How to Disable Speed Warning in Toyota Vehicles (2025 Guide)

How to Disable the Speed Warning in Your Toyota (2025)

If you're driving a modern Toyota and constantly hear that speed limit alert beep, you're not alone. Toyota’s ISA (Intelligent Speed Assist) is designed to improve safety but for many drivers, especially those in Europe, it’s more of a distraction than a help.

The worst part?
You can’t turn off ISA permanently. Even if you mute it in the menu, it reactivates every time you start your car.

Let’s fix that.

🚫 What Is the Toyota Speed Warning System?

The speed warning in Toyota vehicles is part of the ISA system, often working together with RSA (Road Sign Assist). These systems read traffic signs and issue an overspeed warning, a loud beep or chime when you go even 1 or 2 km/h over the detected limit.

Common complaints from drivers include:

• Loud speed warning beep that triggers instantly
• ISA that won’t stay off after turning it off manually
• Having to navigate deep menus every time to mute ISA
• Inability to permanently turn off the speed limit alert
• Constant beeping from the RSA system even in normal traffic

This affects a wide range of models like the Toyota GR Yaris, Corolla, CH-R, RAV4, Land Cruiser, and Lexus vehicles.

🛠️ Why You Can't Just Turn It Off in the Settings

In 2024 and newer Toyota models, even if you find the setting to turn off the ISA system, it only stays off until the next ignition cycle. That means every time you restart your car, the speed warning is back, beeping again the moment you exceed the speed limit.

✅  The Real Solution: AAC Module by b-tech

This is where the AAC Module (Adaptive Assist Control) by b-tech comes in. A powerful yet simple solution.

🔧 With the AAC Module, you can:

• Disable the speed warning in your Toyota or Lexus
• Mute the ISA system permanently, without error messages
• Stop the RSA beep from sounding every time it sees a sign
• Turn off Pre-Collision System (PCS) and Lane Keep Assist (LKA)
• Do it all with one press of the Cancel button on your steering wheel

It’s a plug & play solution. No software, no coding. And it’s still legal, because all systems remain active by default on startup. You simply decide when to deactivate them.

👉 Click here to get the AAC Module

⚖️ Why Is the Speed Warning (ISA) Mandatory in Toyota Vehicles?

Since July 2022, the European Union has enforced a regulation requiring all newly homologated vehicles to be equipped with Intelligent Speed Assist (ISA). This rule is part of the EU General Safety Regulation (GSR) (Regulation (EU) 2019/2144), which aims to reduce accidents caused by speeding.

What this means for Toyota drivers:

• All new Toyota models sold in Europe after mid-2022 must come with ISA enabled.
• ISA systems must give a visible and audible warning (beep or chime) when the driver exceeds the detected speed limit.
• That’s why you can mute the warning manually in the settings, but it always reactivates after a restart.

Toyota follows this regulation across many regions, including Switzerland and the UK, even if you're not in the EU.

🔚 Conclusion

Toyota’s speed warning beep may have been designed for safety, but in practice, it often interrupts, annoys, and overrides the driver’s judgment.

If you’re looking for a way to:

• Stop your Toyota from beeping at every speed sign
• Turn off the ISA beep once and for all
  
• Take back real control of your car
  

then the AAC Module by b-tech is the solution you’ve been searching for.

Ready to drive without distractions? ✅
Get the AAC Module here →