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10.0

really awful
Crashes / Fires:
0 / 3
Injuries / Deaths:
0 / 0
Average Mileage:
41,415 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2011 Mercedes-Benz C300 electrical problems

electrical problem

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2011 Mercedes-Benz C300 Owner Comments (Page 1 of 2)

problem #40

Mar 092022

C300

  • miles

A D V E R T I S E M E N T S

I researched that the sunroofs on these models are faulty and have caused water/electrical damage under the carpeting and seats of the vehicles. That is what has happened with my 2011 C300 Sport.

- Cincinnati, OH, USA

problem #39

May 082024

C300

  • miles
my ESL (electronic steering lock. ) has went out when I did research this something that always happened please fix

- Charlotte, NC, USA

problem #38

Mar 012024

C300

  • miles
The right rear tail light housing harness melted due to an electrical issue. Wire tends to heat up too much. This caused my right rear tail light, right break light and right side turn signal not to function.

- Dallas, TX, USA

problem #37

Jul 172023

C300

  • 100,100 miles

A D V E R T I S E M E N T S

The contact owns a 2011 Mercedes-Benz C300. The contact stated that when starting the vehicle, the ignition was not reading the key, and the steering wheel was locked. The message to remove the key from the ignition was displayed. Additionally, the fuel gauge was inoperable and not reading the fuel level. The vehicle was taken to the dealer where it was diagnosed with a locked steering wheel and the steering wheel lock needed to be replaced. The vehicle was not repaired. The contact was informed that the parts were ordered to complete the repair. The manufacturer was not made aware of the failure. The failure mileage was approximately 100,100.

- Grants Pass, OR, USA

problem #36

Dec 192023

C300

  • miles
The sam box (electrical system fuze panel) located under the hood is in a spot where if the lid isn't on correctly water will drain from the windshield right into the sam box and cause the vehicles electrical system to deploy the steering wheel airbag. That's at least what happened to me. It was raining out that day and I guess I went over a bump that caused the lid of the sam to get out of place. I drove home and the car seat for a few hours. I went out upon unlocking the door as soon as I pulled the handle to open the driver side door the steering wheel airbag blew and the vehicle is now in srs mode. The dealership had told me that it's a design flaw but wants me to pay for the diagnostic. No lights were on and I did not file a police report.

- Pittsburgh, PA, USA

problem #35

Jan 092024

C300

  • miles
Melted taillight socket board.

- Jacksonville Beach, FL, USA

problem #34

Mar 222023

C300

  • miles

A D V E R T I S E M E N T S

Car slow down and stop and cannot start in traffic-??.

- Riverside, CA, USA

problem #33

Dec 232022

C300

  • miles
Due to apparently deficient sunroof water drain system design, rainwater and condensation entered the passenger compartment under the carpeting, potentially damaging the vehicle's electrical wiring. The vehicle is available for inspection upon request. A dealer has inspected and confirmed the damage. Initial symptoms of the problem were wet carpeting and the sound of water sloshing around under the floor of the passenger compartment.

- Hanover, PA, USA

problem #32

Jun 012022

C300

  • miles
I own a 2011 C300. Recently, my car suddenly stopped working while I was attempting to leave somewhere away from my home. It would not crank or turn over/start. So I was completely stranded, and in the extreme Florida heat. There has been no damage or wreck to cause this. There were also no warning lights or symptoms in my car beforehand. My car was towed to a Mercedes Benz dealership in the nearest city. They diagnosed the problem as an electronic steering lock failure. I asked how this happened. I was told that they do not know how it happened. I was also quoted a very expensive repair bill. Upon researching this problem further, I found out that steering lock failure and ignition switch failure is a recurring and common problem that Mercedes Benz already knows about, and many people with my car and similar models have had the same problem over the years. Age of the car at time of failure did not matter, either- it has happened to many cars at different ages and mileage.This is not a normal problem for any car to have, nor is it caused by normal wear and tear. Some people have even had their cars suddenly stop working while they are driving. Many people have also asked why these faulty parts have not been recalled yet. I contacted the company multiple times and did not receive any resolution to the problem. They said that this is my responsibility to repair, and they would not pay to repair this, nor reimburse me. The company's agent did not care at all about the issues, nor take any accountability for them as the manufacturer. Being stranded in the middle of nowhere at any time is dangerous for anyone, especially in certain areas or during intense weather. This entire issue has caused extreme stress for me- interruption in my schedule, lack of transportation, and financial loss. Please hold the Mercedes Benz company accountable for their lack of proper manufacturing and lack of proper repair to their parts that they know are faulty. Thank you.

- Macclenny, FL, USA

problem #31

Jan 272022

C300

  • miles
Rear taillight ground wire melting. Dealer said that this recall was performed previously, so now I had to pay for the repair parts. NHTSA CAMPAIGN NUMBER: 14V177000

- West Chester, OH, USA

problem #30

Jan 252022

C300

  • miles

A D V E R T I S E M E N T S

Went to work and came out and the vehicle says to remove key from ignition. Was stuck in the middle of the night in freezing temperatures and had no way to get anywhere. It-??s a common problem that Mercedes knows about and is charging thousands of dollars to repair because it can only be done through them.

- Raceland, KY, USA

problem #29

May 012021

C300

  • miles
The rear tail light housing harness melted due to an electrical issue. This caused my rear tail light & break lights not to function.

- Fort Lee, NJ, USA

problem #28

May 142020

C300 6-cyl

  • 116,562 miles
Car parked, steering column seized. Unable to start ignition or put vehicle in gear.

- Tucson, AZ, USA

problem #27

Sep 052019

C300

  • 0 miles
My car sound like the power steering has gone it's very loud. Also secondary air flow just replaced and now it's going to need another one at 2000 a pop. Finally the electrics is very weird. Lights will go out then come back on. My day time running lights stay on day and night no matter where I turn the light switch. The day time running light is on even when I turn on high beams. No matter if it's moving or not all these things are happening.

- Newport, RI, USA

problem #26

Sep 032019

C300 6-cyl

  • 87,536 miles
The contact owns a 2011 Mercedes-Benz C300. The contact stated that the vehicle failed to start. There were no warning indicators illuminated. The vehicle was taken to Mercedes-Benz of northlake (located at 10725 northlake auto plaza, charlotte, nc 28269, (704) 321-4833) where it was diagnosed that the electronic steering was faulty. The technician replaced the steering lock. The vehicle was repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 87,536.

- Charlotte, NC, USA

problem #25

Jul 162019

C300

  • 140,000 miles
I was leaving work. I unlocked the vehicle with the key fob, placed the key fob in the ignition, and it failed to start. I was left stranded without a way to leave. I have been told my problem lies within a "faulty ignition switch" that only mb can repair. I have been told this is a common problem among the C-class models and I am hoping mb can address the issue with a recall.

- Iva, SC, USA

problem #24

Jul 012019

C300

  • 53,000 miles
The contact owns a 2011 Mercedes-Benz C300. While attempting to start the vehicle, the engine would not start and the power steering ability seized. The vehicle was towed to Mercedes Benz of honolulu (818 okapi omani ave, honolulu, hi) where it was diagnosed that the steering lock module was faulty and needed to be replaced. The module was replaced and the failure was remedied. The manufacturer was notified of the failure. The failure mileage was 53,000.

- Honolulu, HI, USA

problem #23

Mar 282019

C300

  • 91,000 miles
I am writing to file a complaint. The vehicle did not start after the key was put into the ignition. There were no warning lights. In addition, the vehicle did not start at all. The tow service was called. The tow repair representative indicated the problem may be the "ignition switch, " as the battery was fine. The vehicle was towed to the dealership. The entire ignition switch had to be replaced. The cost was $1214. This is unacceptable. Fortunately, the vehicle was in a secure place -- the home garage. However, had it been in another location, a serious safety hazard could have occurred. The vehicle only has approximately 91,000 miles, so it is inconceivable as to why an ignition switch would need to be replaced. There was no warning. This is an item that is clearly a manufacturer's defect and should be under warranty.

- Upper Marlboro, MD, USA

problem #22

Oct 282017

C300

  • miles
"takata recall" I contacted the the authorized Mercedes-Benz dealer has failed to remedy this safety recall in a timely manner, I have continuously reached out for year and half and the Mercedes-Benz dealer continuous to stated that the air bags are on back order.

- Largo, MD, USA

problem #21

Oct 202017

C300

  • 106,000 miles
1. takata recall: This recall of a dangerous situation has been going on for about two years now is unacceptable and hazardous to em and my family. 2. law suit: Greg suddreth and paul denton V. Mercedes-Benz usa, llc. On 10/30/17, I had to pay $3445.13 for a repair my balance shafts gears, which we're deemed defective in all M272 engines which is in my C300. However, in the above mentioned law suit, this problem was supposed to have been corrected. When I brought this to the attention to the Mercedes-Benz of modesto technicians, they said I missed the cut-off date by one year. They acknowledged I had the same problem and checked to see if I qualified for a free repair, but later claimed, the issue with the defective balance shafts gears had been addressed. How can that be when I incurred the same problem. The repair should have been repaired under warranty. I eventually had to have the car repaired at Mercedes of pleasanton because modesto didn't have any open appointments. Thank you for your attention in this matter. 3. faulty electronic stearing lock: Engine won't turn on and steearing wheel is locked. Several people have had this same problem. Mercedes claim not a safety issue, but when your daughter gets stuck at midnight at an amusement park on high school senior night...that's a safety issue. Thank you for your attention in this matter.

- Oakdale, CA, USA

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