Mercedes S-class W202

1993-2000 of release

Repair and car operation

11.10. Diagnostics of malfunctions of system of a steering

THE GENERAL DATA

THE REASON	WAY OF ELIMINATION
Return (return pushes) on a steering wheel
It is poorly tense or is worn out приводной a pump belt	Replace a belt or adjust its tension.
The steering wheel turns with the big effort
It is poorly tense or is worn out приводной a pump belt	Adjust a belt tension.
Low level of a liquid in a refuelling tank	Add a liquid.
Small number of turns of idling of the engine	Adjust idling turns.
The dirty filter of a refuelling tank	Replace the filter.
Low working pressure of the pump of the hydraulic booster	Repair or replace the pump.
There is air in the hydraulic booster	Check up tightness of consolidations and remove air.
Steering wheel rotation on the average position demands the big effort
Malfunction of the pump of the hydraulic booster	Check up the pump and repair or replace it.
Mechanical malfunction	Check up steering system.
Steering wheel rotation in one of the parties demands the big effort
Malfunction of the pump	Check up the pump and repair or replace its epiploons.
Fast поворачивание a steering wheel demands the big effort
It is poorly tense приводной a pump belt	Adjust a belt tension.
Too small number of turns of idling	Adjust engine work.
In hydrosystem there is air	Find a place подсоса air and remove air.
Malfunction of the pump of the hydraulic booster	Repair or replace the pump.
Mechanical malfunction	Check up mechanisms of system of a steering.
Indistinct work of a steering
Low level of a liquid in a refuelling tank, a liquid leak	Add a liquid and eliminate a leak.
There is air in the hydraulic booster	Check up герметичностьуплотнений and remove air.
Deterioration of details of a steering. The geometry of a steering drive is broken.	Check up a condition of knots and eliminate the found out malfunctions.
Unfitness of tyres	Check up and if necessary replace rubber.
Noise at work
Low level of a liquid in a refuelling tank	Add a liquid, check up absence of a leak.
Liquid dump through a safety valve (a whistling sound at extreme position of a steering wheel)	Establish the reason and remove air. Check up and repair or replace the pump. Check up working pressure of the pump.
Vibration
There is air in the hydraulic booster	Establish the reason and remove air.
Mechanical damage or bad condition of rubber	Reveal unsuitable tyres and replace.

Additional checks for a steering with the microprocessor

THE REASON	WAY OF ELIMINATION
At movement with a great speed поворачивание a steering wheel demands the big effort
Malfunction of the electronic equipment	Address to the expert.
Malfunction of a speedometer	Replace a speedometer or the gauge.
On the big speeds the steering wheel turns too easily
Malfunction of the electronic equipment	Address to the expert.
Malfunction of a speedometer. Leaky connection with weight.	Replace a speedometer or the gauge.
Non-uniformity of effort at steering wheel rotation
Malfunction of the electronic equipment	Address to the expert.
Malfunction of a speedometer	Replace a speedometer or the gauge.