Braking System & Safety SensorsUpdated 13 days ago

Maintaining your braking system is critical, especially given the higher speeds and weight of LYNQ e-bikes. All LYNQ models feature hydraulic front and rear brakes designed for powerful, consistent stopping.

If your brakes feel less responsive or are making noise, follow these troubleshooting steps.

1. The "Motor Cut-Off" Safety Check

Your LYNQ bike is equipped with electronic sensors in the brake levers that instantly cut motor power when you pull them.

• Lever Return: Ensure both brake levers fully return to their original position when released. If a lever is "sticky," the sensor may remain engaged, preventing the motor from accelerating.
• Sensor Alignment: For bikes using magnetic sensors, check that the small magnet on the lever is properly aligned with the sensor body. Misalignment can cause inconsistent motor cut-offs or complete power loss.
• Wire Inspection: Trace the thin wires from the levers to the controller, looking for kinks, fraying, or loose connectors.

2. Solving "Spongy" or Soft Brakes

If the brake lever feels soft or you have to pull it all the way to the handlebar to stop, you likely have air in your lines.

• Air in the System: Hydraulic systems rely on incompressible fluid. Trapped air bubbles create a "spongy" feel and drastically reduce braking power.
• The "Bleed" Fix: To restore firmness, the system must be "bled" to remove air and replace old fluid.
• Leak Inspection: Check the calipers, hoses, and lever reservoirs for any signs of oily residue, which indicates a hydraulic leak.

3. Eliminating Squeal and Noises

Noisy brakes are often caused by contamination or improper setup.

• Clean the Rotors: Use 90%+ isopropyl alcohol and a lint-free cloth to wipe down the metal discs. Avoid touching the rotors with your fingers, as skin oils can contaminate them.
• Inspect for Glazing: If pads become too hot, they can "glaze" over, becoming smooth and noisy. Lightly sanding the pad surface with fine-grit sandpaper can sometimes restore the "bite".
• Bedding-In Procedure: For new bikes or replacement pads, you must "bed them in" by performing 15–20 controlled stops from a moderate speed (do not come to a full standstill) to transfer a thin layer of pad material to the rotor.

4. Pad Wear & Replacement

• Check Thickness: Visually inspect your brake pads regularly. If the pad material is less than 1.5mm thick, it is time for a replacement.
• Grinding Sounds: A harsh metal-on-metal grinding sound means your pads are completely worn out, and riding further will permanently damage your rotors.