VW Passat repair


+ 1. Ekspluatatsiiya of the car
+ 2. Maintenance
+ 3. Engines
- 4. Cooling system
   4.1. General information
   4.2. Check of tightness of hoses of the cooling system
   4.3. Check of level of cooling liquid
   4.4. Replacement of cooling liquid
   4.5. Washing of the cooling system
   4.6. General control of the cooling system
   - 4.7. Removal and installation of elements of the cooling system
      4.7.1. Radiator
      4.7.2. Thermostat
      4.7.3. Cooling system pump
      4.7.4. Cooling system fan
      4.7.5. Sensor of turning on of the electric fan
      4.7.6. Sensor of temperature of cooling liquid
      4.7.7. Thermorelay of system of injection of fuel
      4.7.8. Replacement of technological caps
      4.7.9. Heater
      4.7.10. Control unit of a heater
+ 5. Power supply system
+ 6. System of ignition
+ 7. Coupling
+ 8. Transmission
+ 9. Drive of forward wheels
+ 10. Suspension brackets
+ 11. Steering
+ 12. Brake system
+ 13. Wheels and tires
+ 14. Systems of heating, ventilation and conditioning
+ 15. Electric equipment
+ 16. Body
+ 17. Electric circuits



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Repair Volkswagen Passat B3-B4/Passat B3-B4>> Cooling system>> Removal and installation of elements of the cooling system>> Control unit of a heater
Carry out removal and installation of the control unit of a heater in the following order:
– disconnect a wire from the negative plug of the rechargeable battery;

Fig. 4.10. Control unit of a heater:
1 – control panel of a heater; 2 – dashboard; 3 – finishing of the control panel


– remove finishing of the control panel 3 (see fig. 4.10 ) a heater;
– remove the central panel 2;
unscrew four screws of fastening, press the heater panel inside and down, and take it from under the dashboard;

Fig. 4.9. Arrangement of cables of management of a heater: 1 – fan cable; 2 – cable of adjustment of temperature; 3 – top cable of distribution of a stream of air; 4 – lower cable of distribution of a stream of air


– disconnect cables (see fig. 4.9 ) managements of a heater, having noted their arrangement and connection to levers;
You make installation of the removed elements in the sequence, the return to removal.