NHTSA ID Number: 10133955
Manufacturer Communication Number: L-SB-0146-11 Rev
TSB/Document Date: 2018-04-23
Summary
Under certain climatic conditions, some vehicles may exhibit an unpleasant odor coming from the face level HVAC vents during the initial 10 ? 30 seconds of HVAC system operation. An HVAC Amplifier is now available with updated logic that will direct air away from the face level vents under certain temperature conditions during the first 10 ? 30 seconds of HVAC operation.
L-SB-0146-11
Rev1
December 8, 2011
HVAC Odor
Service
Category
Vehicle Interior
Section
Heating/Air Conditioning
USA
Market
Applicability
YEAR(S)
MODEL(S)
2008 – 2011
GS350, GS460
2011
IS F, IS250, IS350
2010 – 2011
IS250C, IS350C
ADDITIONAL INFORMATION
REVISION NOTICE
December 3, 2012 Rev1:
• The Introduction section has been updated.
• The Parts information section has been updated.
Any previous printed versions of this bulletin should be discarded.
Introduction
Under certain climatic conditions, some vehicles may exhibit an unpleasant odor coming from the
face level HVAC vents during the initial 10 – 30 seconds of HVAC system operation. An HVAC
Amplifier is now available with updated logic that will direct air away from the face level vents under
certain temperature conditions during the first 10 – 30 seconds of HVAC operation.
This bulletin does NOT apply if the vehicle exhibits the following conditions:
• The unpleasant odor continues after the initial 10 – 30 seconds of HVAC system operation.
• The unpleasant odor does not begin immediately after the HVAC system is turned ON.
• The unpleasant odor is present with the HVAC system OFF.
© 2012 Lexus
, a division of Toyota Motor Sales, USA
Page 1 of 5
L-SB-0146-11
Rev1
December 8, 2011
Page 2 of 5
HVAC Odor
Introduction (Continued)
NOTE
If these conditions exist, consider the following information when diagnosing the source of
AC odors:
• During use, various odors from inside and
outside the vehicle may enter into and
accumulate in the air conditioning system.
This may then cause odor to be emitted
from the vents.
Figure 1.
1
2
• Odors coming from the outside air
and interior can accumulate on the
evaporator. As the evaporator core
changes temperature, some of these odors
may be released resulting in an unpleasant
smell from the HVAC vents.
3
• Interior odors from sources such as air
fresheners, animals, dirt, or trash can also
accumulate within the HVAC system and
contribute unpleasant odors.
• Setting the air conditioning system to the
outside air (Fresh) mode prior to turning
the vehicle OFF can help to minimize these
odors from accumulating.
4
1
Evaporator
2
Odor Source
3
Insoluble Odors Are Blown into Vehicle’s Interior
4
Water Soluble Odors Are Dissolved in the
Moisture on the Evaporator and Drain out
Evaporator Drain
© 2012 Lexus, a division of Toyota Motor Sales, USA
L-SB-0146-11
Rev1
December 8, 2011
Page 3 of 5
HVAC Odor
Production Change Information
This bulletin applies to vehicles produced BEFORE the Production Change Effective VINs shown
below.
MODEL
GS 350
PLANT
Tahara
GS 460
Tahara
IS 250
TMK
IS 350
IS 250C
IS 350C
IS F
Tahara
TMK
DRIVETRAIN
PRODUCTION CHANGE EFFECTIVE VIN
2WD
JTHBE1KS#B0053633
4WD
JTHCE1KS#B0030248
2WD
JTHBL1KS#B5004420
2WD
JTHBF5C2#B5146474
4WD
JTHCF5C2#B5049489
2WD
JTHBF5C2#B2101319
4WD
JTHCF5C2#B2035212
2WD
JTHBE5C2#B5027155
4WD
JTHCE5C2#B5001565
JTHFF2C2#B2517403
2WD
JTHFE2C2#B2505702
Tahara
JTHBP5C2#B5009356
Warranty Information
OP CODE
AC9019
DESCRIPTION
R & R AC Amplifier
MODEL
TIME
OFP
GS 350/460
0.4
88650-30##0
IS 250/350
0.4
IS 250C/350C
0.4
IS F
0.4
88650-533#0
T1
T2
60
54
88650-53310
APPLICABLE WARRANTY
• This repair is covered under the Lexus Comprehensive Warranty. This warranty is in effect for
48 months or 50,000 miles, whichever occurs first, from the vehicle’s in-service date.
• Warranty application is limited to occurrence of the specified condition described in this
bulletin.
© 2012 Lexus, a division of Toyota Motor Sales, USA
L-SB-0146-11
Rev1
December 8, 2011
Page 4 of 5
HVAC Odor
Parts Information
MODEL
2008-2011
GS 350/460
2011 IS 250/350
2010-2011
IS 250C/350C
2011 IS F
PREVIOUS PART
NUMBER
CURRENT PART
NUMBER
88650-30K31
88650-30L81
1
88650-30K41
88650-30L91
1
88650-30K51
88650-30M01
1
88650-30K61
88650-30M11
1
88650-30L80
88650-30L81
1
88650-30L90
88650-30L91
1
88650-30M00
88650-30M01
1
88650-30M10
88650-30M11
88650-53310
88650-53311
1
88650-53320
88650-53321
1
88650-53230
88650-53361
1
88650-53240
88650-53371
1
88650-53360
88650-53361
1
88650-53370
88650-53371
1
88650-53310
88650-53311
1
PART NAME
Amplifier Assy, Air Conditioner
QTY
1
Repair Procedure
1. Duplicate the condition by performing the following:
A. Park the vehicle outside.
B. Set the HVAC system to Low Fan Speed and Face Mode (72 degrees).
C. Turn the HVAC system “OFF”.
D. Turn the vehicle “OFF”.
E. Let the vehicle sit for at least 2 hours.
F. Turn the vehicle “ON”.
G. Turn ON the HVAC system.
NOTE
If the unpleasant odor does not start immediately after the HVAC system is turned “ON” or
continues for more than 30 seconds this bulletin does NOT apply.
© 2012 Lexus, a division of Toyota Motor Sales, USA
L-SB-0146-11
Rev1
December 8, 2011
Page 5 of 5
HVAC Odor
Repair Procedure (Continued)
2. Remove the A/C amplifier.
Refer to the Technical Information System (TIS), applicable model and model year Repair
Manual:
• 2008 / 2009 / 2010 / 2011 GS 350/460:
Vehicle Interior – Heating/Air Conditioning – “Air Conditioning: Air Conditioning Amplifier:
Removal”
• 2011 IS 250/350:
Vehicle Interior – Heating/Air Conditioning – “Air Conditioning: Air Conditioning Amplifier:
Removal”
• 2010 / 2011 IS 250C/350C:
Vehicle Interior – Heating/Air Conditioning – “Heating/Air Conditioning: Air
Conditioning Amplifier: Removal”
• 2011 IS F:
Vehicle Interior – Heating/Air Conditioning – “Heating/Air Conditioning: Air Conditioning
Amplifier: Removal”
3. Install the updated A/C amplifier. Refer to the Technical Information System (TIS), applicable
model and model year Repair Manual:
• 2008 / 2009 / 2010 / 2011 GS 350/460:
Vehicle Interior – Heating/Air Conditioning – “Air Conditioning: Air Conditioning Amplifier:
Installation”
• 2011 IS 250/350:
Vehicle Interior – Heating/Air Conditioning – “Air Conditioning: Air Conditioning Amplifier:
Installation”
• 2010 / 2011 IS 250C/350C:
Vehicle Interior – Heating/Air Conditioning – “Heating/Air Conditioning: Air
Conditioning Amplifier: Installation”
• 2011 IS F:
Vehicle Interior – Heating/Air Conditioning – “Heating/Air Conditioning: Air Conditioning
Amplifier: Installation”
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TSB/Document ID: L-SB-0146-11 Rev
Replacement Service Bulletin Number:
MFR Communication Date: 2012-12-03
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: EQUIPMENT:APPLIANCE:AIR CONDITIONER
MFR Component System:
MFR Component Subsystem:
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