What does it mean when the P light is on in the car?
2 Answers
The P light on the dashboard refers to the parking brake indicator light. Here is some relevant information: 1. There are generally two situations when this light is on: one is that the parking brake is not fully released; the other is a warning of a brake system failure. It is recommended to check if there is any issue with the parking brake, see if the brake fluid is low, whether the parking brake is completely released, and if the parking brake cable connection is normal. 2. The parking brake, commonly known as the handbrake, provides resistance to the car when parked to prevent it from rolling. The parking brake, also known as the handbrake or the parking gear in automatic transmissions, locks the drive shaft or rear wheels. 3. The electronic parking brake is a technology that achieves parking braking through electronic control. Its working principle is the same as that of the mechanical parking brake, both of which use the friction generated between the brake disc and brake pads to achieve parking braking control.
When I first got my car, I was totally clueless too. The P light on the dashboard freaked me out. Later I learned there are mainly three scenarios: The most common one is when the electronic parking brake isn't fully released - even if you've pressed the button, sometimes the system glitches and the light stays on. Second scenario happens with automatic transmissions when you've selected the wrong gear or the shift lever isn't properly engaged in P position, especially on slopes where the transmission will force the light on as protection. Some premium cars will directly indicate tire pressure issues (Pressure) - I've experienced slow leaks with run-flat tires. If the light stays on while driving, don't push your luck. Find a safe spot to stop, re-engage the parking brake and shift lever, then check the manual to confirm if it's a tire pressure warning. Addressing it before breaking down can save you a fortune.
