Mercedes-Benz C-Class (2007 - 2014)

Electronic diagnostics

NOTICE: exact coverage may vary between vehicles. Please view this preview to check your job is included.

A world-leading diagnostics application, now available for DIYers

• Wiring diagrams for engine management, ABS, ESP and air conditioning
• Retrieve data from the vehicle’s engine management/ CAN-Bus system to diagnose faults and component errors which have generated fault codes
• Enter fault codes and see their description with suggested components to test

• Comfort Wiring Diagrams

  • Clear, “localised” wiring schematics for key vehicle features, with wire and component trace functionality for fast, efficient, first-time fixes.
  • Includes pan and zoom functionality
  • Highlight feature to trace corresponding wires and components
  • Includes:
    • Air conditioning
    • Central locking
    • Exterior lights
    • Horn
    • Instrument cluster
    • Power windows
    • Starting/charging
    • Supplemental restraint system (SRS)/Airbag
    • Wash/wipe system

• Fuse locations

  • Fully illustrated guide to locating each fuse

• Warning lights

  • Complete guide to every common warning light and how to respond

For a new generation of vehicles, welcome to an all-new repair guide. The Haynes Manual has inspired and helped DIY repairers for more than 60 years, but today’s modern vehicles come with new challenges that can only be tackled by a digital product.

When we first began selling manuals in the 1960s, vehicles were simple to maintain and there were relatively few models on sale. Today, electronics are a vital part of how your vehicle operates and there are more than 100,000 different variants of make/ model/ body type/ gearbox and engine.

So at Haynes, we knew that to continue offering a great product, we needed to take a brand-new approach - nothing less than a reinvention of the repair manual. With so many models on sale, it is impossible to strip down and rebuild enough cars to cover the market properly. Instead, Haynes Autofix is based upon workshop data with added DIY tutorials full of general tips and techniques.

The instructions are no longer step-by-step and are best-suited to confident home mechanics or professionals.

But we’re adding something new, powerful and very important.

Modern cars are equipped with dozens of sensors and ECUs (control units). Today, the first step when servicing a car is to plug a diagnostic tool into the OBD (on-board diagnostics) system of the vehicle.

So, we’re putting an electronics diagnosis module in the hands of DIY repairers for the first time. Enter a fault code and follow the instructions to test components in order, and establish the likely cause of a problem. Our tool goes far beyond what commonly available fault code readers offer, and puts you, the car owner, back in control. Even if you choose not to complete the repair yourself, you will know exactly what the problem is when you hand it over to a workshop.

Haynes Autofix is not a Haynes Manual. We want to be very clear about this, but we know that our new product will enable many thousands of you to continue maintaining your vehicle and troubleshooting problems in a DIY environment.

Note: Autofix is a worldwide product. You will sometimes see RHD (right hand drive) or LHD (left hand drive) mentioned. On location diagrams, we sometimes have LHD drawings only; but they do apply to RHD vehicles in a mirror image.

The experts at Haynes have compiled 50+ tutorials on tasks that range from changing the oil to replacing a timing belt. Use these DIY friendly guides alongside the data for your vehicle to complete the job correctly first time.

Guides include tools needed, level of difficulty, common problems and expert tips. We’ll even suggest other jobs to take on in conjunction with the one you have chosen.

More content is added continually to ensure you are covered for every job!

In addition to comprehensive data, diagrams and written tutorials, a wide range of instructional videos are available to view. Understand your job quickly and learn the best way to tackle each one.

More content is added continually to ensure you are covered for every job!