disconnecting the terminals in the event of a crash.
- Risk
- Loss of power from the battery can impair post-crash functions, such as communicating with emergency services and activating hazard lights. The battery may also detach and become a road hazard. Either of these scenarios can increase the risk of injury.
- Remedy
- MBUSA will notify owners, and dealers will replace the battery mounting bracket, free of charge. The recall began October 18, 2019. Owners may contact MBUSA customer service at 1‑800‑367‑6372. MBUSA's number for this recall is 2019090010.
Recall number 19V586000 · Recall details
Electrical system: 12v/24v/48v battery: cables
- What is wrong
- Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2018 Mercedes-Benz C300 4Matic Coupe, C300 4Matic Cabrio, E300, E300 4Matic, C300, C300 4Matic, C300 Coupe and C300 Cabrio vehicles. The cover for the starter battery may not cover the live positive electrical wire, and in certain crashes, the vehicle's strut brace may deform and short circuit the battery.
- Risk
- If the battery is shorted, the emergency door unlocking would be deactivated for an outside responder and the short circuit could increase the risk of a fire.
- Remedy
- MBUSA will notify owners, and dealers will replace the positive pole cover, free of charge. The recall began November 27, 2018. Owners may contact MBUSA customer service at 1‑800‑367‑6372. MBUSA's number for this recall is 2018110002.
Recall number 18V725000 · Recall details
What 2018 Mercedes-Benz C300 owners say
Most recent owner complaints, unedited.
The contact owns a 2018 Mercedes-Benz C300. The contact stated that while driving at an undisclosed speed, there was a message was displayed that there was a light bulb malfunction. The contact stated that the rear turn signal lights and brake lights were not operating properly. Additionally, the contact stated that the fuel door failed to operate properly, and occasionally opened independently while driving. The vehicle was taken to a local dealer, where it was diagnosed and determined that the cause of the electrical issues was water in the spare tire compartment. The vehicle was not repaired. The manufacturer was made aware of the failure. The approximate failure mileage was 52,800.
According to the dealership, if the car is not started every 3 days, it will shut itself down. The car was towed 6 times, I'm a business woman, my coworkers, friends drives Mercedes Benz, and no one have heard of any such issues. Any cheaper cars, after 2 weeks at the airport, the car starts. Something is wrong with the car, something is draining the car battery if not started every 3/ 4 days. They are taking advantage to the fact, that I'm a female and older. They need to replace the car, fix, or junk their car. Someone needs to take responsibility for the repair of the car.
Hello My c300 2018 only have 79k and suddenly the engine light on, when I check it show that I need Positive Crankcase ventilation valve replace. it cost $2300. As I know a lot of people who own Merced have the same problem so should have a recall for that Thanks
The contact owns a 2018 Mercedes-Benz C300. The contact stated that after starting the vehicle, the S.O.S. Not Active message displayed. The contact was concerned that in the event of an emergency, the emergency services function would be inoperable. The vehicle had previously been serviced under the federal safety agency Campaign Number: 21V058000 (Electrical System, Communication) however, the failure recurred. The dealer was made aware of the failure; however, the vehicle was not diagnosed or repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 85,000.
The contact owns a 2018 Mercedes-Benz C300. The contact stated that the SOS warning light was illuminated. Upon testing the SOS system, the contact stated that the system failed to operate as needed. The contact then received notification of the federal safety agency Campaign Number: 22V365000 (Electrical System, Communication). The vehicle was taken to the dealer for service, however, the failure persisted. The vehicle was taken back to the dealer on multiple occasion for multiple repairs related to the failure. Recently, the contact was informed that the Hermes control unit was defective. The manufacturer was notified of the failure and the contact was informed that the repair cost was not covered. The vehicle was not repaired. The failure mileage was unknown.
The sunroof on the vehicle jams and either stays partially open or won’t close in the rear completely. I finally got it to close but it will not open again. I know multiple mercedes owners who have this issue with the sunroof and if the sunroof will continue to not lock properly this could be a hazard on the highway if the brackets were to break and the glass slides off.
To Whom It May Concern, I bought this certified preowned Mercedes Benz, and the recall is open. I have taken the car to the dealership, they deny me from service because its an over the air recall. The Mercedes Benz website clearly states on their letter for consumer that the remedy for this recall can be taken care at the dealership free of charge or an over the air update. Its July and I got the car back in February.
Tl* the contact owns a 2018 mercedes-benz c300. The contact received notification of the federal safety agency campaign number: 21v058000 (communication, electrical system) however, the part to do the recall repair was not yet available. The contact stated that mercedes-benz of san francisco (located at 500 8th st, san francisco, ca 94103, (415) 673-2000) exceeded a reasonable amount of time for the recall repair. The manufacturer was notified of the issue. The contact had not experienced a failure. Parts distribution disconnect. ## VIN passed ## mercedes-benz 2018 c300a ##
Tl* the contact owns a 2018 mercedes-benz c300. While operating the vehicle, the contact noticed a burnt crayon odor inside the vehicle. The odor made it difficult to breathe inside the vehicle. The vehicle was taken to mercedes-benz of goldens bridge (321 ny-22, goldens bridge, ny 10526), but the cause of the failure was not determined. The manufacturer was notified of the failure. The failure mileage was 14,000.
Questions about the 2018 Mercedes-Benz C300 electrical
Does the 2018 Mercedes-Benz C300 have electrical problems?
Owners have filed 10 complaints about the electrical of the 2018 Mercedes-Benz C300, 10% of all its complaints.
At what mileage do 2018 Mercedes-Benz C300 electrical problems start?
Not enough complaints include the mileage to tell.
Was there a recall on the 2018 Mercedes-Benz C300 electrical?
Yes, 5 recalls: 22V365000, 21V072000, 21V058000. Check your VIN to see if your car still needs the free repair.
What year does the Mercedes-Benz C300 have the most electrical problems?
The Mercedes-Benz C300 model years with the most electrical complaints are 2010 (84 complaints), 2015 (50 complaints) and 2011 (43 complaints).
Other 2018 Mercedes-Benz C300 problems
Engine 35Body 14Steering 12Fuel system 10Driver assistance 5Airbags 4Lights 3Visibility 3Brakes 2Tires 2Transmission 2Seat belts 1Seats 1Wheels 1
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