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190 (W201) (1982-1993) W202 (1993-2000) W203 (2000-2007)
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  • General information
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  • If the engine does not start

If the engine does not start (Mercedes-Benz C-Class W201)

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Contents: If the engine does not start and the…↡ If the engine does not start,…↡

If the engine does not start and the starter does not rotate



If this is a model with an automatic transmission, make sure the selector is in the "P" or "N" position.

Open the hood and make sure the battery terminal clamps are clean and tight.

Turn on the headlights and try to start the engine. If the headlights dim noticeably when you turn on the starter, then most likely the battery is discharged. Get out of the situation by starting the engine from another battery, for example from your friend's car (see next page).

If the engine does not start, although the starter works normally



Is there fuel in the tank?

Are the electrical components under the hood damp? Turn off the ignition and wipe any visibly damp areas with a dry cloth. Spray with a water-absorbing aerosol (WD-40 or equivalent) to the ignition control and fuel system electrical circuit connectors as shown in the photographs. Pay particular attention to the ignition coil circuit connectors and high-tension wire.

A. Make sure the spark plug high tension wires are making good contact. Adjust them on the plugs…

A. Make sure the spark plug high tension wires are making good contact. Adjust them on the plugs (shown is a 4-cylinder petrol model).


B. Check that the high-voltage wires are securely connected to the distributor (4-cylinder petrol…

B. Check that the high-voltage wires are securely connected to the distributor (4-cylinder petrol model shown).


C. Make sure the high-tension wires are securely connected to the ignition coil (4-cylinder petrol…

C. Make sure the high-tension wires are securely connected to the ignition coil (4-cylinder petrol model shown).


Check the reliability of electrical connections (with ignition off) and if the humidity is high,…

Check the reliability of electrical connections (with ignition off) and if the humidity is high, spray a water-absorbing aerosol such as WD-40.


D. Make sure the high-voltage wire connections are clean and, if necessary, remove moisture with an…

D. Make sure the high-voltage wire connections are clean and, if necessary, remove moisture with an aerosol.


E. Check the reliability and condition of the battery connections.

E. Check the reliability and condition of the battery connections.
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C-Class 190 (W201) / Operation and care
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Specific hazards
Main dangers
Your Mercedes 190 Owner's Manual
Mercedes 190: Introduction
Starting the engine from an external battery
Wheel replacement
What do the smudges mean?
Towing a car
Weekly Checks: Introduction
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W203 (2000-2007) 
  • General information
  • Introduction to guide
  • User manual
  • Maintenance
  • Power unit
  • Gasoline engines
  • Diesel engines
  • Cooling system
  • Ventilation and heating
  • Supply system
  • Injection system (gasoline)
  • Injection system (diesel)
  • Exhaust system
  • Ignition and control system
  • Charge and launch systems
  • Transmission
  • Mechanical gearbox
  • Automatic gearbox
  • Clutch and drive shafts
  • Differential
  • Chassis
  • Brake system
  • Car suspension
  • Steering
  • Body
  • Exterior (external elements)
  • Interior (internal elements)
  • Electrical equipment
  • Equipment and devices
  • Lighting system
  • Electrical diagrams (2000)
  • Electrical diagrams (since 2001)
W202 (1993-2000) 
  • General information
  • User manual
  • Driving a car
  • Car care
  • Maintenance
  • Power unit
  • Gasoline engines
  • Diesel engines
  • Lubrication system
  • Cooling system
  • Heating and ventilation
  • Ignition system
  • Fuel system
  • Injection system (gasoline)
  • Injection system (diesel)
  • Exhaust system
  • Transmission
  • Clutch
  • Car gearbox
  • Chassis
  • Suspension, wheels and tires
  • Steering
  • Brake system
  • Body
  • Exterior (external elements)
  • Interior (internal elements)
  • Doors and windows
  • Electrical equipment
  • Equipment and devices
  • Power devices
  • Lighting system
  • Electrical circuits
190 (W201) (1982-1993) 
  • General information
  • Introduction to the guide
  • Operation and care
  • Maintenance (gasoline)
  • Maintenance (diesel)
  • Troubleshooting
  • Power unit
  • Petrol engine I4
  • Petrol engine V6
  • Diesel engines
  • Engine overhaul
  • Cooling and heating
  • Power system (carburetor)
  • Injection system (gasoline)
  • Injection system (diesel)
  • Exhaust system
  • Charge and start system
  • Ignition system (I4)
  • Ignition system (V6)
  • Diesel heating system
  • Transmission
  • Clutch
  • Mechanical gearbox
  • Automatic gearbox
  • Cardan shaft and axle shafts
  • Chassis
  • Brake system
  • Car suspension
  • Steering
  • Body
  • Exterior (external elements)
  • Interior (internal elements)
  • Doors, locks and windows
  • Electrical equipment
  • Equipment and devices
  • Electrical circuits
 
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