BMW 1999-2005 M3 Service Manual page 1157

Heating and Air Conditioning
3 of 9
http://ebahn.bentleypublishers.com/BMW/3/E46/Repair%20Manuals/6...
Working at rear engine compartment
bulkhead, loosen hose clamps
(arrows) and detach heater hoses.
- Blow out excess coolant from
heater core using compressed air
at coolant lines.
Release right air duct from IHKA
-
housing.
Working inside passenger
compartment at IHKA housing:
Detach wiring harness (A) from
housing.
Remove heater core temperature
sensor (B) by pulling straight out.
Remove retaining clips (C) from
housing cover.
Lift off front of cover, then unhook
tabs from housing at rear.
Remove coolant pipe retaining clamps
mounting screws (arrows).
To remove heater core from IHKA
housing:
Remove coolant pipe retainers
2/25/2009 11:17 PM