Mercedes of the S-class W202

1993-2000 of release

Repair and operation of the car

Mercedes W202
+ 1.2. General information
+ 2. Maintenance
+ 3. Engines
+ 4. Lubrication system
+ 5. Cooling system
+ 6. Heating, ventilation
+ 7. System of ignition
+ 8. Fuel system
+ 9. Transmission
+ 10. Running gear
- 11. Steering
   11.2. The block of an inflatable safety cushion on a steering wheel
   11.3. Steering wheel
   11.4. Steering trapeze
   11.5. Cuffs of hinges of a steering trapeze
   11.6. Power steering pump
   11.7. Installation of disorder convergence
   11.8. Easily and easy
   11.9. Maintenance of system of steering
   11:10. Diagnostics of malfunctions of system of steering
+ 12. Brake system
+ 13. Body
+ 14. Electric equipment
+ 14.2. Electrical circuitries

11:10. Diagnostics of malfunctions of system of steering

GENERAL INFORMATION

REASON	WAY OF ELIMINATION
Return (the return pushes) on a steering wheel
The driving belt of the pump is poorly tense or worn-out	Replace a belt or adjust its tension.
The steering wheel turns with big effort
The driving belt of the pump is poorly tense or worn-out	Adjust a belt tension.
Low level of liquid in a filling tank	Add liquid.
Small speed of idling of the engine	Adjust idling turns.
Dirty filter of a filling tank	Replace the filter.
Low working pressure of the pump of the hydraulic booster	Repair or replace the pump.
There is an air in the hydraulic booster	Check tightness of consolidations and remove air.
Rotation of a steering wheel on average situation demands big effort
Malfunction of the pump of the hydraulic booster	Check the pump and repair or replace it.
Mechanical malfunction	Check system of steering.
Rotation of a steering wheel in one of the parties demands big effort
Malfunction of the pump	Check the pump and repair or replace its epiploons.
Bystry turning of a steering wheel demands big effort
The driving belt of the pump is poorly tense	Adjust a belt tension.
Too small speed of idling	Adjust operation of the engine.
In a hydraulic system there is an air	Find the place of a suction of air and remove air.
Malfunction of the pump of the hydraulic booster	Repair or replace the pump.
Mechanical malfunction	Check mechanisms of system of steering.
Indistinct work of steering
Low level of liquid in a filling tank, a liquid leak	Add liquid and eliminate a leak.
There is an air in the hydraulic booster	Check germetichnostyuplotneniye and remove air.
Wear of details of steering. The geometry of the steering drive is broken.	Check a condition of knots and eliminate the found malfunctions.
Unfitness of tires	Check and if necessary replace rubber.
Noise during the work
Low level of liquid in a filling tank	Add liquid, check lack of a leak.
Dumping of liquid via the safety valve (the whistling sound at the extreme provision of a steering wheel)	Establish the reason and remove air. Check and repair or replace the pump. Check the working pressure of the pump.
Vibration
There is an air in the hydraulic booster	Establish the reason and remove air.
Mechanical damage or bad condition of rubber	Reveal unsuitable tires and replace.

Additional checks for steering with the microprocessor

REASON	WAY OF ELIMINATION
At the movement with high speed turning of a steering wheel demands big effort
Malfunction of the electronic equipment	Address the expert.
Malfunction of a speedometer	Replace a speedometer or the sensor.
At big speeds the steering wheel turns too easily
Malfunction of the electronic equipment	Address the expert.
Malfunction of a speedometer. Leaky connection with weight.	Replace a speedometer or the sensor.
Unevenness of effort at rotation of a steering wheel
Malfunction of the electronic equipment	Address the expert.
Malfunction of a speedometer	Replace a speedometer or the sensor.