A/C Center Vents - Low/No Air Flow
Group 64Heating and Air Conditioning
Bulletin Number
64 08 01
Woodcliff Lake, NJ
October 2001
service Engineering
SUBJECT
E46 with IHKR: Incorrect Air Distribution from Center Vents
MODEL
E46, 3 Series produced 09/00 - 08/01 with IHKR System
SITUATION
Customer may complain of reduced (or not existing) airflow from the center vents when the air distribution knob is directly positioned at the "face vents", and ignition has been switched ON.
Proper function of the IHKR is restored when the distribution knob is slowly rotated through the full range (360 deg) of operation. This rotation (which forces IHKR into the calibration mode) should take approx. 1 minute from start to finish.
CAUSE
Software error in IHKR control module.
CORRECTION
On a customers complaint basis only, replace IHKR module with an improved version (SW 12.0) part number 64 11 6 911 632. For IHKR replacement procedure, refer to RA 64 11 749.
PARTS INFORMATION
Part Number Description Quantity
64 11 6 911 632 IHKR control 1
module
WARRANTY INFORMATION
Covered under the terms of the BMW New Vehicle Limited Warranty.
DISCLAIMER