Mercedes-Benz C-Class Manuals

Mercedes-Benz C-Class Owners Manual: Engine

Display messages

Possible causes/consequences and ► Solutions

See Operator's Manual

* The battery is not being charged.
NOTE Possible engine damage if you continue driving
  • Do not continue driving under any circumstances.
  • Consult a qualified specialist workshop.
  • Pull over and stop the vehicle safely and switch off the engine, paying attention to road and traffic conditions.
  • Consult a qualified specialist workshop.

Stop Vehicle Leave Engine Running

* The battery charge level is too low.
  • Pull over and stop the vehicle safely as soon as possible, paying attention to road and traffic conditions. Do not continue driving under any circumstances.
  • Leave the engine running.
  • Wait until the display message disappears before pulling away.
Check Coolant Level See Operator's Manual * The coolant level is too low.
NOTE Engine damage due to insufficient coolant
  • Avoid long journeys with insufficient coolant.
  • Add coolant.

12 V Battery See Operator's Manual

* The engine is off and the battery charge level is too low.
  • Switch off electrical consumers that are not required.
  • Leave the engine running for a few minutes, or drive for a longer distance.

    The battery will charge.

If the message appears while the engine is running, this indicates an on-board electrical system malfunction.

  • Visit a qualified specialist workshop.

Stop Vehicle See Operator's Manual

* The battery is no longer being charged and the battery charge level is too low.
NOTE Possible engine damage if you continue driving
  • Do not continue driving under any circumstances.
  • Consult a qualified specialist workshop.
  • Pull over and stop the vehicle safely as soon as possible, paying attention to road and traffic conditions. Do not continue driving under any circumstances.
  • Switch off the engine.
  • Consult a qualified specialist workshop.
* The fan motor is defective.
  • Avoiding high loads on the engine, drive to the nearest qualified specialist workshop. In doing so, ensure that the coolant temperature display remains below the red marking.

Coolant Too Hot Stop Vehicle Turn Engine Off

* The coolant is too hot.
  • Pull over and stop the vehicle safely and switch off the engine, paying attention to road and traffic conditions.
WARNING Danger of burns when opening the hood
If you open the hood when the engine has overheated or during a fire in the engine compartment, you could come into contact with hot gases or other escaping operating fluids.
  • Before opening the hood, allow the engine to cool down.
  • In the event of a fire in the engine compartment, keep the hood closed and call the fire service.
  • Wait until the engine has cooled down.
  • Make sure that the air supply to the radiator is not obstructed.
  • Avoiding high loads on the engine, drive to the nearest qualified specialist workshop. In doing so, ensure that the coolant temperature display remains below the red marking.

Gas Cap Loose

* There has been pressure loss in the fuel system. The fuel filler cap is not closed correctly or the fuel system is leaking.
  • Close the fuel filler cap.
  • If the fuel filler cap was already properly closed: consult a qualified specialist workshop.

Fuel Level Low

* The fuel supply has dropped into the reserve range.
  • Refuel.

Engine Oil Level Cannot Be Measured

* The electrical connection to the oil level sensor has been interrupted or the oil level sensor is faulty.
  • Consult a qualified specialist workshop.

Engine Oil Reduce Oil Level

* Display message only for certain engines: The engine oil level is too high.
NOTE Engine damage caused by driving with excess engine oil
  • Avoid long journeys with excess engine oil.
  • Consult a qualified specialist workshop immediately and have the engine oil siphoned off.

Engine Oil Level Low Stop Vehicle Turn Engine Off

* Display message only for certain engines: The engine oil level is too low.
NOTE Engine damage caused by driving with insufficient engine oil
  • Avoid long journeys with insufficient engine oil.
  • Pull over and stop the vehicle safely as soon as possible, paying attention to road and traffic conditions. Do not continue driving under any circumstances.
  • Switch off the engine.
  • Add 1.1 US qt (1 l) engine oil.
  • Check the engine oil level.

Top up engine oil.

Notes on engine oil.

Engine Oil Pressure Stop Switch Off Engine

* Display message only for certain engines: The engine oil pressure is too low.
NOTE Engine damage caused by driving with insufficient engine oil pressure
  • Avoid driving with insufficient engine oil pressure.
  • Pull over and stop the vehicle safely as soon as possible, paying attention to road and traffic conditions. Do not continue driving under any circumstances.
  • Consult a qualified specialist workshop.

Check Engine Oil Level (Add 1 quart)

* Display message only for certain engines: The engine oil level has dropped to the minimum level.
NOTE Engine damage caused by driving with insufficient engine oil
  • Avoid long journeys with insufficient engine oil.
  • When next refueling, add 1 quart of engine oil.

Top up engine oil.

Notes on engine oil.

Check Engine Oil At Next Refueling

* The engine oil level has dropped to the minimum level.
NOTE Engine damage caused by driving with insufficient engine oil
  • Avoid long journeys with insufficient engine oil.
  • Check the engine oil level when next refueling.

Add engine oil.

Notes on engine oil.

    Driving systems

    Transmission

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