What Is the Function of the Brake Transmission Shift Interlock (BTSI) System and Neutral Safety Switch and How to Diagnose or Replace It on Lexus RX330?

2015 and later RX 330 models added two solenoid systems. A key lock system and a Shift Lock Module near the brake pedal and transmission sensor control the shift lock solenoid under the console. From 2015 onwards the traditional shift lock solenoid and module have been replaced by a steering lock electronic control unit and its connected actuator. When you switch the key to LOCK the shift lock module blocks movement from PARK until you press the brake pedal first. You must also return the lever to PARK before locking the ignition again. Check that you must press the brake pedal to move the shift lever out of PARK and that the ignition key can only be pulled from the PARK position. Also ensure the ignition key changes to LOCK from OFF only in PARK and the shift lever cannot move from PARK when the ignition key is in OFF, RUN, START, ACC or LOCK mode. Our team will need to make repairs when any problem occurs with BTSI system functions. Unplug the negative battery cable to get to the key lock solenoid under the steering column trim. Disconnect the solenoid and unscrew its mounting screws afterwards. To get to the shift lock module want you to disconnect all the parts that sit above: shift lever assembly, console bulb connector, position indicator slide cover, and lower housing before separating the harness pins and unplugging the module from its base. When the transmission range sensor detects Park/Neutral position it blocks engine start and prevents turning the key in other gears. Adjustments are necessary when the engine starts unexpectedly in gear other than Park or Neutral. When BTSI stops working you can take control of the vehicle by pressing the override button next to the shift lever but only when ignition is in the LOCK position. Beginning with 2015 models you must pry open a protective cap to use this feature.

Genuine Lexus Neutral Safety Switch

Transmission Neutral Safety Switch

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34 Neutral Safety Switches found

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Lexus Switch Assy, Neutral Start
Part Number: 84540-07010
$136.38 MSRP: $185.95
You Save: $49.57 (27%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Neutral Safety Switch, Range Sensor
- Manufacturer Note: (L)
- Replaces: 84540-33010
Fits the following Lexus Models:
- ES300h | 2013-2018 | 6 Cyl 3.5L
- ES350 | 2007-2018 | 6 Cyl 3.5L
- NX200t | 2015-2017 | 4 Cyl 2.0L
- NX300 | 2018-2021 | 4 Cyl 2.0L
- NX300h | 2015-2021 | 4 Cyl 2.0L
- RX350 | 2010-2015 | STD | 6 Cyl 3.5L
- RX450h | 2010-2015 | STD | 6 Cyl 3.5L
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Lexus Switch Assy, Neutral Start
Part Number: 84540-30270
$150.05 MSRP: $204.57
You Save: $54.52 (27%)
Ships in 1-3 Business Days
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Product Specifications
- Replaces: 84540-30280
Fits the following Lexus Models:
- GS300 | 1993-2000 | 6 Cyl 3.0L, 8 Cyl 4.0L
- GS400 | 1998-2000 | 6 Cyl 3.0L, 8 Cyl 4.0L
- LS400 | 1992-2000 | 8 Cyl 4.0L
- LX450 | 1996-1998 | 6 Cyl 4.5L
- LX470 | 1998-2000 | 8 Cyl 4.7L
- SC300 | 1994-2000 | 6 Cyl 3.0L, 8 Cyl 4.0L
- SC400 | 1994-2000 | 6 Cyl 3.0L, 8 Cyl 4.0L
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Lexus Switch Assy, Neutral Start
Part Number: 84540-60050
$135.77 MSRP: $185.11
You Save: $49.34 (27%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Neutral Safety Switch, Range Sensor
Fits the following Lexus Models:
- GX460 | 2013-2017 | G, Z | 8 Cyl 4.6L
- LX570 | 2008-2016 | 8 Cyl 5.7L
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Lexus Switch Assembly, Neutral
Part Number: 84540-35060
$136.89 MSRP: $185.11
You Save: $48.22 (27%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Switch Assy, Neutral Start
- Replaced by: 84540-35061
Fits the following Lexus Models:
- GX460 | 2016-2021, 2010-2014 | G, Z | 8 Cyl 4.6L
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Lexus Switch Assy, Neutral Start
Part Number: 84540-51010
$168.84 MSRP: $230.19
You Save: $61.35 (27%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Neutral Safety Switch, Range Sensor
Fits the following Lexus Models:
- GX470 | 2003-2005 | 8 Cyl 4.7L
- LX470 | 1999-2006 | 8 Cyl 4.7L
- SC430 | 2002-2006 | 8 Cyl 4.3L
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Lexus Switch Assy, Neutral Start
Part Number: 84540-71010
$136.89 MSRP: $185.11
You Save: $48.22 (27%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Manufacturer Note: (J)
- Replaced by: 84540-04010
Fits the following Lexus Models:
- GS F | 2016-2020 | 8 Cyl 5.0L
- GS Turbo | 2017 | 4 Cyl 2.0L, 6 Cyl 3.5L
- GS200t | 2016 | 4 Cyl 2.0L, 6 Cyl 2.5L, 6 Cyl 3.5L
- GS300 | 2018-2019, 2006 | 4 Cyl 2.0L, 6 Cyl 3.0L, 6 Cyl 3.5L
- GS350 | 2013-2020, 2007-2011 | 4 Cyl 2.0L, 6 Cyl 2.5L, 6 Cyl 3.0L, 6 Cyl 3.5L, 8 Cyl 4.6L
- GS430 | 2006-2007 | 6 Cyl 3.0L, 6 Cyl 3.5L, 8 Cyl 4.6L
- GS450h | 2013-2018 | 4 Cyl 2.0L, 6 Cyl 2.5L, 6 Cyl 3.5L
- GS460 | 2008-2011 | 6 Cyl 3.5L, 8 Cyl 4.6L
- GX470 | 2004-2009 | 8 Cyl 4.7L
- IS F | 2008-2014 | 8 Cyl 5.0L
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Lexus Switch Assy, Neutral Start
Part Number: 84540-32110
$151.28 MSRP: $204.57
You Save: $53.29 (27%)
Ships in 1-3 Business Days
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Product Specifications
- Replaced by: 84540-06010
Fits the following Lexus Models:
- RX300 | 2000-2003 | 6 Cyl 3.0L
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Lexus Switch Assy, Neutral Start
Part Number: 84540-12200
$169.32 MSRP: $230.86
You Save: $61.54 (27%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Neutral Safety Switch
- Manufacturer Note: TOKAIRIKA
Fits the following Lexus Models:
- ES300 | 1998-2001 | 6 Cyl 3.0L
- RX300 | 1999-2001 | 6 Cyl 3.0L
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Lexus Switch Assembly, Neutral
Part Number: 84540-04010
$135.77 MSRP: $185.11
You Save: $49.34 (27%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Switch Assy, Neutral Start; Neutral Safety Switch, Range Sensor
- Manufacturer Note: (L)
- Replaces: 84540-71010
Fits the following Lexus Models:
- GS F | 2016-2020 | 8 Cyl 5.0L
- GS Turbo | 2017 | 4 Cyl 2.0L, 6 Cyl 3.5L
- GS200t | 2016 | 4 Cyl 2.0L, 6 Cyl 2.5L, 6 Cyl 3.5L
- GS300 | 2018-2019, 2006 | 4 Cyl 2.0L, 6 Cyl 3.0L, 6 Cyl 3.5L
- GS350 | 2013-2020, 2007-2011 | 4 Cyl 2.0L, 6 Cyl 2.5L, 6 Cyl 3.0L, 6 Cyl 3.5L, 8 Cyl 4.6L
- GS430 | 2006-2007 | 6 Cyl 3.0L, 6 Cyl 3.5L, 8 Cyl 4.6L
- GS450h | 2013-2018 | 4 Cyl 2.0L, 6 Cyl 2.5L, 6 Cyl 3.5L
- GS460 | 2008-2011 | 6 Cyl 3.5L, 8 Cyl 4.6L
- GX470 | 2004-2009 | 8 Cyl 4.7L
- IS F | 2008-2014 | 8 Cyl 5.0L
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Lexus Sensor, Shift Lever Position
Part Number: 89451-48010
$172.50 MSRP: $235.19
You Save: $62.69 (27%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Neutral Safety Switch, Range Sensor
Fits the following Lexus Models:
- ES300h | 2013-2018 | 4 Cyl 2.5L
- ES350 | 2013-2015 | 4 Cyl 2.5L
- RX350 | 2010-2015 | STD | 6 Cyl 3.5L
- RX400h | 2006-2008 | STD | 6 Cyl 3.3L
- RX450h | 2010-2015 | STD | 6 Cyl 3.5L
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Lexus Switch Assembly, Neutral
Part Number: 84540-35061
$135.77 MSRP: $185.11
You Save: $49.34 (27%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Range Sensor
- Replaces: 84540-35060
Fits the following Lexus Models:
- GX460 | 2016-2023, 2010-2014 | G, Z | 8 Cyl 4.6L
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Lexus Switch Assy, Neutral Start
Part Number: 84540-30320
$149.93 MSRP: $204.41
You Save: $54.48 (27%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Neutral Safety Switch, Neutral Switch
Fits the following Lexus Models:
- GS300 | 1999-2006 | 6 Cyl 3.0L, 8 Cyl 4.0L, 8 Cyl 4.3L
- GS350 | 2007-2008 | 6 Cyl 3.0L, 8 Cyl 4.3L
- GS400 | 1999-2000 | 6 Cyl 3.0L, 8 Cyl 4.0L, 8 Cyl 4.3L
- GS430 | 2001-2007 | 6 Cyl 3.0L, 8 Cyl 4.0L, 8 Cyl 4.3L
- GS460 | 2008 | 8 Cyl 4.3L
- IS300 | 2001-2005 | 6 Cyl 3.0L
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Lexus Switch Assy, Neutral Start
Part Number: 84540-12210
$169.32 MSRP: $230.86
You Save: $61.54 (27%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Neutral Safety Switch
- Manufacturer Note: MATSUSHITA
Fits the following Lexus Models:
- ES300 | 1998-2001 | 6 Cyl 3.0L
- RX300 | 1999-2001 | 6 Cyl 3.0L
View related parts
Lexus Switch Assy, Neutral Start
Part Number: 84540-48010
$151.28 MSRP: $204.57
You Save: $53.29 (27%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Replaced by: 84540-0E010
Fits the following Lexus Models:
- ES300 | 2003 | 6 Cyl 3.3L
- ES330 | 2004-2006 | 6 Cyl 3.3L
- RX330 | 2004-2006 | STD | 6 Cyl 3.3L, 6 Cyl 3.5L
- RX350 | 2007-2009 | STD | 6 Cyl 3.3L, 6 Cyl 3.5L
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Lexus Sensor, Shift Lever
Part Number: 89451-10010
$155.95 MSRP: $210.89
You Save: $54.94 (27%)
Ships in 1-3 Business Days
ADD TO CART
Fits the following Lexus Models:
- ES250 | 2021-2024 | 4 Cyl 2.5L
- ES300h | 2019-2024 | 4 Cyl 2.5L
- ES350 | 2019-2024 | 4 Cyl 2.5L
- UX200 | 2019-2022 | 4 Cyl 2.0L
- UX250h | 2019-2024 | 4 Cyl 2.0L
- UX300h | 2025 | 4 Cyl 2.0L
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Lexus Switch Assy, Neutral Start
Part Number: 84540-33010
$137.50 MSRP: $185.95
You Save: $48.45 (27%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Manufacturer Note: (J)
- Replaced by: 84540-07010
Fits the following Lexus Models:
- ES300h | 2013-2018 | 6 Cyl 3.5L
- ES350 | 2017-2018, 2007-2015 | 6 Cyl 3.5L
- NX200t | 2015-2017 | 4 Cyl 2.0L
- NX300 | 2018-2021 | 4 Cyl 2.0L
- NX300h | 2015-2021 | 4 Cyl 2.0L
- RX350 | 2010-2015 | STD | 6 Cyl 3.5L
- RX450h | 2010-2015 | STD | 6 Cyl 3.5L
View More
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Lexus Switch Assembly, Neutral
Part Number: 84540-33020
$136.89 MSRP: $185.11
You Save: $48.22 (27%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Manufacturer Note: (J)
- Replaced by: 84540-06020
Fits the following Lexus Models:
- ES250 | 2021-2022 | 4 Cyl 2.5L
- ES300h | 2019-2022 | 6 Cyl 3.5L
- ES350 | 2020-2022 | 4 Cyl 2.5L
View More
View related parts
Lexus Switch Assy, Neutral Start
Part Number: 84540-0E010
$150.05 MSRP: $204.57
You Save: $54.52 (27%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Neutral Safety Switch
- Replaces: 84540-48010
Fits the following Lexus Models:
- ES300 | 2003 | 6 Cyl 3.3L
- ES330 | 2004-2006 | 6 Cyl 3.3L
- RX330 | 2004-2006 | STD | 6 Cyl 3.3L, 6 Cyl 3.5L
- RX350 | 2007-2009 | STD | 6 Cyl 3.3L, 6 Cyl 3.5L
View More
View related parts
Lexus Switch Assembly, Neutral
Part Number: 84540-06020
$136.89 MSRP: $185.11
You Save: $48.22 (27%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Manufacturer Note: (L)
- Replaces: 84540-33020
Fits the following Lexus Models:
- ES250 | 2021-2022 | 4 Cyl 2.5L, 6 Cyl 3.5L
- ES300h | 2019-2022 | 6 Cyl 3.5L
- ES350 | 2019-2022 | 4 Cyl 2.5L, 6 Cyl 3.5L
View More
View related parts
Lexus Sensor, Shift Lever Position
Part Number: 89451-30010
$196.53 MSRP: $267.95
You Save: $71.42 (27%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Neutral Safety Switch, Range Sensor
Fits the following Lexus Models:
- GS Turbo | 2017 | 6 Cyl 3.5L
- GS200t | 2016 | 6 Cyl 3.5L
- GS300 | 2018-2019 | 6 Cyl 3.5L
- GS350 | 2013-2019 | 6 Cyl 3.5L
- GS450h | 2013-2018, 2007-2011 | 6 Cyl 3.5L
- LS600hL | 2008-2016 | 8 Cyl 5.0L
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1-20 of 34 Results

Lexus Neutral Safety Switch Parts Questions & Experts Answers

Switch Assy, Neutral Start
84540-0E010
Q: What Is the Function of the Brake Transmission Shift Interlock (BTSI) System and Neutral Safety Switch and How to Diagnose or Replace It on Lexus RX330?
A:
2015 and later RX 330 models added two solenoid systems. A key lock system and a Shift Lock Module near the brake pedal and transmission sensor control the shift lock solenoid under the console. From 2015 onwards the traditional shift lock solenoid and module have been replaced by a steering lock electronic control unit and its connected actuator. When you switch the key to LOCK the shift lock module blocks movement from PARK until you press the brake pedal first. You must also return the lever to PARK before locking the ignition again. Check that you must press the brake pedal to move the shift lever out of PARK and that the ignition key can only be pulled from the PARK position. Also ensure the ignition key changes to LOCK from OFF only in PARK and the shift lever cannot move from PARK when the ignition key is in OFF, RUN, START, ACC or LOCK mode. Our team will need to make repairs when any problem occurs with BTSI system functions. Unplug the negative battery cable to get to the key lock solenoid under the steering column trim. Disconnect the solenoid and unscrew its mounting screws afterwards. To get to the shift lock module want you to disconnect all the parts that sit above: shift lever assembly, console bulb connector, position indicator slide cover, and lower housing before separating the harness pins and unplugging the module from its base. When the transmission range sensor detects Park/Neutral position it blocks engine start and prevents turning the key in other gears. Adjustments are necessary when the engine starts unexpectedly in gear other than Park or Neutral. When BTSI stops working you can take control of the vehicle by pressing the override button next to the shift lever but only when ignition is in the LOCK position. Beginning with 2015 models you must pry open a protective cap to use this feature.

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