2012 Mercedes-Benz C250 Service and Repair Manual

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Factory-Grade Data

2012 Mercedes-Benz C250 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
  • 4Matic Sedan 4-Door
  • Sport Sedan 4-Door
  • Luxury Sedan 4-Door
  • Base Coupe 2-Door

Engines covered

  • 1.8L 1796CC l4 GAS DOHC Turbocharged
  • 2.5L 2496CC V6 GAS DOHC Naturally Aspirated
  • 1.8L 1796CC 110Cu. In. l4 GAS DOHC Turbocharged
  • 3.5L 3498CC 213Cu. In. V6 GAS 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

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Vehicle Safety Data

2012 Mercedes-Benz C250 Recalls & Complaints

No active recalls The 2012 Mercedes-Benz C250 has no recalls on file with NHTSA.
TSB #11032875

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

TSB #11032684

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

TSB #11032599

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

TSB #11031817

The purpose of this letter is to advise you of additional benefits that Mercedes-Benz USA, LLC (MBUSA) is providing to you regarding your vehicle ownership. Whats Included In our continuing efforts to assure the proper performance of Merced

TSB #11031733

The purpose of this letter is to advise you of additional benefits that Mercedes-Benz is providing to you regarding your vehicle ownership. What's Included In our continuing efforts to assure the proper performance of Mercedes-Benz products

TSB #11031636

This NCU replaces the prior NCUs issued on October 30, November 09 & November 20, 2020 and contains clarification on the replacement of the Camshaft Adjuster under this extended warranty. Mercedes-Benz AG (MBAG), the manufacturer of Mercede

TSB #11031634

This NCU replaces the prior NCU issued on October 30, 2020 and contains clarification on Camshaft Adjuster kit contents. Mercedes-Benz AG (MBAG), the manufacturer of Mercedes-Benz vehicles, has determined that on certain Model Year (MY) 201

TSB #11031620

Mercedes-Benz AG (MBAG), the manufacturer of Mercedes-Benz vehicles, has extended the warranty for the high pressure fuel pump from the original New Vehicle Limited Warranty of 4 years / 50,000 miles to 10 years / 120,000 miles (whichever o

Showing the 8 most recent of 95 technical service bulletins on file with NHTSA.

20201122Component: AIR BAGSCrash reported2 injured

PLEASE ALLOW THIS TO SERVE AS A LIMITED NOTICE TO I) MERCEDES-BENZ AG, II) MBUSA AND III) DAIMLER AG OF A NEW TAKATA AIRBAG INFLATOR RUPTURE FOR TREAD COMPLIANCE PURPOSES. THE SUBJECT VEHICLE IS A 20

20191122Component: STRUCTURE:BODY:BUMPERSCrash reported

TL* THE CONTACT OWNS A 2012 MERCEDES-BENZ C250. THE CONTACT RECEIVED NOTIFICATION OF NHTSA CAMPAIGN NUMBER: 17V017000 (AIR BAGS). THE CONTACT STATED THAT THE MANUFACTURER EXCEEDED A REASONABLE AMOUNT

20191122Component: AIR BAGSCrash reported

TL* THE CONTACT OWNS A 2012 MERCEDES-BENZ C250. THE CONTACT RECEIVED NOTIFICATION OF NHTSA CAMPAIGN NUMBER: 17V017000 (AIR BAGS). THE CONTACT STATED THAT THE MANUFACTURER EXCEEDED A REASONABLE AMOUNT

20171124Component: AIR BAGSCrash reported

TAKATA RECALL I WAS INVOLVED IN A HEAD ON COLLISION IN 2015 DRIVING MY 2012 MERCEDES C250. THE IMPACT WAS SEVERE AND TOTALED MY CAR, BUT THE AIRBAGS DID NOT DEPLOY. MY CRASHING SPEED WAS WELL OVER 4

20210627Component: ENGINEFire reported

2012 Mercedes C250 caught fire with no warning. Drove about 5 miles to the store and parked the car. A passerby said your car is on fire. Within minutes the entire front of the car was ablaze. The

Showing the 5 most serious of 317 complaints filed with NHTSA.

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