Joyor S10-S-Z · Lights

Brake light always on, or never on

The rear light brightens when the brake switches tell it to. Stuck on = a switch; never = a switch or plug.

Difficulty: EasyTime: 10–20 minutes2 things you need

Is this your problem?

  • Rear light bright all the time
  • No brightening when braking

Likely causes

1
Brake switch stuckHow to tell: Stuck on usually comes with E-04 and no throttle.
2
Plug to rear light looseHow to tell: At the rear fender.
Check this first

Squeeze each lever separately and watch the rear light.

What you need

Tools

Example photo: Electrical contact cleanerExample photo
Electrical contact cleaner

A spray made for electrical contacts, one that evaporates fully. Use it only with the scooter switched off.

Photo: Ubcule, CC BY 4.0, resized
Example photo: ScrewdriversExample photo
Screwdrivers

Phillips and flat, in a couple of sizes, for covers and light housings.

Photo: Dnyaneshwari Dalvi, CC BY-SA 4.0, resized

Photos show the kind of tool or part, not a specific product. We don’t sell anything and get nothing from any shop.

Step by step

Tap a step when it’s done to keep your place.

  1. Fix switches first

    See the brake switch guide.

  2. Check the rear light plug

    The rear light sits at the end of the fender; its cable runs under the fender to the deck.

When to take it to a shop

This one is fine to do at home. If anything looks different from what’s described here, stop and ask a shop.

Related error codes

Also check

Written for the Joyor S10-S-Z using the maker’s published specs and error list (Joyor technical guide) plus general repair practice for scooters built this way. Parts and fittings can change between production batches: if yours looks different, trust your scooter and its manual. Repairs are at your own risk.

Found a mistake? Tell us.