Disclaimer2000 BMW 328i (E46) Technical Service Bulletin # 641706 Date: 061001
A/C - Blower Motor Malfunctions
SI B 64 17 06
October 2006
Heating and Air Conditioning System
Technical Service
This Service Information bulletin supersedes S.M. B64 204 04 dated July 2004.
SUBJECT
IHKA Blower Output Stage Failure
MODEL
E46 (3 Series)
E83 (X3)
SITUATION
Blower control malfunctions. The fault symptoms indicate a faulty blower output stage.
SITUATION
Blower control malfunctions. The fault symptoms indicate a faulty blower output stage.
517
CAUSE
1. The fault occurs immediately one the air-conditioning control panel is replaced:
Disconnecting the 18-pin connector from the air conditioning control panel during the run-on phase (within 15 minutes of the engine being
switched off or terminal 15 being deactivated) produces a voltage peak in the blower output stage that causes the blower to fail temporarily.
2. Blower output stage faulty
PROCEDURE
Concerning Cause 1:
It is not necessary to replace the blower output stage. It is possible to reactivate the blower output stage by resetting the blower (pulling fuse 50).
Always disconnect terminal 30 before replacing the air-conditioning/automatic air-conditioning control panel. This will prevent voltage peaks in the
blower output stage when the control panel is disconnected.
Concerning Cause 2:
Replace the blower output stage with the current component specified in the EPC.
Caution: It is NO LONGER permitted to fit the component with part number 64 11 6 923 204 to the E46 and E83
WARRANTY INFORMATION
Covered under the terms of the BMW New Vehicle Limited Warranty
Defect Code Refer to KSD
Labor Operation: Refer to KSD
Labor Allowance: Refer to KSD
