Air Conditioning System Has A Musty Odor (SI B64 04 03)

AIR CONDITIONING SYSTEM HAS A MUSTY ODOR

SERVICE CAMPAIGN BULLETIN

SERVICE INFORMATION

This Service Information Bulletin (Revision 5) replaces SI B64 04 03 dated July 2018. 

What's New  (Specific text highlighted):

• Procedure - Adding new models G20, G22, G23, G29

SITUATION

A musty odor is noticed coming from the heating and air conditioning system.

CAUSE

Certain environmental conditions may cause microbial contamination on the evaporator which can produce a musty odor when the air conditioning system is used.

CORRECTION

Clean the evaporator.

PROCEDURE

For conditions that are similar to the situation described, the best option, if available, is to spray a disinfectant under high pressure directly onto the evaporator:

1. Before any cleaning procedure is carried out, the following points should be taken into consideration:
   • Inspect the microfilters and replace as necessary
   • Inspect the microfilter housing water drains for clogging and clean as necessary
   • Some vehicles have recirculating air filters that need to be inspected and replaced as necessary
   • Make sure the evaporator housing drains are not clogged
   • Verify the source of the odor. Other issues that may cause an odor are:
   • Vehicle interior carpet may be soaked because of a water leak
   • Water may have leaked into the trunk
   • Other strong-smelling items may be in the vehicle interior or trunk
2. Check the following table for the model under service.

   Model	Special Tool (Spray Lance) Order Part Number	ISTA repair instruction
   E65/E66	83 30 0 495 515	REP 64 51 001 "Cleaning evaporator
   E60/E61/E63/E64	83 30 0 494 833	REP 64 51 001 "Cleaning evaporator
   E85/E86	83 30 0 494 840	REP 64 51 001 "Cleaning evaporator
   E82/E88/E90/E91/E92/E93	83 30 0 494 960	REP 64 51 001 "Cleaning evaporator
   E70/E71/E72/F15/F16	83 30 0 495 534	REP 64 51 001 "Cleaning evaporator
   F01/F02/F04/F06/F07/F10/F12/F13/G01/G02/G20/G22/G23/G29	83 30 2 222 502	REP 64 51 001 "Cleaning evaporator
   F22/F23/F25/F26/F30/F31/F32/F33/F34/F36/F80/F82/F83	83 30 2 344 001	REP 64 51 001 "Cleaning evaporator
   I01	83 30 2 413 653	REP 64 51 001 "Cleaning evaporator
   G12/G30/G32	83 30 2 411 757	REP 64 51 001 "Cleaning evaporator
   E39/E46/E53/E83	83 30 0 493 893	REP 64 51 001 "Cleaning evaporator

   Was a part number found for the Special tool required for application of the disinfectant directly onto the evaporator of this model? 

   YES  - using the tool specified, follow the REP "Clean the Evaporator" for this model found in ISTA.

   NO  - go to the next step.

3. Vehicles without a specified spray lance can be cleaned with an ultrasonic cleaner from Wynn's. Follow the attached "Ultrasonic Evaporator Cleaning" procedure.

PARTS INFORMATION

Part Number	Description	Quantity
81 45 9 429 217	Spray Gun	If needed
83 19 2 180 507	Air Conditioning Cleaner (use w/lance only) (1000 ml)	As needed

The cleaning Part number 83 19 2 180 507 can be ordered from EXCELDA:

CLAIM INFORMATION

This service information bulletin provides technical, diagnostic and/or repair-related information.

The condition described in this bulletin is influenced by environmental and other external factors (dust, pollen, smoking, pets, etc.), therefore, corresponding repairs are not covered under the BMW limited warranties.

QUESTIONS REGARDING THIS BULLETIN

Technical inquiries	Submit feedback at the top of this bulletin
Warranty inquiries	Please contact the Warranty department by either using the Live Chat that's available in the Warranty Documentation Portal or through IDS by selecting Coverage, Policy, Coding Questions and Mileage Corrections
Parts inquiries	Submit an IDS ticket to the Parts Department

Supporting Materials

picture as pdf B64 04 03 Attachment-Ultrasonic Evaporator Cleaning.pdf