2000 BMW 328i (E46) Technical Service Bulletin # 640698 Date: 011001

2000 BMW 328i (E46) Technical Service Bulletin # 640698 Date: 011001

A/C - Intermittent Blower Motor Operation

Group 64

Heating and Air Conditioning

Bulletin Number

64 06 98

Woodcliff Lake, NJ

October 2001

Service Engineering

This Service Information bulletin supersedes S.I. 64 06 98 dated February 1999.

SUBJECT

Intermittent IHKA Blower Operation

MODEL

E46 produced prior to 06/2000

SITUATION

The IHKA blower will intermittently cut out. The IHKA LCD display will indicate that the blower is operating even though the blower is not

functioning.

CAUSE

IHKA final stage resistor (blower regulator).

CORRECTION

On a customer complaint basis only, replace the IHKA final stage resistor with an improved part (P/N 64 11 8 385 549).

PROCEDURE

152

1. The IHKA blower final stage resistor (2) is located behind the right side footwell vent duct (1).

2. Remove the glove box (1) and rear trim panel (2) to access the area behind the duct (3).

3. Remove the two attaching screws from the stepper motor (1) bracket and carefully disconnect the flap rod from the stepper motor arm.

Remove the stepper motor to access the final stage resistor (2).

4. Remove the connector from the final stage resistor and the two attaching screws (1). Remove the IHKA blower final stage resistor and replace

it with the improved PN 64 11 8 385 549.

5. Reinstall all components and ensure the stepper motor rod is securely fastened in the clip.

PARTS INFORMATION

153

Part Number Description Quantity

64 11 8 385 549 IHKA final stage 1

blower resistor

WARRANTY INFORMATION

Covered under the terms of the BMW New Vehicle Limited Warranty.