What is the purpose and function of the Anti-lock Brake System (ABS),ABS Control Module and Speed Sensor on Toyota Sienna?

The Anti-lock Brake System (ABS) is designed to maintain vehicle steerability, directional stability, and optimum deceleration under severe braking conditions and on most road surfaces by monitoring the rotational speed of each wheel and controlling brake line pressure to prevent wheel lock-up. It works in conjunction with Automatic Skid Control and tire pressure warning systems, where the former helps control skids by braking outside wheels during oversteering, and the latter alerts the driver to low tire pressure through a dashboard light. The actuator assembly includes the master cylinder, an electric hydraulic pump, and four solenoid valves that modulate brake line pressure during ABS operation. Speed sensors located at each wheel generate electrical pulsations to indicate wheel rotational speed, with front sensors mounted to the steering knuckle and rear sensors bolted to the axle carriers. The ABS computer, housed within the actuator, processes information from the wheel speed sensors to control hydraulic line pressure and monitors the system for faults, illuminating an "ABS" light on the dashboard if a problem arises. The built-in self-diagnosis system detects sensor malfunctions and stores failure codes, which can be accessed by turning the ignition key off and using jumper wires on the data link connectors. The ABS warning light indicates diagnostic codes through a series of flashes, with specific patterns corresponding to different malfunctions. After diagnosis, trouble codes can be cleared by jumping terminals on the data link connector and pressing the brake pedal multiple times, after which the system or component should be checked or serviced as needed.

Genuine Toyota Sienna ABS Control Module

Anti Lock Brake Control Module

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45 ABS Control Modules found

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Toyota Sienna Brake Actuator Assembly
Part Number: 44050-08061
$1038.79 MSRP: $1332.29
You Save: $293.50 (23%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: ACTUATOR Assembly, Brake; Actuator, Hydraulic Unit
- Manufacturer Note: W(VSC)
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2005-2007 Toyota Sienna | CE, LE, XLE | 6 Cyl 3.3L, 6 Cyl 3.5L | 2GRFE, 3MZFE; GSL20L-PFADKK, GSL20L-PFAEKA, GSL20L-PFAEKK, GSL20L-PFAQKA, GSL20L-PFAQKK, GSL20L-PRADKK, GSL20L-PRAEKA, GSL20L-PRAEKK, GSL20L-PRAQKA, GSL20L-PRAQKK, GSL23L-SBADKA, GSL23L-SBADKK, GSL25L-PFADKK, GSL25L-PFAEKA, GSL25L-PFAEKK, GSL25L-PFAQKA, GSL25L-PFAQKK, MCL20L-PFADKK, MCL20L-PFAEKA, MCL20L-PFAEKK, MCL20L-PFAQKA, MCL20L-PFAQKK, MCL20L-PRADKK, MCL20L-PRAEKA, MCL20L-PRAEKK, MCL20L-PRAQKA, MCL20L-PRAQKK, MCL23L-SBADKA, MCL23L-SBADKK, MCL25L-PFADKK, MCL25L-PFAEKA, MCL25L-PFAEKK, MCL25L-PFAQKA, MCL25L-PFAQKK
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Toyota Sienna Brake Actuator Assembly
Part Number: 44050-08150
$1092.38 MSRP: $1401.01
You Save: $308.63 (23%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: ACTUATOR Assembly, Brake; Actuator, Hydraulic Unit
- Manufacturer Note: W(VSC)
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2006-2009 Toyota Sienna | CE, LE, XLE | 6 Cyl 3.3L, 6 Cyl 3.5L | 2GRFE, 3MZFE; GSL20L-PFADKK, GSL20L-PFAEKA, GSL20L-PFAEKK, GSL20L-PFAQKA, GSL20L-PFAQKK, GSL20L-PRADKK, GSL20L-PRAEKA, GSL20L-PRAEKK, GSL20L-PRAQKA, GSL20L-PRAQKK, GSL23L-SBADKA, GSL23L-SBADKK, GSL25L-PFADKK, GSL25L-PFAEKA, GSL25L-PFAEKK, GSL25L-PFAQKA, GSL25L-PFAQKK, MCL20L-PFADKK, MCL20L-PFAEKA, MCL20L-PFAEKK, MCL20L-PFAQKA, MCL20L-PFAQKK, MCL20L-PRADKK, MCL20L-PRAEKA, MCL20L-PRAEKK, MCL20L-PRAQKA, MCL20L-PRAQKK, MCL23L-SBADKA, MCL23L-SBADKK, MCL25L-PFADKK, MCL25L-PFAEKA, MCL25L-PFAEKK, MCL25L-PFAQKA, MCL25L-PFAQKK
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Toyota Sienna Brake Actuator Assembly
Part Number: 44050-08221
$992.67 MSRP: $1273.14
You Save: $280.47 (23%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: ACTUATOR Assembly, Brake; Actuator, Modulator Valve
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2011-2015 Toyota Sienna | LE, SE, STD, XLE | 4 Cyl 2.7L, 6 Cyl 3.5L | 1ARFE, 2GRFE; ASL30L-PFTEKA, ASL30L-PRTEKA, GSL30L-PFTDKA, GSL30L-PFTEKA, GSL30L-PFTQKA, GSL30L-PRTEKA, GSL30L-PRTQKA, GSL30L-PRTSKA, GSL33L-SBTDKA, GSL35L-PFTDKA, GSL35L-PFTEKA, GSL35L-PFTQKA
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Toyota Sienna Skid Control Computer
Part Number: 89541-08020
$2594.17 MSRP: $3873.46
You Save: $1279.29 (34%)
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Product Specifications
- Other Name: Computer, Skid Control; Control Module
- Manufacturer Note: W(VSC)
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2000-2003 Toyota Sienna | CE, LE | 6 Cyl 3.0L | 1MZFE; MCL10L-GFSDKA, MCL10L-GFSDKK, MCL10L-GFSGKA, MCL10L-GFSGKK, MCL10L-PFSDKA, MCL10L-PFSDKK, MCL10L-PFSGKA, MCL10L-PFSGKK, MCL10L-SESDKA, MCL10L-SESDKK
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Toyota Sienna Brake Actuator Assembly
Part Number: 44050-08200
$1071.32 MSRP: $1374.01
You Save: $302.69 (23%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: ACTUATOR Assembly, Brake; Actuator, Modulator Valve
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2011-2012 Toyota Sienna | LE, SE, STD, XLE | 4 Cyl 2.7L, 6 Cyl 3.5L | 1ARFE, 2GRFE; ASL30L-PFTEKA, ASL30L-PRTEKA, GSL30L-PFTDKA, GSL30L-PFTEKA, GSL30L-PFTQKA, GSL30L-PRTEKA, GSL30L-PRTQKA, GSL30L-PRTSKA, GSL33L-SBTDKA, GSL35L-PFTDKA, GSL35L-PFTEKA, GSL35L-PFTQKA
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Toyota Sienna Brake Actuator Assembly
Part Number: 44050-08160
$951.34 MSRP: $1220.13
You Save: $268.79 (23%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: ACTUATOR Assembly, Brake; Hydraulic Unit
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2006-2009 Toyota Sienna | CE, LE, XLE | 6 Cyl 3.3L, 6 Cyl 3.5L | 2GRFE, 3MZFE; GSL20L-PFADKK, GSL20L-PFAEKA, GSL20L-PFAEKK, GSL20L-PFAQKA, GSL20L-PFAQKK, GSL20L-PRADKK, GSL20L-PRAEKA, GSL20L-PRAEKK, GSL20L-PRAQKA, GSL20L-PRAQKK, GSL23L-SBADKA, GSL23L-SBADKK, GSL25L-PFADKK, GSL25L-PFAEKA, GSL25L-PFAEKK, GSL25L-PFAQKA, GSL25L-PFAQKK, MCL20L-PFADKK, MCL20L-PFAEKA, MCL20L-PFAEKK, MCL20L-PFAQKA, MCL20L-PFAQKK, MCL20L-PRADKK, MCL20L-PRAEKA, MCL20L-PRAEKK, MCL20L-PRAQKA, MCL20L-PRAQKK, MCL23L-SBADKA, MCL23L-SBADKK, MCL25L-PFADKK, MCL25L-PFAEKA, MCL25L-PFAEKK, MCL25L-PFAQKA, MCL25L-PFAQKK
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Toyota Sienna Brake Actuator Assembly
Part Number: 44050-08170
$1037.90 MSRP: $1331.14
You Save: $293.24 (23%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: ACTUATOR Assembly, Brake; Hydraulic Unit
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2006-2009 Toyota Sienna | CE, LE, XLE | 6 Cyl 3.3L, 6 Cyl 3.5L | 2GRFE, 3MZFE; GSL20L-PFADKK, GSL20L-PFAEKA, GSL20L-PFAEKK, GSL20L-PFAQKA, GSL20L-PFAQKK, GSL20L-PRADKK, GSL20L-PRAEKA, GSL20L-PRAEKK, GSL20L-PRAQKA, GSL20L-PRAQKK, GSL23L-SBADKA, GSL23L-SBADKK, GSL25L-PFADKK, GSL25L-PFAEKA, GSL25L-PFAEKK, GSL25L-PFAQKA, GSL25L-PFAQKK, MCL20L-PFADKK, MCL20L-PFAEKA, MCL20L-PFAEKK, MCL20L-PFAQKA, MCL20L-PFAQKK, MCL20L-PRADKK, MCL20L-PRAEKA, MCL20L-PRAEKK, MCL20L-PRAQKA, MCL20L-PRAQKK, MCL23L-SBADKA, MCL23L-SBADKK, MCL25L-PFADKK, MCL25L-PFAEKA, MCL25L-PFAEKK, MCL25L-PFAQKA, MCL25L-PFAQKK
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Toyota Sienna Brake Actuator Assembly
Part Number: 44050-08330
$945.89 MSRP: $1213.13
You Save: $267.24 (23%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: ACTUATOR ASSY, BRAKE; ABS Control Unit, Modulator Valve
- Manufacturer Note: (L),*614
- Replaces: 44050-45010
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2021-2024 Toyota Sienna | 4 Cyl 2.5L | A25AFXS; AXLH40L-PNXLHA, AXLH40L-PNXSHA, AXLH40L-PNXXHA, AXLH40L-PPXEHA, AXLH40L-PPXXHA, AXLH45L-PNXLHA, AXLH45L-PNXSHA, AXLH45L-PNXXHA, AXLH45L-PPXEHA
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Toyota Sienna Brake Actuator Assembly
Part Number: 44050-08350
$821.17 MSRP: $1053.18
You Save: $232.01 (23%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: ACTUATOR ASSY, BRAKE
- Manufacturer Note: *614
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2022-2024 Toyota Sienna | 4 Cyl 2.5L | A25AFXS; AXLH40L-PNXLHA, AXLH40L-PNXSHA, AXLH40L-PNXXHA, AXLH40L-PPXEHA, AXLH40L-PPXXHA, AXLH45L-PNXLHA, AXLH45L-PNXSHA, AXLH45L-PNXXHA, AXLH45L-PPXEHA
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Toyota Sienna Brake Actuator Assembly
Part Number: 44050-08290
$983.43 MSRP: $1261.28
You Save: $277.85 (23%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: ACTUATOR Assembly, Brake; Actuator, Modulator Valve
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2017-2020 Toyota Sienna | LE, SE, STD, XLE | 6 Cyl 3.5L | 2GRFE, 2GRFKS; GSL30L-PFTDKA, GSL30L-PFTEKA, GSL30L-PFTQKA, GSL30L-PFZDHA, GSL30L-PFZEHA, GSL30L-PFZQHA, GSL30L-PRTEKA, GSL30L-PRTQKA, GSL30L-PRTSKA, GSL30L-PRZEHA, GSL30L-PRZQHA, GSL30L-PRZSHA, GSL33L-SBTDKA, GSL33L-SBZDHA, GSL33L-SEZDHA, GSL35L-PFTEKA, GSL35L-PFTQKA, GSL35L-PFZEHA, GSL35L-PFZQHA, GSL35L-PFZSHA
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Toyota Sienna Brake Actuator Assembly
Part Number: 44050-08352
$839.72 MSRP: $1076.97
You Save: $237.25 (23%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: ACTUATOR ASSY, BRAKE; ABS Control Unit, Modulator Valve
- Manufacturer Note: *614
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2023-2024 Toyota Sienna | 4 Cyl 2.5L | A25AFXS; AXLH40L-PNXLHA, AXLH40L-PNXSHA, AXLH40L-PNXXHA, AXLH40L-PPXEHA, AXLH40L-PPXXHA, AXLH45L-PNXLHA, AXLH45L-PNXSHA, AXLH45L-PNXXHA, AXLH45L-PPXEHA
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Toyota Sienna Brake Actuator Assembly
Part Number: 44050-08151
$1085.80 MSRP: $1392.58
You Save: $306.78 (23%)
ADD TO CART
Product Specifications
- Other Name: ACTUATOR Assembly, Brake; Actuator, Hydraulic Unit
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2008-2010 Toyota Sienna | CE, LE, XLE | 6 Cyl 3.5L | 2GRFE; GSL20L-PFADKK, GSL20L-PFAEKA, GSL20L-PFAEKK, GSL20L-PFAQKA, GSL20L-PFAQKK, GSL20L-PRADKK, GSL20L-PRAEKA, GSL20L-PRAEKK, GSL20L-PRAQKA, GSL20L-PRAQKK, GSL23L-SBADKA, GSL23L-SBADKK, GSL25L-PFADKK, GSL25L-PFAEKA, GSL25L-PFAEKK, GSL25L-PFAQKA, GSL25L-PFAQKK
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Toyota Sienna Brake Actuator Assembly
Part Number: 44050-45010
$945.89 MSRP: $1213.13
You Save: $267.24 (23%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: ACTUATOR Assembly, Brake; ABS Control Unit, Modulator Valve
- Replaced by: 44050-08330
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2021-2023 Toyota Sienna | 4 Cyl 2.5L | A25AFXS; AXLH40L-PNXLHA, AXLH40L-PNXSHA, AXLH40L-PNXXHA, AXLH40L-PPXEHA, AXLH40L-PPXXHA, AXLH45L-PNXLHA, AXLH45L-PNXSHA, AXLH45L-PNXXHA, AXLH45L-PPXEHA
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Toyota Sienna Brake Actuator Assembly
Part Number: 44050-08260
$976.30 MSRP: $1252.14
You Save: $275.84 (23%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: ACTUATOR Assembly, Brake; Actuator
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2016-2018 Toyota Sienna | LE, SE, STD, XLE | 6 Cyl 3.5L | 2GRFE, 2GRFKS; GSL30L-PFTDKA, GSL30L-PFTEKA, GSL30L-PFTQKA, GSL30L-PFZDHA, GSL30L-PFZEHA, GSL30L-PFZQHA, GSL30L-PRTEKA, GSL30L-PRTQKA, GSL30L-PRTSKA, GSL30L-PRZEHA, GSL30L-PRZQHA, GSL30L-PRZSHA, GSL33L-SBTDKA, GSL33L-SBZDHA, GSL33L-SEZDHA, GSL35L-PFTEKA, GSL35L-PFTQKA, GSL35L-PFZEHA, GSL35L-PFZQHA, GSL35L-PFZSHA
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Toyota Sienna Brake Actuator Assembly
Part Number: 44050-08190
$1010.83 MSRP: $1296.43
You Save: $285.60 (23%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: ACTUATOR Assembly, Brake; Actuator, Modulator Valve
- Manufacturer Note: CRUISE CONTROL-WITH(MILLIMETER WAVE RADAR CRUISE)
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2011-2012 Toyota Sienna | LE, SE, STD, XLE | 4 Cyl 2.7L, 6 Cyl 3.5L | 1ARFE, 2GRFE; ASL30L-PFTEKA, ASL30L-PRTEKA, GSL30L-PFTDKA, GSL30L-PFTEKA, GSL30L-PFTQKA, GSL30L-PRTEKA, GSL30L-PRTQKA, GSL30L-PRTSKA, GSL33L-SBTDKA, GSL35L-PFTDKA, GSL35L-PFTEKA, GSL35L-PFTQKA
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Toyota Sienna Brake Actuator Assembly
Part Number: 44050-08250
$961.15 MSRP: $1232.71
You Save: $271.56 (23%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: ACTUATOR Assembly, Brake; Actuator
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2014-2017 Toyota Sienna | LE, SE, STD, XLE | 4 Cyl 2.7L, 6 Cyl 3.5L | 1ARFE, 2GRFE, 2GRFKS; ASL30L-PFTEKA, ASL30L-PRTEKA, GSL30L-PFTDKA, GSL30L-PFTEKA, GSL30L-PFTQKA, GSL30L-PFZDHA, GSL30L-PFZEHA, GSL30L-PFZQHA, GSL30L-PRTEKA, GSL30L-PRTQKA, GSL30L-PRTSKA, GSL30L-PRZEHA, GSL30L-PRZQHA, GSL30L-PRZSHA, GSL33L-SBTDKA, GSL33L-SBZDHA, GSL33L-SEZDHA, GSL35L-PFTDKA, GSL35L-PFTEKA, GSL35L-PFTQKA, GSL35L-PFZEHA, GSL35L-PFZQHA
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Toyota Sienna Brake Actuator Assembly
Part Number: 44050-08270
$882.50 MSRP: $1131.84
You Save: $249.34 (23%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: ACTUATOR Assembly, Brake; Actuator, Modulator Valve
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2016-2018 Toyota Sienna | LE, SE, STD, XLE | 6 Cyl 3.5L | 2GRFE, 2GRFKS; GSL30L-PFTDKA, GSL30L-PFTEKA, GSL30L-PFTQKA, GSL30L-PFZDHA, GSL30L-PFZEHA, GSL30L-PFZQHA, GSL30L-PRTEKA, GSL30L-PRTQKA, GSL30L-PRTSKA, GSL30L-PRZEHA, GSL30L-PRZQHA, GSL30L-PRZSHA, GSL33L-SBTDKA, GSL33L-SBZDHA, GSL33L-SEZDHA, GSL35L-PFTEKA, GSL35L-PFTQKA, GSL35L-PFZEHA, GSL35L-PFZQHA, GSL35L-PFZSHA
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Toyota Sienna ACTUATOR Assembly, Brake
Part Number: 44050-08020
Product Specifications
- Other Name: Actuator, Motor Pump
- Manufacturer Note: W(VSC)
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2000-2003 Toyota Sienna | CE, LE | 6 Cyl 3.0L | 1MZFE; MCL10L-GFSDKA, MCL10L-GFSDKK, MCL10L-GFSGKA, MCL10L-GFSGKK, MCL10L-PFSDKA, MCL10L-PFSDKK, MCL10L-PFSGKA, MCL10L-PFSGKK, MCL10L-SESDKA, MCL10L-SESDKK
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Toyota Sienna ACTUATOR Assembly, Brake
Part Number: 44050-08050
Product Specifications
- Other Name: Actuator, Motor Pump
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2001-2003 Toyota Sienna | CE, LE | 6 Cyl 3.0L | 1MZFE; MCL10L-GFSDKA, MCL10L-GFSDKK, MCL10L-GFSGKA, MCL10L-GFSGKK, MCL10L-PFSDKA, MCL10L-PFSDKK, MCL10L-PFSGKA, MCL10L-PFSGKK, MCL10L-SESDKA, MCL10L-SESDKK
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Toyota Sienna Brake Actuator Assembly
Part Number: 44050-08092
Product Specifications
- Other Name: ACTUATOR Assembly, Brake; Actuator, Hydraulic Unit
- Manufacturer Note: CRUISE CONTROL-RADAR CRUISE CONTROL
- Replaces: 44050-08091
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2004-2007 Toyota Sienna | CE, LE, XLE | 6 Cyl 3.3L, 6 Cyl 3.5L | 2GRFE, 3MZFE; GSL20L-PFADKK, GSL20L-PFAEKA, GSL20L-PFAEKK, GSL20L-PFAQKA, GSL20L-PFAQKK, GSL20L-PRADKK, GSL20L-PRAEKA, GSL20L-PRAEKK, GSL20L-PRAQKA, GSL20L-PRAQKK, GSL23L-SBADKA, GSL23L-SBADKK, GSL25L-PFADKK, GSL25L-PFAEKA, GSL25L-PFAEKK, GSL25L-PFAQKA, GSL25L-PFAQKK, MCL20L-PFADKK, MCL20L-PFAEKA, MCL20L-PFAEKK, MCL20L-PFAQKA, MCL20L-PFAQKK, MCL20L-PRADKK, MCL20L-PRAEKA, MCL20L-PRAEKK, MCL20L-PRAQKA, MCL20L-PRAQKK, MCL23L-SBADKA, MCL23L-SBADKK, MCL25L-PFADKK, MCL25L-PFAEKA, MCL25L-PFAEKK, MCL25L-PFAQKA, MCL25L-PFAQKK

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Toyota Sienna ABS Control Module

The Toyota Sienna's ABS Control Module helps manage brake pressure so that wheels do not lock, retaining steering capability during stops. The ABS Control Module sends a signal to the hydraulic control unit by using the electronic wheel speed sensors placed next to the toothed ring on each wheel to get the rotational speeds of the wheels and compare them. When the speed of any one wheel decelerates too quickly, it will command the solenoid valves to reduce fluid pressure to that wheel, allowing it to regain traction before restoring full pressure. The ABS Control Module on all models of the Toyota Sienna rapidly goes through this cycling many times per second, faster than a person could pump the pedal, creating the pulsation you feel while braking. By continuously self-checking for faults, the ABS Control Module causes a log of trouble codes to be stored and the ABS warning lamp to be lit. The system offered by Toyota allows a separate regulation at each wheel due to its four-channel design. Combining shorter stopping distances with steerability, this ABS Control Module helps Toyota in achieving safety goals, making sure that Sienna braking is stable and consistent. Thus, it aids in keeping a Sienna under control on different surfaces.

If you are in demand for superior quality and affordable OEM Toyota Sienna ABS Control Module, then shop with us! We own a wide range of the reduced-priced genuine Toyota Sienna ABS Control Module. 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 Sienna ABS Control Module Parts Questions & Experts Answers

ACTUATOR Assembly, Brake
44050-08020
Q: What is the purpose and function of the Anti-lock Brake System (ABS),ABS Control Module and Speed Sensor on Toyota Sienna?
A:
The Anti-lock Brake System (ABS) is designed to maintain vehicle steerability, directional stability, and optimum deceleration under severe braking conditions and on most road surfaces by monitoring the rotational speed of each wheel and controlling brake line pressure to prevent wheel lock-up. It works in conjunction with Automatic Skid Control and tire pressure warning systems, where the former helps control skids by braking outside wheels during oversteering, and the latter alerts the driver to low tire pressure through a dashboard light. The actuator assembly includes the master cylinder, an electric hydraulic pump, and four solenoid valves that modulate brake line pressure during ABS operation. Speed sensors located at each wheel generate electrical pulsations to indicate wheel rotational speed, with front sensors mounted to the steering knuckle and rear sensors bolted to the axle carriers. The ABS computer, housed within the actuator, processes information from the wheel speed sensors to control hydraulic line pressure and monitors the system for faults, illuminating an "ABS" light on the dashboard if a problem arises. The built-in self-diagnosis system detects sensor malfunctions and stores failure codes, which can be accessed by turning the ignition key off and using jumper wires on the data link connectors. The ABS warning light indicates diagnostic codes through a series of flashes, with specific patterns corresponding to different malfunctions. After diagnosis, trouble codes can be cleared by jumping terminals on the data link connector and pressing the brake pedal multiple times, after which the system or component should be checked or serviced as needed.