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Occasional burning smell when heater turns on and air is set to outside?

MythrianXeras on Dec 1, 2025

Dec 5, 2025 11:34 AM
by MythrianXeras

4

456

LS - 3rd Gen (2001-2006)

ac, button, circuit, codes, control, ecu, heater, invehicle, jump, lexus, pressure, problems, recirculate, recirculation, sc300, sensor, switch, temperature

A/C system diagnostics- Need codes.

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1 2 3 4 5)

stoplight on Jul 20, 2001

Nov 29, 2025 07:57 AM
by batshit123

72

184,696

SC - 1st Gen (1992-2000)

74641, 74850, 87240, 8724024040, assembly, cars, control, heater, lexus, replace, sc300, seasons, selonoid, valve, vavle

Replacement OEM Heater control valve two part numbers?

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1 2)

KahnBB6 on Sep 12, 2013

Nov 24, 2025 06:56 PM
by KahnBB6

16

5,587

SC - 1st Gen (1992-2000)

88, 92, ac, book, box, core, corvette, heater, instructions, labor, lexus, rate, replace, replacement, sc300, time

heater core replacement

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1 2)

mtnandy on Oct 31, 2002

Oct 3, 2025 09:28 AM
by denicia

19

18,367

SC - 1st Gen (1992-2000)

2001, bleeding, clublexus, coolant, cooling, gs300, heater, open, rx400h, system, valve, water

Bleeding Coolant System

LexusBiz on Dec 8, 2003

Sep 18, 2025 07:32 AM
by river

4

15,995

SC - 1st Gen (1992-2000)

07 coolant mystery?

cokozak on Mar 26, 2022

Mar 25, 2025 09:18 AM
by misschris

2

866

IS - 2nd Gen (2006-2013)

Another O. L. T. DIY - In depth with the heater core control valve

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1 2 3 4 5 ... Last Page)

O. L. T. on Jul 27, 2011

Dec 20, 2024 06:49 PM
by tfwnoturbo

94

62,898

SC - 1st Gen (1992-2000)

02, 300, 93, control, gs, gs300, heat, heater, issues, lexus, no heat, not working, taking, valve, vents

GS300 No Heat coming out of Heater - Help Its cold

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1 2)

halac on Feb 15, 2013

Dec 11, 2024 08:06 AM
by cmdrreg

18

40,923

GS - 1st Gen (1993-1997)

250, air, blowing, blows, cold, dash, duct, es350, heater, lexus, mix, remove, rx300, servo, vent

Heater blowing cold air

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ronl1961 on Sep 29, 2008

Dec 6, 2024 08:07 AM
by wing0

131

360,283

RX - 1st Gen (1999-2003)

06, 350, black, controls, fuse, heat, heater, is250, is350, lexus, navigation, radio, rx, screen, white

Navigation screen black! Help!!!!

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Nsteezyy on Sep 27, 2013

Nov 22, 2024 02:26 AM
by Tien510

124

225,051

IS - 2nd Gen (2006-2013)

auxiliary, coolant, heater, pump, rx450h

2013 RX450h auxiliary pump replacement, heating problem when on battery

poplo on May 15, 2023

Nov 22, 2024 01:32 AM
by poplo

4

2,414

Hybrid Technology

02, 330, antifreeze, block, coolant, dried, engine, es300, heater, leak, lexus, motor, pics, radiator, rx, rx330, rx350

04 RX 330 Coolant Leak-Engine Block Heater Cover Plate

ethridgedsb on Dec 18, 2010

Jun 4, 2024 10:41 AM
by rxrxrx330

10

31,640

RX - 2nd Gen (2004-2009)

air conditioning, climate, control, heater, vent, vents

Replace broken climate control frame

sjzack on Mar 3, 2023

Mar 13, 2023 04:08 AM
by sjzack

3

757

LS - 4th Gen (2007-2017)

2004, 2007, 470, bearing, cost, diagram, gauge, gx, gx470, heat, heater, hot, lexus, rear, replacement, temperature, wheel

2004 GX 470 Heater Problems

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1 2)

wind415 on Nov 9, 2012

Jan 30, 2023 06:02 PM
by induna

17

19,659

GX - 1st Gen (2003-2009)

8724024040, ac, actuator, control, gs300, heater, lexus, part, piclexus, power, sc300, sc400, steering, test, valve, vsv, water

94 SC400 Heater Control Valve?

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1 2 3)

Fastfwd on Nov 25, 2008

Jan 25, 2023 07:47 AM
by pishta

43

63,278

SC - 1st Gen (1992-2000)

1995, bypass, bypassing, car, control, heater, hose, lexus, location, override, ranger, sc300, sc400, supra, valve, yahoo

can i bypass my heater control valve

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1 2)

americk22 on Dec 15, 2010

Jan 25, 2023 07:34 AM
by pishta

16

32,670

SC - 1st Gen (1992-2000)

air condition, air conditioner, cold air, heater, is300 help please

2018 IS300 - AC Hot and Cold Air Mix

johnnys on Nov 7, 2022

Nov 7, 2022 07:58 PM
by yohan81718

1

2,449

IS - 3rd Gen (2014-present)

09, 1999, 2001, 300, blower, control, damper, fan, heater, lexus, motor, problem, replace, rx, rx300

Replace Blower Motor RX 300

jmt888 on Dec 4, 2012

Sep 13, 2022 06:30 PM
by maxSteel

10

16,002

RX - 1st Gen (1999-2003)

How do I flush a heater core in a 2008 rx350?

treydot on Jan 9, 2022

Jan 10, 2022 03:36 PM
by Felix

2

2,245

RX - 2nd Gen (2004-2009)

2000, 2002, 430, block, cad, engine, freeze, gs300, heater, lexus, ls, ls430, plugs, start, subaru

Block heater on LS430?

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1 2)

telegix on Oct 13, 2004

Jan 6, 2022 01:22 AM
by telegix

18

8,513

LS - 3rd Gen (2001-2006)

2004, club, cold, coming, es330, golf, heat, heater, heating, lexus, lx, passinger, rack, side, sided, stack

Driver side heat, passenger side cold air

SalSegav on Nov 27, 2012

Dec 9, 2021 09:23 AM
by Lexus4321

10

33,882

GX - 1st Gen (2003-2009)

air conditioning, heater, heater core, hvac

Heater HVAC issue

MacklinH on Nov 30, 2021

Dec 2, 2021 09:41 AM
by End1ess

5

1,319

NX - 1st Gen (2015-2021)

50, 97, ac, bad, box, fuse, heat, heater, hot, lexus, located, rx300, sc400, thermostat, tool

I Have NO HEAT - HELP

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1 2 3)

BlackRX300 on Oct 31, 2006

Nov 19, 2021 06:38 PM
by yellowblan

33

34,491

RX - 1st Gen (1999-2003)

300, block, bolck, egine, engine, gs, heater, hs250h, is250, is350, lexus, location, ls430, ls460, rx330

Block Heater Install

kiwi on Jan 7, 2010

Sep 21, 2021 01:13 PM
by baba19

4

8,009

Maintenance

electrical, fuse, gx470, heated seats, heater

Heated Seat Stuck "On"

mozzy on Aug 15, 2021

Aug 16, 2021 02:43 PM
by chiph9

2

1,623

GX - 1st Gen (2003-2009)

af, clicking, clicks, efi, heater, lexus, relay, rx300, temperature

Relay clicking

Caprice on Jan 30, 2007

Jul 5, 2021 10:06 PM
by salimshah

14

7,924

RX - 1st Gen (1999-2003)

04, 470, ac, access, blower, fan, gs300, gx, heat, heater, intermittent, lexus, max, maximum, sc400, turns

AC/Heat blower fan intermittent

2ks on Sep 26, 2012

Jun 11, 2021 01:23 AM
by Australian

7

17,318

RX - 1st Gen (1999-2003)

2002 ES300 blend door part numbers????

negnewt on Mar 19, 2021

Mar 22, 2021 09:14 PM
by Arsenii

3

609

ES - 1st to 6th Gen (1990-2018)

1992, ac, center, heater, is350, lexus, malfunction, removal, remove, removing, repairs, replacement, sc300, sc400, vent

DIY: Remove cracked center vent

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SMARK on Dec 30, 2002

Feb 26, 2021 10:35 AM
by tylersc300

68

70,825

SC - 1st Gen (1992-2000)

06, 2002, 430, back, connection, element, heater, heaters, inop, lexus, loose, sc, sc430, seat, working

Seat Heater

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1 2)

OBP on Apr 22, 2011

Feb 15, 2021 05:33 AM
by mandyfig

26

8,616

SC430 - 2nd Gen (2001-2010)