Audi A3

since 1997 of release

Repair and car operation

Audi A3
+ Maintenance instruction
+ Current leaving and service
+ Engine
- Systems of cooling, heating
   + System of cooling of the engine
   + Systems of ventilation, heating and air conditioning
+ the Power supply system and production of the fulfilled gases
+ engine Electric equipment
+ Manual box of gear shifting
+ Automatic transmission and models with a full drive
+ Coupling and power shafts
+ Brake system
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment
+ Elektroskhema


Systems of cooling, heating



General parameters


Separate characteristics are provided also in the text of Head and in case of obligation of their performance are allocated with a bold print

Design Thermosiphon with the lopastny water pump. Thermostatic adjustment. With a separate broad tank. The fan with the vyazkostny coupling. The additional electric fan joins and switched off by a thermoswitch
Cooling liquid mix of soft water (60 %) and antifrizny concentrate (40 %)
Antifrizny concentrate G12 (red color) (do not mix with any other)
System volume
L engines 1.6, 1.8 5.0 l
Concentration of antifreeze in cooling liquid for ensuring frost resistance to
– 35°С 50 %
– 25°С 40 %
Temperature of the beginning of opening 87°С
Temperature of complete opening 102°С
Valve stroke not less than 7 mm
Fan thermoswitch  
Inclusion/switching off of the 1st step 92-97/84-91°C
Inclusion/switching off of the 2nd step 99-105/91-98°C
Stopper of a broad tank
The valve of superfluous pressure opens 1.4–1.6 bar
The valve of depression opens 0.06–0.1 bar
Conditioner coolant
Type R134a
Volume, гр. 750 ± 50
Refrigerator oil
G052 type 154 A2
Volume, cmi 135 ± 15
Efforts of a tightening of carving connections
The moments of an inhaling of fixture are given also in the text of Head and on some иллюстрациях*.

*vydelenny in the text a bold print the moments of an inhaling are subject to exact observance; the efforts not allocated with a bold print are given only roughly
The water pump on the engine
Engines 15 H of m
Thermostat cover 15 H of m
Conditioner compressor 45 H of m