Car troubleshooting Mercedes E-Class (W124)

Engine diagnostics and troubleshooting
The engine crankshaft does not rotate or rotates very slowly when the engine is started with the starter Poor battery terminal connection. The battery is discharged or...

Diagnostics and troubleshooting of the cooling system
Engine overheating Insufficient fluid level in the cooling system. The thermostat is not working. The internal cavities of the radiator are clogged. The radiator fan or...

Diagnostics of fuel and exhaust system faults
Increased fuel consumption The air filter element is dirty. Low tire pressure in the car. On models with petrol engines with a carburetor, the throttle mechanism is...

Diagnosis and troubleshooting of clutch problems
The clutch pedal is easy to press or sinks Low fluid level in the clutch hydraulic system. Damage to the release bearing or clutch release fork. The diaphragm spring of...

Diagnostics of faults of a manual transmission
Noise when driving with the gearshift lever in neutral Wear of gearbox input shaft bearings (the noise disappears when the clutch pedal is pressed). Release bearing wear...

Automatic transmission fault diagnostics
Warning: Because the transmission is a very complex unit, it is difficult to diagnose and repair a fault in the transmission. Do not remove the transmission from the...

Diagnostics of differential and propeller shaft faults
Vibration occurs when accelerating or decelerating The universal joint of the cardan shaft is worn out. The cardan shaft is out of balance. Noise increases with...

Diagnostics and troubleshooting of the brake system
Attention! Before determining a fault in the brake system, check the front wheel alignment angles, tire condition and tire pressure. If there are faults in the anti-lock...

Diagnosis of suspension and steering faults
Caution: Before determining a fault with the suspension or steering, check the tire pressure, the absence of wheel drag, and that the vehicle has identical tires. The...

Diagnostics of electrical equipment faults
The battery does not hold a charge for long Battery failure due to plate shedding. The battery terminals are loose or corroded. Auxiliary drive belt worn or improperly...

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W210 (1996-2002)

W124 (1984-1995)