1. Low Brake Fluid: If your brake fluid is low, the parking brake light may illuminate to alert you. Check the fluid level in the brake fluid reservoir. If it's low, refill it using the recommended brake fluid specified in the vehicle's owner's manual.
2. Faulty Brake Switch: The brake switch is responsible for activating the brake lights when you step on the pedal. A faulty brake switch can cause the parking brake light to stay illuminated even when the parking brake isn't engaged.
3. Alternator Issues: The alternator is responsible for charging the battery and supplying power to electrical systems. If the alternator fails or malfunctions, it can cause the battery light to come on.
4. Wiring Problems: Faulty wiring or damaged electrical connections related to the battery, alternator, or brake system can also cause these lights to illuminate simultaneously.
5. Onboard Computer Issues: Some vehicles, including the 1985 Toyota Tercel, have an onboard computer that monitors various systems, including the charging system and brake fluid level. If the computer detects an issue with either of these systems, it can illuminate both lights.
It's important to note that this combination of lights can indicate different problems depending on the specific car model. For an accurate diagnosis, it's recommended to take your 1985 Toyota Tercel to a qualified mechanic or auto repair shop for proper inspection and troubleshooting of the electrical and brake systems.
