NHTSA ID Number: 10147949
Manufacturer Communication Number: 640613
TSB/Document Date: 2018-11-13
Summary
?SI B64 06 13 January 2014 Body EquipmentTechnical Service This Service Information bulletin supersedes SI B64 06 13 dated November 2013. designates changes to this revision SUBJECT A/C Cooling: Intermittent Reduction of Air Flow. The customer may complain of reduced air flow when the air conditioning system is operated for an extended time, usually longer than one hour. The complaint can vary due to one or more of the following variables: * High outside ambient temperature * Too much humidity * A/C temperature and fan settings set too low for too long Note: It is very difficult to duplicate this issue due the required outdoor weather conditions and length of driving time needed. CAUSE Evaporator starts to freeze up due to the position of the evaporator temperature sensor
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TSB/Document ID: 640613
Replacement Service Bulletin Number:
MFR Communication Date: 2014-01-01
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: ENGINE AND ENGINE COOLING
MFR Component System:
MFR Component Subsystem:
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Page 1 of 5
SI B64 06 13
Body Equipment
January 2014
Technical Service
This Service Information bulletin supersedes SI B64 06 13 dated November 2013.
designates changes to this revision
SUBJECT
A/C Cooling: Intermittent Reduction of Air Flow
MODEL
F30
F31
F32
F34
Produced from July 4, 2012 to September 2, 2013
SITUATION
The customer may complain of reduced air flow when the air conditioning system is operated for
an extended time, usually longer than one hour.
The complaint can vary due to one or more of the following variables:
High outside ambient temperature
Too much humidity
A/C temperature and fan settings set too low for too long
Note: It is very difficult to duplicate this issue due the required outdoor weather conditions and
length of driving time needed.
CAUSE
Evaporator starts to freeze up due to the position of the evaporator temperature sensor
PROCEDURE
Check the air conditioning for correct operation.
The fault can be reproduced under the following conditions:
Air-conditioning system switched on
Driving Experience switch NOT set to Eco Pro
Mainly at lower fan speeds
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Temperature setting below 68°F (20°C)
Trip duration at least 30 minutes
Outside temperature above 68°F (20°C)
After parking the vehicle or switching off the air-conditioning system for at least 20 minutes, the
symptom disappears. However, this can occur again if the air-conditioning system is reactivated
and a longer drive lasting at least 30 minutes takes place.
Note: After stopping/parking the car or turning off the A/C, the ice will begin to melt off the
evaporator and create a puddle under the car from the A/C drains. After the ice melts, normal A/C
operation will be restored.
1. Refer to Repair
Instruction 51 45
195 and remove
the passenger
side footwell
cover trim.
2. With the footwell
panel removed,
locate the
evaporator
temperature
sensor opening
(sensor removed
for clarity). Note
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
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Page 3 of 5
case, proceed
with normal A/C
diagnostic
procedures.
3. If no gap exists
and the sensor
opening contact
surface is not
angled as shown,
the IHKA
housing must be
modified. Do not
replace any
parts. The
repair
procedure
includes
installing a new
adapter to
correct the gap
of the sensor as
shown in the
next steps.
4. Also, if a yellowcolored marking
exists on the
sensor
connection, the
new adapter must
be installed.
Refer to Repair
Instruction 64 11
943 and remove
the evaporator
temperature
sensor.
5. Insert the new
adapter firmly
into the sensor
opening, as
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shown.
6. Insert the sensor
through the
opening in the
adapter, and then
install all
removed parts in
the reverse order
of their removal.
PARTS INFORMATION
Part Number
Description
Quantity
64 11 9 350 495
Evaporator temperature sensor adapter
1
WARRANTY INFORMATION
Covered under the terms of the BMW
New Vehicle/SAV Limited Warranty.
Defect Code:
64 51 13 40 00
Labor Operation:
Labor Allowance:
Description:
64 99 000
4 FRUs
Work time to check IHKA housing and
install the sensor adapter (Main work)
or
Work time to check IHKA housing and
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64 99 000
2 FRUs
install the sensor adapter (Plus work,
vehicle already in the workshop)
Refer to KSD2
Removing and installing evaporator
temperature sensor
and
64 11 943
Since the “work time” FRU allowance is specified for labor operation 64 99 000, a separate punch
time is not required.
[ Copyright ©2014 BMW of North America, Inc. ]
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