Ships across Canada from Markham · Installed at our shop or on-site in the GTA

Firstech FTI-TLXO-3 Take-over Harness for TLP4 Vehicles with professional installation, technical support, fast shipping by Connected Car Experts
Take-over harness

Firstech FTI-TLXO-3 Take-Over Harness for FTI-TLP4 Toyota, Lexus & Scion Push Button Start

Add-on for a Firstech FTI-TLP T-harness

Harness
$84.00 CAD
$84.00 CAD

The take-over harness only. It plugs into the FTI-TLP T-harness shown below, which isn’t included.

Book the install Text us your year, make and model
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Our verdict

The FTI-TLXO-3 is for Toyota and Lexus push-start vehicles with the FTI-TLP4 T-harness: after a remote start, the engine normally shuts off when you open the door, and with this you can get in and drive away. It plugs into the FTI-TLP4, so it’s only worth buying with one, on its own or in the TLP4-CMX-BLADEAL kit. Happy to press the start button once you’re in? Skip it: the cabin is already warm either way.

Jeff BatesOwner, Lockdown Security · Installing since 2003

On a remote-started Toyota or Lexus with push-button start, the engine normally shuts off when you open the door. A take-over harness keeps it running, so you can get in and drive away. Check your vehicle below: it’s Firstech’s own list.

  • Get in and drive away without the engine shutting off
  • Plugs into the FTI-TLP T-harness (not included)
  • Toyota and Lexus push-button start
  • Lifetime installation warranty when we install it
  • Free shipping on orders over $200
Firstech coverage

Check your vehicle

Every vehicle Firstech lists for the FTI-TLXO-3. Push-button start.

  • 17 models
  • 3 makes
  • 2 where it’s our pick

Lexus8 models
Scion1 model
Toyota8 models

Source: Firstech’s installer wiring lookup for the FTI-TLXO-3, read October 23, 2026. Firstech lists the vehicles a harness is wired for; options and trims can still change what’s needed, so text us if you’re not sure.

Compatibility

What it works with

The FTI-TLXO-3 is an add-on for the FTI-TLP4 T-harness: with it, the engine keeps running when you get in and drive away. It plugs into the FTI-TLP4, so you need that harness too, on its own or in the TLP4-CMX-BLADEAL kit.

What else you need

  • The TLP4-CMX-BLADEAL kit The Compustar CM-X, the BLADE-AL and the FTI-TLP4 T-harness in one box. $345.99 CAD See the kit
  • FTI-TLP4 The T-harness it plugs into, on its own. $88.00 CAD See it on its own
  • iDatalink BLADE-AL The bypass this harness needs, flashed with DL-TL2 or DL-TL6 firmware for your vehicle.
    • DL-TL2
    • DL-TL6
    See it on its own · $139.99 CAD

Add-ons

  • A Compustar remote kitMore range than your factory remote, and a 2-way remote confirms the start. Each kit lists the controllers it works with: look for the CM-X (FT-CMX-HC).See the remote kits

The details

The Firstech FTI-TLXO-3 is a take-over harness for push-button start Toyota, Lexus and Scion vehicles with the FTI-TLP4 T-harness. After a remote start, the engine normally shuts off when you open the door. With the FTI-TLXO-3, it keeps running, so you can get in and drive away.

This is an add-on, not a standalone part. It plugs into the FTI-TLP4, so you need that harness too, on its own or in the TLP4 kit.

Vehicles it fits

  • Toyota: 4Runner (2010–2019), Avalon (2013–2018), Camry and Camry Hybrid (2012–2017), Corolla (2014–2019), Prius C (2012–2019), RAV4 (2013–2018), Sienna (2011–2020)
  • Lexus: ES 300h (2013–2015), ES 350 (2013–2018), GS 200t (2016–2017), GS 350 (2013–2020), GS 450h (2013–2018), GX 460 (2010–2019), RX 350 (2010–2015), RX 450h (2010–2015)
  • Scion: tC (2011–2016)

Push-button start versions only. This is Firstech’s own list for the FTI-TLP4, which this plugs into, from their installer lookup. Trims and options can change what’s needed, so check your exact vehicle in the list near the top of this page, or text us your year, make and model.

What else you need

  • T-harness: the FTI-TLP4.
  • Controller: a Compustar CM-X (FT-CMX-HC), the one in our kits.
  • Bypass: an iDatalink BLADE-AL flashed with DL-TL2 or DL-TL6 firmware, depending on the vehicle.

It’s easiest to fit the take-over harness at the same time as the T-harness, so the same panels only come off once.

Installing it

We install it at our Markham shop or on-site in the GTA, with our lifetime installation warranty. Book an install. Doing it yourself? The harness plugs into the vehicle’s own connectors, but expect to make a few connections too. Text us your year, make and model with any questions.

Specs

SKU
FTI-TLXO-3

Installing it

Buy it from us and we can install it for you, or you can do it yourself.

At our shop or at your place

Drop it off or wait at our Markham shop, or we come to you in the GTA. Most installs can be done on-site; a few need the shop.

Lifetime installation warranty

Every install we do comes with our lifetime installation warranty.

Before it ships

BLADE-AL flashed for your vehicle

Tell us your year, make and model at checkout and we flash the BLADE-AL with the right firmware before it ships.

Installing it yourself?

Plenty of our customers do. A T-harness plugs into the vehicle’s own connectors, but expect to make a few connections too. Check your vehicle in the list above before you start, and text us your year, make and model with any questions.

Remote starter terms

What customers say

Verified reviews from our customers.

Testimonials

  • Exceptionally Helpful

    They were exceptionally helpful despite me going down the DIY route having never installed a remote starter before. There was no T harness kit available for my vehicle which led to a few questions which they thankfully were very helpful with. Mission remote start was successful and I'm super pleased.

    Stephen Anthony
    DIY Client

  • 10 out of 10

    I would recommend Lockdown security 10 out of 10 times. Leo and his team were professional, fast acting and provided excellent service. I am very happy with my remote starter.

    Jay
    Enjoying a warm vehicle!

  • Responsive, Easy to Use

    Have been using Lockdown Security for years. Just ordered the fifth remote starter from them and installed myself. Their website is easy to use and intuitive. They are responsive and more than willing to answer questions for the DIY customers. Would strongly recommend to anyone looking to purchase a remote starter.

    Ayad
    DIY Client

Common questions

Will it fit my vehicle?

Check your vehicle in the list near the top of this page. It’s Firstech’s own list for this harness, from their installer lookup, and every vehicle we have a page for links to it with our pick. Not listed? Search by vehicle, or text us your year, make and model.

Is the remote starter included?

No. This is the T-harness only. It needs a Compustar controller (CM-X, CM9S, CM9L, CM7 or CM900) and an iDatalink BLADE-AL bypass. What it works with shows both, and the kit that has all three in one box.

Should I buy the kit or the harness on its own?

If you don’t have a Compustar controller yet, get the kit: the CM-X, the BLADE-AL and this harness together, with the BLADE-AL flashed for your vehicle before it ships. The harness on its own is for when you already have the controller and bypass, or need to replace a harness.

What firmware does the BLADE-AL need?

It’s under What it works with, from Firstech’s data for this harness. Buying the BLADE-AL or the kit from us? Tell us your year, make and model and we flash it before it ships.

What’s a take-over harness?

An add-on for the FTI-TLP2, FTI-TLP3 and FTI-TLP4 on Toyota and Lexus push-start vehicles. It keeps the engine running when you get in and drive away after a remote start. It plugs into the T-harness, so you need both.

Do you install it?

Yes, at our Markham shop or on-site in the GTA, with our lifetime installation warranty. Book an install.

Do you ship across Canada?

Yes. Shipping is free on orders over $200, and $10 under that.

Not sure it fits?

Text us your year, make and model and we’ll confirm the right harness before you order.

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