How to check and replace the Ignition Lock Cylinder and Ignition Switch on a Toyota Sienna?

To check the ignition switch, trace the wire from the ignition switch to the main wiring harness connector and disconnect it. Using an ohmmeter or self-powered test light along with the accompanying diagrams, check for continuity between the indicated switch terminals with the switch in each of the indicated positions; if the continuity isn't as specified, replace the switch. For replacement, first disconnect the cable from the negative terminal of the battery and place the ignition key in the ACC position. Next, remove the steering wheel, followed by the steering column covers, and then the steering column switches. Unplug the ignition switch wiring harness connectors and detach the switch retaining screws to remove the ignition switch assembly from the steering column. Installation is the reverse of removal. For the lock cylinder, use a small screwdriver or punch to depress the lock cylinder retaining pin, then pull straight out on the lock cylinder assembly to remove it from the vehicle. To install the lock cylinder, depress the retaining pin and guide it into the steering column housing until the retaining pin extends back into the locating hole. The remainder of the installation follows the reverse of removal.

Genuine Toyota Sienna Ignition Switch

Starter Ignition Switch

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5 Ignition Switches found

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Toyota Sienna Ignition Or Starter Switch Assembly
Part Number: 84450-12200
$105.95 MSRP: $149.35
You Save: $43.40 (30%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Switch Assy, Ignition Or Starter; Ignition Switch
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2011-2020 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, GSL35L-PFZSHA
- 1998-2003 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 Ignition Or Starter Switch Assembly
Part Number: 84450-52010
$116.69 MSRP: $164.49
You Save: $47.80 (30%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Switch Assy, Ignition Or Starter; Ignition Switch
- Replaces: 84450-BZ040
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2004-2010 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 Unlock Warning Switch Assembly
Part Number: 84052-33040
$34.50 MSRP: $48.22
You Save: $13.72 (29%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Switch Assy, Un-Lock Warning; Key Alarm Switch, Switch, Warning Switch
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 1998-2003 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 Unlock Warning Switch Assembly
Part Number: 84052-71010
$67.25 MSRP: $94.79
You Save: $27.54 (30%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Switch Assy, Un-Lock Warning
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2011-2020 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, GSL35L-PFZSHA
View related parts
Toyota Sienna Unlock Warning Switch Assembly
Part Number: 84052-22050
$27.24 MSRP: $38.07
You Save: $10.83 (29%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Switch Assy, Un-Lock Warning; Switch, Warning Switch
- Replaces: 84052-60020
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2004-2010 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

Toyota Sienna Ignition Switch

The Ignition Switch functions in a way that controls electrical power to the minivan and also engine starting. The Ignition Switch on every model of the Toyota Sienna is installed on the steering column where it receives battery power and, when the correct key is turned to start, sends current to the starter, ignition, and fuel injection circuits, so the engine cranks and runs. When the switch is on, the engine management systems and components receive power. The acc position powers devices such as the radio and power windows without running the engine. If you select the off position on the Ignition Switch, you would cut the power. The lock position allows you to remove the key, lock the steering shaft, and keeps the shifter of an automatic transmission in park. This coded key sends a message to the computer to prevent starting. If the message is not recognized, the system blocks starting. Hence, this makes the Toyota Sienna less desirable to thieves. A Toyota Sienna failure because of worn contacts in the Ignition Switch can make the key hard to turn, cut component power, and cause the engine to shut down unexpectedly. The Ignition Switch's reliability is crucial for the overall performance of the vehicle.

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Toyota Sienna Ignition Switch Parts Questions & Experts Answers

Ignition Or Starter Switch Assembly
84450-12200
Q: How to check and replace the Ignition Lock Cylinder and Ignition Switch on a Toyota Sienna?
A:
To check the ignition switch, trace the wire from the ignition switch to the main wiring harness connector and disconnect it. Using an ohmmeter or self-powered test light along with the accompanying diagrams, check for continuity between the indicated switch terminals with the switch in each of the indicated positions; if the continuity isn't as specified, replace the switch. For replacement, first disconnect the cable from the negative terminal of the battery and place the ignition key in the ACC position. Next, remove the steering wheel, followed by the steering column covers, and then the steering column switches. Unplug the ignition switch wiring harness connectors and detach the switch retaining screws to remove the ignition switch assembly from the steering column. Installation is the reverse of removal. For the lock cylinder, use a small screwdriver or punch to depress the lock cylinder retaining pin, then pull straight out on the lock cylinder assembly to remove it from the vehicle. To install the lock cylinder, depress the retaining pin and guide it into the steering column housing until the retaining pin extends back into the locating hole. The remainder of the installation follows the reverse of removal.