2014 Mercedes-Benz C300 service and repair manual — a detailed, factory-style reference for maintenance, diagnostics, and repair. Use it to confirm correct procedures, specifications, and system coverage before you start work.
Designed for technicians and DIY owners, this manual helps you troubleshoot accurately, follow step-by-step repair procedures, and reference wiring diagrams and system sections quickly while you work.
What’s included
- Step-by-step repair procedures and service information
- Specifications and reference data (where provided)
- Wiring diagrams and electrical sections
- Powertrain, brakes, steering, suspension, HVAC and more
Trims covered
- 4Matic Sport Sedan 4-Door
- 4Matic Sedan 4-Door
- 4Matic Luxury Sedan 4-Door
Engines covered
- 3.5L 3498CC V6 GAS DOHC Naturally Aspirated
- 3.5L 3498CC V6 FLEX DOHC Naturally Aspirated
Index / Table of contents
- Body
- Brakes
- Chassis Electrical
- Driveline
- Engine Cooling
- Engine Electrical
- Engine Mechanical
- Engine Performance & Emission Controls
- Fuel System
- General Information & Identification
- Heating, Ventilation, & Air Conditioning
- Hybrid & Electric Vehicle Systems
- Steering
- Suspension
- Transmission, Clutch, & Transfer Case
- Wiring Diagrams
Complaint There are several types of complaint about noises or poor windshield wiper wiping performance: A: Wiper blades squeaking, chattering, shuddering B: The windshield is not wiped completely (streaking) C: During the downward movement
Complaint Potential corrosion on the rear axle carrier Cause Due to market-specific conditions such as moisture, ingress of dirt and/or environmental influences, corrosion can occur on the rear axle carrier Remedy In the event of a complain
Complaint Creaking noise, in irregular sequence when driving slowly in combination with slight steering movements and/or Creaking/crackling noises from the area of the wheel bearing on the front axle when cornering/ maneuvering. Sound file
This NCU replaces the prior NCUs issued on May 18, June 25, 2020 and October 1, 2020 and contains important workshop instructions on how the HVAC Service Warranty repair must be carried out. To enhance the satisfaction of our customers, avo
Complaint Headlamp, front fog lamp leaky or fogged. Cause Fogging of the headlamps is a natural phenomenon, which can occur under certain climatic conditions. It does not lead to any technical impairment of the headlamp. If a pressure compe
Complaint Headlamp, front fog lamp leaky or fogged Cause Fogging of the headlamps is a natural phenomenon, which can occur under certain climatic conditions. It does not lead to any technical impairment of the headlamp. If a pressure compen
Complaint Headlamp, front fog lamp leaky or fogged Cause Fogging of the headlamps is a natural phenomenon, which can occur under certain climatic conditions. It does not lead to any technical impairment of the headlamp. If a pressure compen
Complaint Single throttle lift-off clunking noise from the side shaft when moving off (audible at the outboard end). The clunk is heard once when changing from forward to reverse (and vice versa). Note: Sound file in attachment Cause If the
Showing the 8 most recent of 82 technical service bulletins on file with NHTSA.
TL* THE CONTACT OWNED A 2014 MERCEDES-BENZ C350. THE CONTACT STATED THAT WHILE DRIVING AT APPROXIMATELY 15-30 MPH, THE VEHICLE INDEPENDENTLY ACCELERATED. THE CONTACT STATED THAT HE WAS UNAWARE OF HOW
WHILE IN MOTION (DRIVING) ANOTHER DRIVER TURNED IN FRONT OF ME, CAUSING ME TO T-BONE HER (POLICE REPORT WITH DESCRIPTION ATTACHED). I SLAMMED ON BRAKES TO TO LESSEN THE UNAVOIDABLE IMPACT. I ESTIMAT
TL* THE CONTACT OWNS A 2014 MERCEDES BENZ C300. WHEN THE IGNITION WAS TURNED TO THE ON POSITION AND THE VEHICLE WAS SHIFTED INTO DRIVE WITH THE BRAKE PEDAL DEPRESSED, THE VEHICLE ACCELERATED WITHOUT W
2014 MERCEDES BENZ C300. CONSUMER WRITES IN REGARDS TO CONCERNS WITH THE PASSENGER SIDE AIRBAG. *LD THE CONSUMER STATED NUMEROUS CALLS AND ATTEMPTS WERE MADE TO HAVE THE RECALL REPAIR COMPLETED TO
TL* THE CONTACT OWNS A 2014 MERCEDES-BENZ C300. WHILE THE CONTACT'S SON WAS DRIVING 40 MPH, ANOTHER VEHICLE CRASHED INTO THE FRONT END OF THE CONTACT'S VEHICLE. THE AIR BAGS FAILED TO DEPLOY. THERE WE
Showing the 5 most serious of 120 complaints filed with NHTSA.
