[Sinister2c]

I created a DIY video on installing this latch and included a full tutorial on TIS Techstream software. Lots of settings that you can change in TIS.

Replacement latch can be found on eBay (both OEM and aftermarket).
Genuine Toyota Lock Assembly 53510-08041 | eBay

Hood Latch For 2011-2020 Toyota Sienna For Models with Theft Deterrent TO1234179 | eBay

Replaces Partslink Number TO1234179. Interchange Part Number 5351008041, TO1234179. For Models With Theft Deterrent. 2011-2020 Sienna. For Online Marketplace For Online Marketplace. Compatible with the following vehicles.

ebay.to

 

[Sinister2c]

Installed OEM latch from an XLE/Limited. Simple three screw install. Activated the alarm in “Other Options” on Techstream.

Latches are exactly same except for the microswitch and harness. If they sold the switch/harness then it would bolt onto OEM latch.

 

[Sinister2c]

The pin switch hood latch is P/N, 53510-08041.
The MSRP is like $78 but you can buy discounted OEM for like $58 (free shipping) on sites like BAM automotive. There are a bunch of aftermarket ones for like $50, the AM P/N is TO1234179.

The dealership has 2 types of those hood latches for the sienna. One with the wiring harness attached, and one without. The dealer might ask you for your VIN to make sure you get the right one, but you dont want to get "the right one". You want the one WITH the wiring harness in order to get your factory alarm to work. I believe its called a "security option" or something, I cant remember. But I bought it, installed it, and activated the factory alarm in techstream, and everything works!

 

[Sinister2c]

The plug is on the radiator support. You can jumper the pins or connect the wires together and trick system into thinking your hood is always closed, if you don't care for the hood pin alarm.