2014 Mercedes-Benz CLA250 Service and Repair Manual

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2014 Mercedes-Benz CLA250 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

Engines covered

  • 2.0L 1991CC l4 GAS DOHC Turbocharged
  • 2.0L 1991CC l4 FLEX DOHC Turbocharged

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
NHTSA #21V19700019/03/2021Component: STRUCTURE:BODY:ROOF AND PILLARS

Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2017-2020 C300 Coupe, C43 Coupe AMG, C43 AMG, 2015-2020 C300, GLA250, 2016-2018 C350e, CLA45 Coupe AMG, 2015 C400, S65 AMG, 2015-2019 C63 AMG, 2016

Consequence

The adhesive bonding of the front panel might deteriorate, possibly causing the front panel to detac

Remedy

Mercedes-Benz dealer will remove the bonded panel and will install a new front panel by following th

NHTSA #23V85400015/12/2023Component: STRUCTURE:BODY:ROOF AND PILLARS

Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2014-2020 C-Class, CLA, GLA, S-Class, GLC, and GLE vehicles. Please refer to MBUSA's recall report for specific vehicle details. The front roof pa

Consequence

A detached roof panel can become a road hazard, increasing the risk of a crash.

Remedy

Dealers will replace the front panel, free of charge. Owner notification letters were mailed on Aug

NHTSA #16V90100014/12/2016Component: SERVICE BRAKES, HYDRAULIC:POWER ASSIST:VACUUM:HOSES, LINES/PIPING, AND

Mercedes-Benz USA, LLC (MBUSA) is recalling certain model year 2014 CLA250 vehicles manufactured December 14, 2012, to April 24, 2013 equipped with gasoline engines. The affected vehicles have a fitt

Consequence

If the vehicles unexpectedly need increased pressure on the brake pedal to apply the brakes, there w

Remedy

MBUSA will notify owners, and dealers will replace the connector end fitting at the brake booster, f

NHTSA #19V78700001/11/2019Component: COMMUNICATION

Mercedes-Benz USA, LLC. (MBUSA) is recalling certain 2013-2017 vehicles due to a software fault that may cause the date and time for the emergency call system (eCall) to differ from the actual date an

Consequence

An inaccurate vehicle location may delay emergency responders, increasing the risk of injury.

Remedy

MBUSA has initiated an Over the Air (OTA) remote update. MBUSA will also notify owners, and dealers

TSB #11033185

Complaint After successful commissioning of the HERMES control unit (N112/9) with XENTRY Diagnosis DVD 03/2026, the message "SOS - service not activated" appears on the instrument cluster. In addition, the following two conditions are also

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 #11032699

Complaint 1. General Diagnostic Tips 2. One or More PARK Sensor Activations 3. Red Ring Around Vehicle 4. "Active Parking and Parking Assist Inoperative" on Instrument Cluster 5. Cameras 6. Other Park Topics Cause Various root causes Remedy

TSB #11031729

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

TSB #11031616

Daimler AG (DAG), the manufacturer of Mercedes-Benz vehicles, has determined that on the various Model Year (MY) 2014 - 2018 Mercedes-Benz vehicles listed below, the engine control unit (ECU) software may not meet current specifications. In

TSB #11031580

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

TSB #11030088

Complaint 1. General Diagnostic Tips 2. One or More PARK Sensor Activations 3. Red Ring Around Vehicle 4. "Active Parking and Parking Assist Inoperative" on Instrument Cluster 5. Cameras 6. Other Park Topics Cause Various root causes Remedy

TSB #11029093

Complaint 1. General Diagnostic Tips 2. One or More PARK Sensor Activations 3. Red Ring Around Vehicle 4. "Active Parking and Parking Assist Inoperative" on Instrument Cluster 5. Cameras 6. Other Park Topics Cause Various root causes Remedy

Showing the 8 most recent of 84 technical service bulletins on file with NHTSA.

20210804Component: SERVICE BRAKESCrash reported1 injured

Was driving on a road with 3 lanes .I was in the right lane was switching to middle when my stering and brakes just locked up I was not able to control the car I ended up all the way in the left lane

20210804Component: STEERINGCrash reported1 injured

Was driving on a road with 3 lanes .I was in the right lane was switching to middle when my stering and brakes just locked up I was not able to control the car I ended up all the way in the left lane

20200720Component: ENGINECrash reported1 injured

ON THIS DAY, I WAS NEARLY KILLED IN MY 2014 MERCEDES CLA250 4MATIC THAT STALLED ON A HIGHWAY IN NEW YORK CITY. THE CAR HAS ROUGHLY 40,300 MILES ON THE ODOMETER. I WAS DRIVING ON THE BROOKLYN QUEENS

20200720Component: FUEL/PROPULSION SYSTEMCrash reported1 injured

ON THIS DAY, I WAS NEARLY KILLED IN MY 2014 MERCEDES CLA250 4MATIC THAT STALLED ON A HIGHWAY IN NEW YORK CITY. THE CAR HAS ROUGHLY 40,300 MILES ON THE ODOMETER. I WAS DRIVING ON THE BROOKLYN QUEENS

20200720Component: POWER TRAINCrash reported1 injured

ON THIS DAY, I WAS NEARLY KILLED IN MY 2014 MERCEDES CLA250 4MATIC THAT STALLED ON A HIGHWAY IN NEW YORK CITY. THE CAR HAS ROUGHLY 40,300 MILES ON THE ODOMETER. I WAS DRIVING ON THE BROOKLYN QUEENS

Showing the 5 most serious of 279 complaints filed with NHTSA.

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