Removal and installation the heater radiator (BMW 7 Series E38)

Models with integrated heating and air conditioning systems

1. Remove the top engine cover.

2. Remove the hoses (1) cooling system on the engine compartment bulkhead. Carefully blow out the connections to remove any remaining coolant from the radiator.

3. Remove the storage box, lower steering column cover and front footwell trim (see chapter Suspension and steering). Remove the left footwell air duct.



4. Remove the screws and set the holder aside.



5. Unscrew the bolts and remove the tubes.

Replace the tube sealing rings when installing.

6. Loosen the screws and remove the heater radiator cover.





7. Remove the heating element.

Models with automatic K/V system

1. Remove the top engine cover.

2. Remove the hoses (1) cooling system on the engine compartment bulkhead. Carefully blow out the connections to remove any remaining coolant from the radiator.

3. Remove the glove box (see chapter Body).

4. Remove the steering column (see chapter Suspension and steering).

5. Remove the left side trim and the left stiffener (see chapter Body).



6. Remove the left and right footwell air ducts.







7. Remove the left and right rear air ducts.

8. Remove the right and left footwell air vent servos. Set the vent to a roughly horizontal position and hang up the lever mechanism.







9. Remove the screws (1), loosen the nut (2) and remove the left and right holders.





10. Release the fastening bracket and remove the temperature sensor. Cut the clamp fastening the electrical harness on the cover.

Use new clamps when installing.

11. Remove the brackets and remove the radiator cap.



12. Remove the screws (1) and take out the radiator (2).

Replace the sealing rings when installing.

13. When replacing the heating element, remove the retaining clips and reroute the wires.

14. Installation is carried out in reverse order.

Rear passenger compartment heater radiator

1. Remove the front and rear storage compartments (see chapter Body).



2. Clamp the hoses (1). Loosen the union nuts (2) and disconnect the coolant pipes without disconnecting the refrigerant lines.

Replace the sealing rings when installing.

3. Remove the insulating material on the water valve. Loosen the bolts (1) and remove the water valve (2) with the supply hose.

In the illustration, the heating and air conditioning unit is shown removed for greater clarity, but it does not need to be removed.

4. Unscrew the bolts (1) and remove the radiator (2) with the drain pipe from the housing.