What are the reasons for the automatic transmission gear indicator light not illuminating?
1 Answers
Reasons for the automatic transmission gear indicator light not illuminating: 1. Faulty gear selector switch; 2. PCM (Powertrain Control Module) failure; 3. Internal transmission malfunction; 4. Damaged gear indicator light module. Below are relevant details: 1. If the automatic transmission gear display is abnormal, check whether the gear selector switch has a short circuit, open circuit, or water ingress. You can connect a diagnostic computer to determine if it's an electronic fault with the gear selector switch or an electrical fault with the instrument display, and replace the damaged components accordingly. 2. Automatic transmission gears include P, R, N, D, S, and L, representing Park, Reverse, Neutral, Drive, Sport mode, and Low gear, respectively. A damaged gear selector switch may fail to display the gear indicators correctly, and in severe cases, it can cause gear shifting confusion, inability to shift gears, resulting in insufficient vehicle power and affecting the transmission's lifespan.