How to remove and install the control assembly on Toyota Highlander?

Disconnect the negative cable from the battery. For Highlander models from 2013 and earlier and Lexus models from 2009 and earlier, remove the center trim panel around the A/C Switch, or the trim panels around the shift lever leading to the A/C Switch for Lexus models. Once the trim is removed, the mounting fasteners will be exposed; 2003 and earlier Lexus models have two fasteners at the bottom of the A/C Switch and audio unit, while 2004 and later models have four. After removing the fasteners, detach the audio unit from the A/C Switch by removing the mounting bracket screws. Pull the assembly out slightly and disconnect all electrical connectors. For Highlander models, remove the mounting screws for the A/C Switch and audio unit. Installation is the reverse of removal. For 2004 and later Highlander models, the A/C Switch is mounted to the center trim panel. Pry the panel outwards to disengage the clips and disconnect the wiring to the A/C Switch. Remove the two mounting screws to separate the A/C Switch from the center trim panel, with installation being the reverse of removal. For 2010 and later Lexus models, the radio unit must be removed, as the A/C Switch is incorporated into the radio receiver and navigation unit. Installation is the reverse of removal, followed by running the engine to check for proper functioning of the A/C. For Highlander models, pry the rear A/C Switch out of the center console, disconnect the electrical connectors, and remove the A/C Switch, with installation being the reverse of removal. For 2018 and later Lexus RX350 models, use a trim tool to pry the rear A/C Switch out, slide it towards the front while pulling the panel outwards, disconnect the electrical connectors, and then install the A/C Switch by connecting the electrical connectors and snapping the panel into place. Finally, run the engine to check for proper functioning of the A/C.

Genuine Toyota Highlander A/C Switch

Air Conditioning Switch

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107 A/C Switches found

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Toyota Highlander Switch, Heater Blower
Part Number: 84732-48010
$66.73 MSRP: $94.07
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Product Specifications
- Other Name: Blower Motor Switch, Fan Switch
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2001-2007 Toyota Highlander | 4 Cyl 2.4L, 6 Cyl 3.0L, 6 Cyl 3.3L | 1MZFE, 2AZFE, 3MZFE; 1MZFE, 2AZFE, 3MZFE; ACU20L-BRPNKA, ACU20L-BWPNKA, ACU25L-BRPNKA, ACU25L-BWPNKA, MCU20L-BWPNKA, MCU23L-BRANKA, MCU23L-BWANKA, MCU25L-BWPNKA, MCU28L-BRANKA, MCU28L-BWANKA, MHU23L-BRXNKA, MHU23L-BWXNKA, MHU28L-BRXNKA, MHU28L-BWXNKA
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Toyota Highlander Housing Sub-Assy, Heater Control
Part Number: 55904-48110
$919.83 MSRP: $1353.98
You Save: $434.15 (33%)
Ships in 1-3 Business Days
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Product Specifications
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2003-2007 Toyota Highlander | 4 Cyl 2.4L, 6 Cyl 3.0L, 6 Cyl 3.3L | 1MZFE, 2AZFE, 3MZFE; 1MZFE, 2AZFE, 3MZFE; ACU20L-BRPNKA, ACU20L-BWPNKA, ACU25L-BRPNKA, ACU25L-BWPNKA, MCU20L-BWPNKA, MCU23L-BRANKA, MCU23L-BWANKA, MCU25L-BWPNKA, MCU28L-BRANKA, MCU28L-BWANKA, MHU23L-BRXNKA, MHU23L-BWXNKA, MHU28L-BRXNKA, MHU28L-BWXNKA
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Toyota Highlander Housing Sub-Assy, Heater Control
Part Number: 55904-48190
$919.83 MSRP: $1353.98
You Save: $434.15 (33%)
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Product Specifications
- Other Name: Dash Control Unit, Heater Control
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2005-2007 Toyota Highlander | 4 Cyl 2.4L, 6 Cyl 3.3L | 2AZFE, 3MZFE; 2AZFE, 3MZFE; ACU20L-BRPNKA, ACU20L-BWPNKA, ACU25L-BRPNKA, ACU25L-BWPNKA, MCU23L-BRANKA, MCU23L-BWANKA, MCU28L-BRANKA, MCU28L-BWANKA
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Toyota Highlander Knob Sub-Assy, Control
Part Number: 55905-48010
$18.87 MSRP: $26.38
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Product Specifications
- Other Name: Knob
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2001-2007 Toyota Highlander | 4 Cyl 2.4L, 6 Cyl 3.0L, 6 Cyl 3.3L | 1MZFE, 2AZFE, 3MZFE; 1MZFE, 2AZFE, 3MZFE; ACU20L-BRPNKA, ACU20L-BWPNKA, ACU25L-BRPNKA, ACU25L-BWPNKA, MCU20L-BWPNKA, MCU23L-BRANKA, MCU23L-BWANKA, MCU25L-BWPNKA, MCU28L-BRANKA, MCU28L-BWANKA, MHU23L-BRXNKA, MHU23L-BWXNKA, MHU28L-BRXNKA, MHU28L-BWXNKA
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Toyota Highlander Control Assembly, Air Co
Part Number: 55900-0E400
$552.04 MSRP: $812.60
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Product Specifications
- Other Name: Control Assy, Air Conditioner; Dash Control Unit, Temperature Control
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2014-2019 Toyota Highlander | 4 Cyl 2.7L, 6 Cyl 3.5L | 1ARFE, 2GRFE, 2GRFKS, 2GRFXE, 2GRFXS; 1ARFE, 2GRFE, 2GRFKS, 2GRFXE, 2GRFXS; ASU50L-ARTNKA, GSU50L-ARTGKA, GSU50L-ARTMKA, GSU50L-ARTNKA, GSU50L-ARZGHA, GSU50L-ARZMHA, GSU50L-ARZNHA, GSU55L-ARTGKA, GSU55L-ARTMKA, GSU55L-ARTNKA, GSU55L-ARZGHA, GSU55L-ARZMHA, GSU55L-ARZNHA, GVU58L-ARXGHA, GVU58L-ARXGKA, GVU58L-ARXMHA, GVU58L-ARXMKA, GVU58L-ARXNHA, GVU58L-ARXNKA
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Toyota Highlander Housing Sub-Assy, Heater Control
Part Number: 55904-48100
$1072.13 MSRP: $1578.18
You Save: $506.05 (33%)
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Product Specifications
- Other Name: Dash Control Unit, Heater Control
- Manufacturer Note: W(AUTO AIR CONDITIONER)
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2003-2007 Toyota Highlander | 4 Cyl 2.4L, 6 Cyl 3.0L, 6 Cyl 3.3L | 1MZFE, 2AZFE, 3MZFE; 1MZFE, 2AZFE, 3MZFE; ACU20L-BRPNKA, ACU20L-BWPNKA, ACU25L-BRPNKA, ACU25L-BWPNKA, MCU20L-BWPNKA, MCU23L-BRANKA, MCU23L-BWANKA, MCU25L-BWPNKA, MCU28L-BRANKA, MCU28L-BWANKA
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Toyota Highlander Housing Sub-Assy, Heater Control
Part Number: 55904-48180
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Product Specifications
- Other Name: Dash Control Unit
- Manufacturer Note: LIMITED(USA)
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2006-2007 Toyota Highlander | 6 Cyl 3.3L | 3MZFE; 3MZFE; MHU23L-BRXNKA, MHU23L-BWXNKA, MHU28L-BRXNKA, MHU28L-BWXNKA
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Part Number: 55900-48580
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Product Specifications
- Other Name: Control Assy, Air Conditioner, NO.2; Heater & AC Control, Temperature Control
- Manufacturer Note: REAR AIR CONDITIONER-AUTO
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2010-2013 Toyota Highlander | Grande, Limited, Sport, STD | 4 Cyl 2.7L, 6 Cyl 3.3L, 6 Cyl 3.5L | 1ARFE, 2GRFE, 2GRFXE, 3MZFE; 1ARFE, 2GRFE, 2GRFXE, 3MZFE; ASU40L-BRTNKA, GSU40L-BRAGKA, GSU40L-BRAMKA, GSU40L-BRANKA, GSU40L-BRASKA, GSU45L-BRAGKA, GSU45L-BRAMKA, GSU45L-BRANKA, GSU45L-BRASKA, GVU48L-BRXGKA, GVU48L-BRXNKA, MHU48L-BRXMKA, MHU48L-BRXNKA
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Toyota Highlander Knob Sub-Assy, Control
Part Number: 55905-48020
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Product Specifications
- Other Name: Knob
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2001-2007 Toyota Highlander | 4 Cyl 2.4L, 6 Cyl 3.0L, 6 Cyl 3.3L | 1MZFE, 2AZFE, 3MZFE; 1MZFE, 2AZFE, 3MZFE; ACU20L-BRPNKA, ACU20L-BWPNKA, ACU25L-BRPNKA, ACU25L-BWPNKA, MCU20L-BWPNKA, MCU23L-BRANKA, MCU23L-BWANKA, MCU25L-BWPNKA, MCU28L-BRANKA, MCU28L-BWANKA, MHU23L-BRXNKA, MHU23L-BWXNKA, MHU28L-BRXNKA, MHU28L-BWXNKA
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Part Number: 55900-0E680
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Product Specifications
- Other Name: Heater & AC Control, Heater Control
- Manufacturer Note: PLATINUM PACKAGE
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2020-2023 Toyota Highlander | 4 Cyl 2.4L, 4 Cyl 2.5L, 6 Cyl 3.5L | 2GRFKS, A25AFXS, T24AFTS; 2GRFKS, A25AFXS, T24AFTS; AXUH70L-ARXGHA, AXUH70L-ARXMHA, AXUH70L-ARXNHA, AXUH78L-ARXGHA, AXUH78L-ARXMHA, AXUH78L-ARXNHA, GSU70L-ARZGHA, GSU70L-ARZMHA, GSU70L-ARZNHA, GSU70L-ARZSHA, GSU75L-ARZGHA, GSU75L-ARZMHA, GSU75L-ARZNHA, GSU75L-ARZSHA, TXUA70L-ARZGTA, TXUA70L-ARZMTA, TXUA70L-ARZNTA, TXUA70L-ARZSTA, TXUA75L-ARZGTA, TXUA75L-ARZMTA, TXUA75L-ARZNTA, TXUA75L-ARZSTA
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Part Number: 55900-0E470
$552.04 MSRP: $812.60
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Product Specifications
- Other Name: Control Assy, Air Conditioner, NO.2; Heater & AC Control
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2014-2019 Toyota Highlander | 4 Cyl 2.7L, 6 Cyl 3.5L | 1ARFE, 2GRFE, 2GRFKS, 2GRFXE, 2GRFXS; 1ARFE, 2GRFE, 2GRFKS, 2GRFXE, 2GRFXS; ASU50L-ARTNKA, GSU50L-ARTGKA, GSU50L-ARTMKA, GSU50L-ARTNKA, GSU50L-ARZGHA, GSU50L-ARZMHA, GSU50L-ARZNHA, GSU55L-ARTGKA, GSU55L-ARTMKA, GSU55L-ARTNKA, GSU55L-ARZGHA, GSU55L-ARZMHA, GSU55L-ARZNHA, GVU58L-ARXGHA, GVU58L-ARXGKA, GVU58L-ARXMHA, GVU58L-ARXMKA, GVU58L-ARXNHA, GVU58L-ARXNKA
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Part Number: 55900-0E420
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Product Specifications
- Other Name: Control Assy, Air Conditioner
- Manufacturer Note: OUTSIDE REAR VIEW MIRROR-RETRACTABLE(COLORE),WITH(HEATER)
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2014-2019 Toyota Highlander | 4 Cyl 2.7L, 6 Cyl 3.5L | 1ARFE, 2GRFE, 2GRFKS, 2GRFXE, 2GRFXS; 1ARFE, 2GRFE, 2GRFKS, 2GRFXE, 2GRFXS; ASU50L-ARTNKA, GSU50L-ARTGKA, GSU50L-ARTMKA, GSU50L-ARTNKA, GSU50L-ARZGHA, GSU50L-ARZMHA, GSU50L-ARZNHA, GSU55L-ARTGKA, GSU55L-ARTMKA, GSU55L-ARTNKA, GSU55L-ARZGHA, GSU55L-ARZMHA, GSU55L-ARZNHA, GVU58L-ARXGHA, GVU58L-ARXGKA, GVU58L-ARXMHA, GVU58L-ARXMKA, GVU58L-ARXNHA, GVU58L-ARXNKA
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Toyota Highlander Housing Sub-Assy, Heater Control
Part Number: 55904-48021
$1066.17 MSRP: $1569.39
You Save: $503.22 (33%)
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Product Specifications
- Other Name: Dash Control Unit, Heater Control
- Manufacturer Note: W(AUTO AIR CONDITIONER)
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2001-2004 Toyota Highlander | 4 Cyl 2.4L, 6 Cyl 3.0L, 6 Cyl 3.3L | 1MZFE, 2AZFE, 3MZFE; 1MZFE, 2AZFE, 3MZFE; ACU20L-BRPNKA, ACU20L-BWPNKA, ACU25L-BRPNKA, ACU25L-BWPNKA, MCU20L-BWPNKA, MCU23L-BRANKA, MCU23L-BWANKA, MCU25L-BWPNKA, MCU28L-BRANKA, MCU28L-BWANKA
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Part Number: 55900-0E260
$751.08 MSRP: $1105.58
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Product Specifications
- Other Name: Control Assy, Air Conditioner; Dash Control Unit, Temperature Control
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2010-2013 Toyota Highlander | Limited, Medium, Sport, STD | 4 Cyl 2.7L, 6 Cyl 3.5L | 1ARFE, 2GRFE; 1ARFE, 2GRFE; ASU40L-ARTNKA, GSU40L-ARAGKA, GSU40L-ARAMKA, GSU40L-ARANKA, GSU40L-ARASKA, GSU45L-ARAGKA, GSU45L-ARAMKA, GSU45L-ARANKA, GSU45L-ARASKA
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Part Number: 55900-0E710
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Product Specifications
- Other Name: Dash Control Unit
- Manufacturer Note: AUDIO-12.3INCH(EMV) DECKLESS JBL11SP&BACK MONITOR-PANORAMIC VIEW MONITOR
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2020-2023 Toyota Highlander | 4 Cyl 2.4L, 4 Cyl 2.5L, 6 Cyl 3.5L | 2GRFKS, A25AFXS, T24AFTS; 2GRFKS, A25AFXS, T24AFTS; AXUH70L-ARXGHA, AXUH70L-ARXMHA, AXUH70L-ARXNHA, AXUH78L-ARXGHA, AXUH78L-ARXMHA, AXUH78L-ARXNHA, GSU70L-ARZGHA, GSU70L-ARZMHA, GSU70L-ARZNHA, GSU70L-ARZSHA, GSU75L-ARZGHA, GSU75L-ARZMHA, GSU75L-ARZNHA, GSU75L-ARZSHA, TXUA70L-ARZGTA, TXUA70L-ARZMTA, TXUA70L-ARZNTA, TXUA70L-ARZSTA, TXUA75L-ARZGTA, TXUA75L-ARZMTA, TXUA75L-ARZNTA, TXUA75L-ARZSTA
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Part Number: 55900-0E690
$433.58 MSRP: $638.23
You Save: $204.65 (33%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Heater & AC Control, Heater Control
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2020-2023 Toyota Highlander | 4 Cyl 2.4L, 4 Cyl 2.5L, 6 Cyl 3.5L | 2GRFKS, A25AFXS, T24AFTS; 2GRFKS, A25AFXS, T24AFTS; AXUH70L-ARXGHA, AXUH70L-ARXMHA, AXUH70L-ARXNHA, AXUH78L-ARXGHA, AXUH78L-ARXMHA, AXUH78L-ARXNHA, GSU70L-ARZGHA, GSU70L-ARZMHA, GSU70L-ARZNHA, GSU70L-ARZSHA, GSU75L-ARZGHA, GSU75L-ARZMHA, GSU75L-ARZNHA, GSU75L-ARZSHA, TXUA70L-ARZGTA, TXUA70L-ARZMTA, TXUA70L-ARZNTA, TXUA70L-ARZSTA, TXUA75L-ARZGTA, TXUA75L-ARZMTA, TXUA75L-ARZNTA, TXUA75L-ARZSTA
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Part Number: 55900-0E590
$440.69 MSRP: $648.70
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Product Specifications
- Other Name: Dash Control Unit, Temperature Control
- Manufacturer Note: CANADA SPEC&HYBRID SPECIAL EDITION
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2020-2023 Toyota Highlander | 4 Cyl 2.4L, 4 Cyl 2.5L, 6 Cyl 3.5L | 2GRFKS, A25AFXS, T24AFTS; 2GRFKS, A25AFXS, T24AFTS; AXUH70L-ARXGHA, AXUH70L-ARXMHA, AXUH70L-ARXNHA, AXUH78L-ARXGHA, AXUH78L-ARXMHA, AXUH78L-ARXNHA, GSU70L-ARZGHA, GSU70L-ARZMHA, GSU70L-ARZNHA, GSU70L-ARZSHA, GSU75L-ARZGHA, GSU75L-ARZMHA, GSU75L-ARZNHA, GSU75L-ARZSHA, TXUA70L-ARZGTA, TXUA70L-ARZMTA, TXUA70L-ARZNTA, TXUA70L-ARZSTA, TXUA75L-ARZGTA, TXUA75L-ARZMTA, TXUA75L-ARZNTA, TXUA75L-ARZSTA
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Toyota Highlander Control Assembly, Air Co
Part Number: 55900-0E410
$606.27 MSRP: $892.43
You Save: $286.16 (33%)
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Product Specifications
- Other Name: Control Assy, Air Conditioner
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2014-2017 Toyota Highlander | 4 Cyl 2.7L, 6 Cyl 3.5L | 1ARFE, 2GRFE, 2GRFKS, 2GRFXE, 2GRFXS; 1ARFE, 2GRFE, 2GRFKS, 2GRFXE, 2GRFXS; ASU50L-ARTNKA, GSU50L-ARTGKA, GSU50L-ARTMKA, GSU50L-ARTNKA, GSU50L-ARZGHA, GSU50L-ARZMHA, GSU50L-ARZNHA, GSU55L-ARTGKA, GSU55L-ARTMKA, GSU55L-ARTNKA, GSU55L-ARZGHA, GSU55L-ARZMHA, GSU55L-ARZNHA, GVU58L-ARXGHA, GVU58L-ARXGKA, GVU58L-ARXMHA, GVU58L-ARXMKA, GVU58L-ARXNHA, GVU58L-ARXNKA
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Toyota Highlander Control Assembly, Air Co
Part Number: 55900-0E190
$646.83 MSRP: $952.14
You Save: $305.31 (33%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Control Assy, Air Conditioner, NO.2; Heater & AC Control, Temperature Control
- Manufacturer Note: REAR AIR CONDITIONER-WITH(REAR AUTO AIR CONDITIONER)
- Replaces: 55900-48020
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2008-2011 Toyota Highlander | Grande, Limited, Medium, STD, Sport | 4 Cyl 2.7L, 6 Cyl 3.3L, 6 Cyl 3.5L | 1ARFE, 2GRFE, 2GRFXE, 3MZFE; 1ARFE, 2GRFE, 2GRFE; ASU40L-ARTNKA, 2GRFXE, 3MZFE; ASU40L-BRTNKA, GSU40L-ARAGKA, GSU40L-ARAMKA, GSU40L-ARANKA, GSU40L-ARASKA, GSU40L-BRAGKA, GSU40L-BRAMKA, GSU40L-BRANKA, GSU40L-BRASKA, GSU45L-ARAGKA, GSU45L-ARAMKA, GSU45L-ARANKA, GSU45L-ARASKA, GSU45L-BRAGKA, GSU45L-BRAMKA, GSU45L-BRANKA, GSU45L-BRASKA, GVU48L-BRXGKA, GVU48L-BRXNKA, MHU48L-BRXMKA, MHU48L-BRXNKA
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Toyota Highlander CONTROL ASSY, AIR CO
Part Number: 55900-0E691
$323.49 MSRP: $463.87
You Save: $140.38 (31%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Heater & A/C Control, Heater Control
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2022-2024 Toyota Highlander | 4 Cyl 2.4L, 4 Cyl 2.5L, 6 Cyl 3.5L | 2GRFKS, A25AFXS, T24AFTS; 2GRFKS, A25AFXS, T24AFTS; AXUH70L-ARXGHA, AXUH70L-ARXMHA, AXUH70L-ARXNHA, AXUH78L-ARXGHA, AXUH78L-ARXMHA, AXUH78L-ARXNHA, GSU70L-ARZGHA, GSU70L-ARZMHA, GSU70L-ARZNHA, GSU70L-ARZSHA, GSU75L-ARZGHA, GSU75L-ARZMHA, GSU75L-ARZNHA, GSU75L-ARZSHA, TXUA70L-ARZGTA, TXUA70L-ARZMTA, TXUA70L-ARZNTA, TXUA70L-ARZSTA, TXUA75L-ARZGTA, TXUA75L-ARZMTA, TXUA75L-ARZNTA, TXUA75L-ARZSTA

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Toyota Highlander A/C Switch

If you are in demand for superior quality and affordable OEM Toyota Highlander A/C Switch, then shop with us! We own a wide range of the reduced-priced genuine Toyota Highlander A/C Switch. You can purchase in confidence as all parts come with a manufacturer's warranty. Any issues with our products? No need to worry as we have a hassle-free return policy to guide you every step of the way.

Toyota Highlander A/C Switch Parts Questions & Experts Answers

Housing Sub-Assy, Heater Control
55904-48031
Q: How to remove and install the control assembly on Toyota Highlander?
A: Disconnect the negative cable from the battery. For Highlander models from 2013 and earlier and Lexus models from 2009 and earlier, remove the center trim panel around the A/C Switch, or the trim panels around the shift lever leading to the A/C Switch for Lexus models. Once the trim is removed, the mounting fasteners will be exposed; 2003 and earlier Lexus models have two fasteners at the bottom of the A/C Switch and audio unit, while 2004 and later models have four. After removing the fasteners, detach the audio unit from the A/C Switch by removing the mounting bracket screws. Pull the assembly out slightly and disconnect all electrical connectors. For Highlander models, remove the mounting screws for the A/C Switch and audio unit. Installation is the reverse of removal. For 2004 and later Highlander models, the A/C Switch is mounted to the center trim panel. Pry the panel outwards to disengage the clips and disconnect the wiring to the A/C Switch. Remove the two mounting screws to separate the A/C Switch from the center trim panel, with installation being the reverse of removal. For 2010 and later Lexus models, the radio unit must be removed, as the A/C Switch is incorporated into the radio receiver and navigation unit. Installation is the reverse of removal, followed by running the engine to check for proper functioning of the A/C. For Highlander models, pry the rear A/C Switch out of the center console, disconnect the electrical connectors, and remove the A/C Switch, with installation being the reverse of removal. For 2018 and later Lexus RX350 models, use a trim tool to pry the rear A/C Switch out, slide it towards the front while pulling the panel outwards, disconnect the electrical connectors, and then install the A/C Switch by connecting the electrical connectors and snapping the panel into place. Finally, run the engine to check for proper functioning of the A/C.