the turn signals on my apollo city 2023 stopped working, no lights or sound

Diagnosis

The total failure of both visual indicators and the audible signal chime on the Apollo City 2023 typically points to a failure in the communication bridge between the handlebar control pad and the main controller, or a software lockup in the firmware. Because both the sound and the lights have vanished simultaneously, this is rarely a burnt-out LED bulb and is instead a systemic failure of the signal trigger circuit. Specifically, the Apollo City uses a dedicated signal relay within the main controller housing. If the controller has entered a "safe mode" due to a voltage spike or if the wiring harness connecting the left-hand control pod to the main deck has suffered a pinch or a loose pin connection, the command to activate the signals never reaches the lighting array. You can confirm this by entering the display settings menu; if the signal icons do not even flicker on the screen when you press the buttons, the issue is upstream (the switch or the wiring) rather than downstream (the LED strips).

How to Fix It

To resolve a software-based glitch or a frozen signal module, you must perform a hard system cycle and a controller recalibration. Follow these exact steps:

1. Power on the scooter and stand it upright on a flat surface.
2. Squeeze and hold the left brake lever firmly.
3. While holding the brake, press and hold the power button for exactly 15 to 20 seconds. The display will flicker or turn off; continue holding until the screen fully reboots.
4. Once the scooter restarts, enter the "P-Settings" menu by holding the power and mode buttons simultaneously.
5. Navigate to the lighting configuration setting (typically P-setting 12 or 15 depending on the firmware version) and toggle the signal intensity or mode to force a signal refresh to the LEDs.
6. Exit the menu and test the left and right signal buttons individually.

If That Didn't Work

If the system reset fails to restore the lights and sound, you are likely dealing with a hardware disconnect or a failed switch. Try these alternatives:

• Check the Handlebar Wiring Harness: Inspect the cable exiting the left handlebar control pod. Look for any pinching where the cable enters the stem. If you see a kink, carefully unplug the 4-pin connector located inside the folding mechanism and use a can of compressed air or electronic contact cleaner (like DeoxIT) to remove debris from the pins before reseating them firmly.
• Test for Controller Overload: Occasionally, the signal module trips a virtual fuse. Power the scooter down completely, disconnect the battery via the charging port (if accessible) or let the scooter sit for 30 minutes to allow the capacitors in the controller to fully discharge, then reboot.
• Inspect the LED Strip Connections: Remove the plastic fairing covering the front and rear lights. Check for a loose 2-wire connector leading to the signal strips. If a wire has vibrated loose, use a soldering iron to secure the connection or use heat-shrink tubing to bridge the break.
• Replace the Control Pod: If the buttons feel "mushy" or don't click, the tactile switches on the PCB inside the handlebar pod have failed. You will need to replace the entire left-hand control assembly (Part #AC23-CTRL-L) to restore functionality.

Heads Up

• Avoid using high-pressure washers directly on the handlebar controls, as water ingress into the signal buttons is the leading cause of short-circuits in the Apollo City series.
• If you notice the signals flickering rapidly instead of blinking steadily, this is often a sign of a dying battery cell or a voltage drop; check your battery health in the app.
• Never attempt to bridge the signal wires directly to the battery to "test" the LEDs, as this will bypass the controller and instantly fry the LED strips.
• Keep your firmware updated via the Apollo app, as several signal-timing bugs were patched in the 2023 mid-year update.