Car troubleshooting Mercedes 190 (W201)

Troubleshooting: Introduction
A car owner who follows the standard service intervals will not have to use this section of the manual very often. The reliability of branded parts is such that if parts...

Engine malfunctions
Engine does not turn over when trying to start The battery contacts are loose or oxidized (" Weekly check "). The battery is discharged or defective ( Chapter 5A )....

Cooling system malfunctions
Overheat Insufficient amount of coolant in the system ( Weekly check ). Thermostat is faulty ( Chapter 3 ). The radiator or radiator grille is clogged ( Chapter 3 ). The...

Clutch faults
The pedal drops to the floor with very little resistance Low fluid level or air in the clutch release hydraulic system ( Chapter 6 ). The release bearing or clutch...

Manual Transmission Malfunctions
Noise in neutral position with engine running Wear of the input shaft gears and gearbox bearings (noise when the clutch pedal is depressed, not pressed) ( Chapter 7A ).*...

Automatic transmission faults
Note: Due to the complexity of the automatic transmission, it is not possible to perform a functional check or repair in a garage environment. For problems not described...

Differential and propeller shaft faults
Vibration when decelerating or accelerating Cardan joint wear ( Chapter 8 ). The driveshaft is bent, warped or unbalanced ( Chapter 8 ). A low squeal that gets louder as...

Brake system malfunctions
Note: To confirm that the brake system is the problem, make sure that the tires are in good condition and properly inflated, that the front wheel alignment is within the...

Suspension and steering system faults
Note: Before diagnosing suspension or steering problems, make sure tire pressures are correct, tires are the same type, and brakes are in good condition. The car pulls...

Electrical system faults
Note: Solutions to problems related to the starting system are described above - in the list called " Engine " in this section. The battery runs out in a few days...

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190 (W201) (1982-1993)