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64 06 13_A/C COOLING: INTERMITTENT REDUCTION OF AIR FLOW

SIB 64 06 13
A/C COOLING: INTERMITTENT REDUCTION OF AIR FLOW

2019-08-26

This Service Information Bulletin (Revision 9) supersedes SI B64 06 13 dated June 2017.
What’s New:
• Model F36 (4 Series Gran Coupe) added

MODEL
F22 (2 Series Coupe)
F32 (4 Series Coupe)
F80 (M3 Sedan)

F23 (2 Series
Convertible)
F33 (4 Series
Convertible)
F82 (M4 Coupe)

F30 (3 Series Sedan)
F34 (3 Series Gran
Turismo)
F83 (M4 Convertible)

F31 (3 Series Sports
Wagon)
F36 (4 Series Gran
Coupe)

Produced from July 5, 2012 thru the respective end of production.

SITUATION
Customer may complain of reduced air flow when the air conditioning system is operated for an extended
time, usually longer than 30 minutes.

CAUSE
The evaporator starts to freeze up due to the position of the evaporator temperature sensor.

CORRECTION
Install a new evaporator temperature sensor adapter or perform a conversion in ISTA/P.

PROCEDURE
Repair procedure for vehicles produced to September 30, 2013:
Use Repair Instructions REP 64 11 943

1. Remove the passenger’s side footwell cover
trim (the bottom instrument panel trim).

2. Remove both screws at connection (1).
Note: With the knee airbag, also remove both nuts
(1).
Tightening torque is 5Nm.
Release the trim panel (2) at clamps (3).

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Feed out the trim panel (2) in area (A) toward the
bottom.
Lower the trim panel (2) slightly and disconnect the
plug connections behind it.

3. Disconnect the plug connection (2).
Unclip the evaporator temperature sensor (1)
with special tool 00 9 327 from the heating and
air conditioning unit (3), and remove.
Installation note:
Ensure the evaporator temperature sensor (2) is
correctly seated.

4. The IHKA housing (removed for clarity)
shown is viewed from the passenger’s side.
The circle shows the approximate location of the
evaporator temperature sensor.

5. The close-up picture shows the exact
location (circle) of the sensor opening. The
following steps will be performed from the lower
passenger’s footwell area at the bottom of the
IHKA housing.
Note: As a reference point, the evaporator
temperature sensor is located just above the
white ribbed rubber water drain hose, when
viewed from below.
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6. Locate the evaporator temperature sensor
opening (sensor removed for clarity).
Check the gap between the sensor opening and
the evaporator case.
If the sensor opening contact surface is slightly
angled as shown, this housing is NOT affected
by this repair procedure. In this case, proceed
with normal A/C diagnostic procedures.
If no gap exists proceed to the next step.

7. Check for a marking on the electrical
connector.
If a mark is seen or NO gap exists, the IHKA
housing must be modified.
Do not replace any parts. The repair
procedure includes installing a new adapter
to correct the gap.

8. Insert the new adapter firmly into the sensor
opening, as shown.
Note: The arrow shows the slot in the adapter
that is properly fitted into the raised rib of the
housing.

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9. Insert the temperature sensor through the
opening in the adapter, and push in firmly.
Note: The temperature sensor is keyed and will
only fit one way.
Installation note:
Ensure the evaporator temperature sensor is
correctly seated.

Install all removed parts in the reverse order of
their removal.

Repair procedure for vehicles produced from October 1, 2013:
Perform a conversion in ISTA/P “Activate conversion to raise the minimum evaporator temperature”.

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
64 11 9 350 495

Description
Evaporator temperature sensor adapter

Quantity
1

WARRANTY INFORMATION
Covered under the terms of the BMW New Vehicle Limited Warranty for Passenger Cars and Light Trucks.
Defect Code:

6411794000

Labor Operation:
64 99 000

Labor Allowance:
4 FRU

Description:
Work time to check IHKA housing and install the
evaporator temperature sensor adapter (Main work)

Or:
64 99 000

2 FRU

Work time to check IHKA housing and install the
evaporator temperature sensor adapter (Plus work vehicle already in the workshop)

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Or for:
Vehicles produced on or after October 1, 2013.
Covered under the terms of the BMW New Vehicle Limited Warranty for Passenger Cars and Light Trucks or
the BMW Certified Pre-Owned Program.
Defect Code:

6400315900

Labor Operation:
00 00 006

Labor Allowance:
Refer to KSD2

Description:
Performing “vehicle test” (with vehicle diagnosis
system – checking faults) (Main work)

Or:
00 00 556

Refer to KSD2

Performing “vehicle test” (with vehicle diagnosis
system – checking faults) (Plus work)

And:
61 21 528

Refer to KSD2

Connect an approved battery charger/power
supply(indicated in KSD2 as “Charging battery”)

And:
61 00 730

Refer to KSD2

Programming / encoding control unit(s)

If you are using a Main labor code for another repair, use the Plus code labor operation 00 00 556 instead of
00 00 006.
Refer to KSD2/AIR for the corresponding flat rate unit (FRU) allowances.
Vehicle Programming and Coding
ISTA automatically reprograms and codes all vehicle control modules that do not have the latest software. If
one or more control module failures occur “during” this programming procedure:
Please claim this “consequential” control module-related repair work under the defect code listed in
this bulletin with the applicable KSD2/AIR labor operations.
Other Repairs
Control module failures that occurred “prior” to performing this programming procedure:

When “covered” under an applicable limited warranty, claim this control module-related repair
work using the applicable defect code and labor operations in KSD2/AIR.

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