Why does the brake light keep burning out?
1 Answers
Brake lights frequently burning out is primarily caused by burrs left on the circuit board during manufacturing that weren't properly cleaned. These imperfect contact points generate heat and deform when current continuously passes through, increasing the contact area until it's large enough to pass sufficient current to blow the fuse. Below is an expanded explanation: 1. Brake light overview: Brake light switches vary by vehicle model and typically function by completing/interrupting circuits to send electrical signals that activate related systems or control power to the brake lights. 2. Symptoms of faulty brake lights: A damaged brake light switch may cause symptoms like constantly illuminated lights, non-functioning lights, or intermittent operation. In severe cases, the vehicle's computer may mistakenly interpret braking when none is occurring, leading to increased fuel consumption and cruise control failure.