64 12 670 Replacing Electric Auxiliary Heater -Front-

64 12 670 Replacing Front Electric Auxiliary Heater







Necessary preliminary work:
- Remove support for dashboard







NOTE: For purposes of clarity, the following graphics show the heating and air-conditioning unit removed.







Disconnect plug connection (1).







Release screws (1).
Lay servomotor (2) to one side.







Release screws (1).







Release screws (2) and remove housing side section (2).







Disconnect plug connection (1).
Release screw (2).
Pull out electric auxiliary heater (3) and detach associated earthing cable (4).

Installation note:
Make sure earthing cable (4) is securely seated.







IMPORTANT: On vehicles with production date up to 03/2010 it is essential in the case of spare parts to observe the part number of the auxiliary heater.

In the case of the following part numbers no additional work is necessary:
- 6 968 178
- 9 151 309
- 9 185 403

These part numbers may no longer be installed in vehicles with production date from 03/2010.
For vehicles with production dates up to 03/2010 and all other part numbers programming/encoding must be carried out.
In addition, perform conversion in the diagnosis system via path:
- Retrofit Electric Auxiliary Heater/Retrofitting Electric Heater

Vehicles that have production dates after 03/2010 and all other part numbers do not require any additional work.