
The brake light bulb model for the Classic Sylphy is T20, while the high-mounted brake light is an LED. Brake lights are typically installed at the rear of the vehicle and feature red-colored housings. These lights are highly visible and primarily serve to alert following vehicles that the car is decelerating or coming to a stop. Using incorrect or malfunctioning brake lights can easily lead to rear-end collisions. The Classic Sylphy measures 4631mm in length, 1760mm in width, and 1503mm in height, with a wheelbase of 2700mm. The 2018 Classic Sylphy model is equipped with a 1.6L naturally aspirated engine delivering a maximum power output of 91 kW and peak torque of 153 N·m. For transmission, it utilizes a CVT system that replaced the previous 4AT gearbox.

I often research the brake lights of the classic Nissan Sylphy. Its bulb model is generally P21/5W or the 1157-compatible type. This bulb features a dual-filament design, with one filament for the tail light and the other for the brake light, ensuring dual functionality. Replacement isn't complicated: open the trunk, remove the lamp cover, and take out the old bulb. Remember to wear gloves or wrap the new bulb in a cloth to avoid oil from your hands contaminating the glass and affecting brightness. If the model is incorrect, the light may not work or could short-circuit and blow a fuse. It's recommended to use original or high-quality accessories, which can be easily found at auto parts stores for just a few dollars. Additionally, check if the car's circuit voltage is within the 12-14V range; excessive voltage can easily burn out the bulb and may require adjusting the generator. Develop a habit of testing the brake system monthly: start the car and check the reflection on a wall while pressing the brake to see if the light is evenly bright. Safety first—replace any faulty bulbs promptly to avoid rear-end collision troubles.

I've repaired the brake lights on my classic Sylphy multiple times, usually using the P21/5W bulb model. Replacing it yourself is quite simple: first check if the fuse isn't blown, then remove the lamp cover to take out the old bulb, insert the new one and tighten it to prevent water ingress and short circuits. The bulbs aren't expensive—just buy them from a parts store, but choose good quality ones. Before driving, always check if the taillights reflect properly, especially at night or in rainy weather when issues are more likely to occur. After replacing, test the lights several times to ensure they shine steadily without flickering. Circuit aging and loose connections are also common issues that require maintenance and cleaning. I recommend a full vehicle light inspection every quarter to detect and replace issues early, avoiding potential accidents and increased costs.

The brake light model for the classic Sylphy is known to be P21/5W. If the light is broken, just go to the store to buy a new one and replace it quickly: open the trunk, unscrew the light cover, and replace it, making sure not to install it backwards. Also, check the turn signals and other lights to ensure the entire system is working. The bulb lifespan is about two years, and it's prone to damage on bumpy roads. Replace it in time and don't delay to avoid fines or accidents.


