Table of contents: Cars without independent heater ↓ Car with independent heater ↓
Cars without independent heater
Note: Blue = large cooling circuit. Red = small cooling circuit. Orange = EGR cooling circuit. Brown = heating circuit.
P. I 1. Coolant radiator: after replacement, change the coolant; 2. Ventilation plug; 3. Thermostat; 4. EGR radiator pump "V400"; 5. Oil radiator; 6. Cylinder head, row 1 (right): after replacement, change the coolant; 7. Coolant shut-off valve: vacuum-pressure-controlled coolant shut-off valve for Climatronic "N422"; 8. Ventilation hole; 9. Heater heat exchanger: after replacement, change the coolant; 10. Coolant temperature sensor "G62"; 11. Ventilation plug; 12. EGR radiator: change coolant after replacement; 13. EGR changeover valve; 14. Expansion tank cover; 15. Expansion tank; 16. Cylinder head, row 2 (left): change coolant after replacement; 17. Exhaust gas recirculation system thermostat: with an executive electric motor of the exhaust gas recirculation system; 18. Coolant pump; 19/20. Check valve: arrow shows the direction of flow; 21. Additional radiator: option for the national market; after replacement, change the coolant
Car with independent heater
P. II 1. Coolant radiator: after replacement, change the coolant; 2. Ventilation plug; 3. Thermostat; 4. EGR radiator pump "V400"; 5. Autonomous heater; 6. Oil radiator; 7. Cylinder head, row 1 (right): after replacement, change the coolant; 8. Check valve: the arrow shows the direction of flow; 9. Heater coolant shut-off valve "N₂79"; 10. Ventilation hole; 11. Heater heat exchanger: after replacement, change the coolant; 12. Coolant temperature sensor "G62"; 13. Ventilation plug; 14. EGR radiator: change coolant after replacement; 15. EGR changeover valve; 16. Expansion tank cover; 17. Expansion tank; 18. Cylinder head, row 2 (left): after replacement, change the coolant; 19. Exhaust gas recirculation system thermostat: with an executive electric motor of the exhaust gas recirculation system; 20. Coolant pump; 21/22. Check valve: arrow shows the direction of flow; 23. Additional radiator: option for the national market; after replacement, change the coolant