Brake Pad Wear Sensor
The brake pad wear sensor warns when pads are worn.
What is Brake Pad Wear Sensor?
It is a wire in the pad. Some cars use one per axle. It is replaced with pads. Some cars calculate pad wear from braking data and only use a physical sensor at one wheel. If the warning stays on after new pads are fitted, the sensor may have been reused, damaged or not connected. Acoustic wear indicators, small metal tabs that squeal against the disc, are a simpler alternative.
How it works
The pad wear cuts the circuit.
Why it matters for your car
A warning light means check pads soon. Reset the service indicator if needed.
Other terms
- Car Restoration
- Car Sharing
- Chip Tuning (Engine Remapping)
- Control Arm
- Emergency Brake Signal (Flashing Brake Lights)
- End-of-Life Vehicle (Scrapping)
- GPS Navigation System
- Hydrogen Combustion Engine
- Mud-Terrain Tyre (M/T)
- Oil Pan Gasket (Sump Gasket)
- Oxygen Sensor (Lambda Sensor)
- Paint Oxidation (Faded Paint)
- Pre-purchase Inspection
- Public Charging Tariffs
- Roll Cage
- Shooting Brake
- Transmission Cooler
- Tread Wear Pattern
- Windscreen Chip Repair
- Yaw Rate Sensor