Service of Audi A4 from 2001 to 2005 release.
1. Operation and maintenance of the car
1.1. General information
1.2. Keys, locks of doors
1.3. Governing bodies, combination of devices and equipment of interior of the car
1.4. Seats and means of passive safety
1.5. Conditioning and heating
1.6. Driving and service of the car
1.6.1. Launch of the engine
1.6.2. Emergency brake
1.6.3. The help at the parking ahead and behind
1.6.4. System of regulation of speed
1.6.5. Automatic transmission
1.6.6. Klinotsepna variator of "Multitronic"
1.6.7. Operation of "Multitronic"
1.6.8. Electronic system of dynamic stabilization (ESP)
1.6.9. Antiblocking device brake systems
1.6.10. Electronic blocking of differential (EDS)
1.6.11. System of regulation of the drive of driving wheels (ASR)
1.6.12. Amplifier of the steering drive
1.6.13. System servotronik
1.6.14. Four-wheel drive ("Quattro")
1.6.15. The movement with the trailer
1.6.16. Removable traction coupling device
1.6.17. Control of level of oil
1.6.18. Cooling liquid
1.6.19. Rechargeable battery
1.6.20. Windscreen washer
1.6.21. Replacement of a wheel
1.6.22. Lifting of the car
1.6.23. Dismantle / installation of a wheel
1.6.24. Help of launch of the engine
1.6.25. Safety locks
1.6.26. Glow lamps
2. Engine
3. Transmission
4. Running gear
5. Steering mechanism
6. Brake system
7. Onboard electric equipment
8. Body
9. Schemes of electric equipment
 







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1.6.12. Amplifier of the steering drive

The amplifier of the steering drive helps driving at the working engine.
The amplifier of the steering drive facilitates driving. As a result for driving the driver needs to put only small effort.
The amplifier of the steering drive operates only at the working engine. If the engine does not work, it is necessary to put much bigger effort to a steering wheel.
Each full turn of wheels of the motionless car with the working engine is big loading for the amplifier of the steering drive and is followed by noise. Besides, at the same time rotation frequency when idling for a short time decreases.

ATTENTION
The turn of a steering wheel against the stop at the working engine should not continue boley 15 pages. There is a danger of damage of the amplifier of the steering drive

NOTE
At failure of the amplifier of the steering drive or at the movement with the idle engine (towage) controllability the car completely remains. However it is necessary to put bigger effort to a steering wheel.
At violation of tightness or malfunction of system urgently address on the specialized enterprise.

The hydraulic system of the amplifier of the steering drive is filled with special liquid for hydraulic systems. The filling tank is in a forward left part of podkapotny space. Maintenance of normal level of liquid in a filling tank is important for no-failure operation of the hydraulic booster of the steering drive. Level is checked within inspection maintenance.


1.6.11. System of regulation of the drive of driving wheels (ASR)

1.6.13. System servotronik