2012 Mercedes-Benz C350 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
- Base Sedan 4-Door
- Sport Sedan 4-Door
- Base Coupe 2-Door
- 4Matic Coupe 2-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
Mercedes-Benz USA, LLC. (MBUSA) is recalling certain 2012 C250, C250 Coupe, C300, C350, C350 Coupe, C63 AMG, and C63 AMG Coupe vehicles equipped with a front passenger air bag assembly replaced under
An incorrect passenger air bag may not provide adequate protection, increasing the risk of injury in
MBUSA will notify owners, and dealers will replace the passenger air bag module, free of charge. Th
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2015-2016 E400 Coupe, 2012-2015 C250 Coupe, C350 Coupe, C63 AMG Coupe, 2011-2014 E350 Coupe, and 2012-2014 E350 Cabrio vehicles. An incorrect front
An incorrect air bag may not function properly in a crash, increasing the risk of injury.
Dealers will replace the front passenger air bag on the affected vehicles, free of charge. Owner n
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2012 C300 4Matic, C250, C250 Coupe, C350, C350 Coupe 4Matic, C350 Coupe, C63 AMG, C63 AMG Coupe, E350 Coupe 4Matic, E350 Cabrio, E350 Coupe, E550 Ca
An inflator rupture may result in metal fragments striking the vehicle occupants resulting in seriou
MBUSA will notify owners, and dealers will replace the front passenger air bag modules, free of char
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 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
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
Showing the 8 most recent of 78 technical service bulletins on file with NHTSA.
The contact owns a 2012 Mercedes-Benz C350. The contact stated while the vehicle was parked, the contact noticed a strong smell of fuel around the exterior of the vehicle. In addition, the contact sta
My carâs left side rear subframe is cracked due to corrosion. I started hearing a weird noise a week ago, and my car suddenly veered to the left side when I pressed the brake. I almost crashed my ca
My carâs left side rear subframe is cracked due to corrosion. I started hearing a weird noise a week ago, and my car suddenly veered to the left side when I pressed the brake. I almost crashed my ca
The contact owns a 2012 Mercedes-Benz C350. The contact stated while driving at an undisclosed speed, the sunroof glass shattered and landed on the sunroof cover. There was no impact on the sunroof th
1. The (RH) rear suspension forward link attach point on the rear Suspension Cross-Member (Mercedes-Benz P/N: 204-350-01-41), separated from the sub frame due to internal corrosion of the Suspension
Showing the 5 most serious of 39 complaints filed with NHTSA.
