B640620

1/4/2021
64 06 20_FIZZING / GURGLING NOISES FROM CENTER VENT IN DASHBOARD
SIB 64 06 20
2020-12-01
FIZZING / GURGLING NOISES FROM CENTER VENT IN DASHBOARD
MODEL
E-Series
F44
Model Description
2 Series Gran Coupe
SITUATION
The Air Conditioning system is cooling the vehicle interior. The customer hears a fizzing / gurgling noise
coming from the center ventilation grille in the vehicle interior.
The noise can be reproduced under the following conditions:
Allow the engine to run in idle
Radio turned off
Air conditioning active
Blower speed 1-2 selected
CAUSE
Gas bubbles in the air conditioning refrigerant circuit are heard as they pass thru the expansion valve.
Uncondensed refrigerant (gas bubbles) can occur due to excessively low operating pressure in the air
conditioning system (i.e., too little refrigerant).
CORRECTION
Wrap the expansion valve piping in butyl tape
Refill refrigerant
PROCEDURE
Check A/C system operation.
If the A/C system is not operational or does not function properly due to other issues then this
SIB does not apply. Check for leaks and repair if and as necessary.
If the A/C system is operational then connect A/C service station.
Draw off (evacuate) refrigerant completely.
If system is slightly low top up to 540 grams (+/- 20 grams)
If system is very low proceed with air conditioning system leak diagnosis/repair prior to refilling
Then reassess the noise.
If the noise can no longer be reproduced, then the vehicle can be returned to the customer
If the noise is still present, proceed as follows.
Remove the evaporator
Observe the repair instructions when removing the evaporatorREP 64 11 197 Remove and install heating and air-conditioning unit
REP 64 51 591 Remove and install/replace evaporator (heating and air-conditioning unit removed)
Wrap butyl tape fully around both evaporator pipes.
Cut the butyl into 30-40 mm sections and leave the backing paper on when you wrap the pipes
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Wrap into a figure 8 pattern, pushing between the pipes so the butyl sticks to itself and fully
surrounds each pipe while making sure to overlap the butyl.
Then remove the paper backing as you complete one wrap around both pipes
This may require up to 2.5 meters of butyl
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Then reassess the noise.
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PARTS INFORMATION
Obtain and confirm the part numbers for your specific vehicle by entering the chassis number in either ETK
or AIR which takes into account specific equipment and/or options.
Part Number
83 19 0 153 321
83 19 2 468 442
83 19 2 446 563
Description
butyl tape (15x1,5 mm x 10 m, 20 g roll)
One 10-meter long roll will repair 4
vehicles
BMW HT-12 Antifreeze Coolant (1 gal)
Refrigerant R1234yf (1 oz)
Quantity
Sublet as needed
Sublet as needed
Sublet if/as needed
WARRANTY INFORMATION
Check the AC system and Refill refrigerant
Leak (Seals, hoses/pipes and/or components)
Incorrectly filled after a prior mechanical repair and/or collision-related work (non-warranty)
Slight and increasing refringent loss over the long-term (non-warranty)
Based which of the above applies, if eligible and covered work is performed after diagnosis, claim this work
with the applicable defect code and the labor operations that are listed in AIR (including diagnosis)
And/or:
Wrapping Expansion Valve Piping with Butyl Tape
Covered under the terms of the BMW New Vehicle Limited Warranty for Passenger Cars and Light Trucks.
Defect Code:
:
Labor
Operation
64 11 197
6451123900
Expansion valve unpleasant noises
Description
Labor Allowance
Removing and installing heating and air-conditioning unit
(Includes removing and installing instrument panel trim and
extract, evacuate and fill air conditioning system) (Main
work)
Refer to AIR
Removing and installing heating and air-conditioning unit
(Includes removing and installing instrument panel trim and
extract, evacuate and fill air conditioning system) (Plus
work – Vehicle is already in the workshop)
Refer to AIR
Diagnosis work time (WT) to verify the noise is still present
(A/C system is refrigerant level is correct) (Vehicle is in the
workshop, prior to heating and air-conditioning unit
removal)
WT
Removing and installing/renewing evaporator (with empty
housing) (heating and air-conditioning unit removed)
Refer to AIR
Job/repair time (WT) to install butyl tape
3 FRU
Or:
64 11 697
And:
64 99 000
And:
64 51 591
And:
64 99 000
If you are using a Main labor code for another repair, use the Plus code labor operation 64 11 697 instead of
64 11 197.
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Note: Only claim labor operation 64 99 000 one time for the applicable total amount of work time.
As applicable to your center, please refer to SI B01 01 20 or B01 07 20 for claiming your diagnosis work
time, job/repair work time (WT), WT and the repair-related explanation procedures.
And, as needed:
Sublet – Bulk Materials (RO and Claim Comments Required)
Sublet Code See the sublet
4
reimbursement
calculations below
Reimbursement for the repair-related bulk materials (Do not
use the BMW part numbers for claim submission)
Sublet reimbursement calculation for claiming the applicable repair-related bulk materials (BMW part
numbers) is at the dealer net price amount for the quantities used plus your center’s handling.
BMW Antifreeze/Coolant: Claim the corresponding sublet dollar amount for the quantity needed to replace
what was drained with a 50/50 coolant/water solution.
Enter this material cost in sublet and itemize the amount on the repair order and in claim comment section.
QUESTIONS REGARDING THIS BULLETIN
Technical inquiries
Warranty inquiries
Parts inquiries
Submit feedback at the top of this bulletin
Submit an IDS ticket to the Warranty Department or use
the chat available in the Warranty Documentation Portal
Submit an IDS ticket to the Parts Department
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