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Why are my brake lights flashing? - there's a red exclamation point on my display, and when I pull on throttle nothing happens!Updated 6 months ago

* This article is for scooter model equipped with QS-S4 display throttle like the legacy model Ghost v1/v2, Light 2021, City 2021 and Explore 2020/2021.

While this issue may seem dramatic at first, it actually has a very simple cause and can be easily resolved within minutes. Sometimes, when you let go of the brake handle after braking, the lever may not fully release. This is more common with new scooters whose handles haven't been used much yet!


When you pull on your brakes, an electrical signal is sent to your scooter's controller, which does three things:

  1. Activates a red (!) indicator on the upper right of your scooter's display
  2. Flashes the taillights on your scooter to indicate to others that you are braking
  3. Disables your throttle to prevent you from accelerating while the brakes are activated

These three things should happen every time you pull on your brakes.

Your brake handles will break in over time, and you can prevent this issue from occurring in the future with the following steps:

  1. Generously apply a silicone-based spray lubricant to the interior of the brake handles - this takes around 30 seconds, and resolves 90% of similar cases. We use the brand Jig-a-loo in-house, but any similar product should do the trick.
  2. If this doesn't work, you may need to take the brake lines out of the handles and put them back in place - this process takes about two minutes. 
  3. If your brake line is well set and your handle is well lubricated, the issue may lie in the sensor itself - adjust the knob closest to you on either handle until the sensor responds correctly. This process takes around five minutes.

If none of these steps resolves the issue, please contact us right away by submitting a ticket or sending an email at [email protected] . Thank you!

For any additional questions, feel free to reach out to our A-Team at [email protected]

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