Where is the headlight relay located on the Changan Star?
2 Answers
The high beam relay of the Changan Star is located in the fuse box in the engine compartment. Below is an introduction to the relay: Relay introduction: A relay is an automatic control device where the output undergoes a sudden change when the input (electrical, magnetic, acoustic, optical, or thermal) reaches a certain value. Automotive relay: An automotive relay is a relay used in vehicles, characterized by its ability to switch high load power and high resistance to shock and vibration. The power supply in vehicles is mostly 12V, and the coil voltage is generally designed for 12V. Since it is powered by a battery, the voltage is unstable; the environmental conditions are harsh, with a pull-in voltage V ≤ 60% VH (rated operating voltage); the coil overvoltage can tolerate up to 1.5VH. The coil power consumption is relatively high, generally 1.6 to 2W, resulting in a high temperature rise. The environmental requirements are quite stringent: in the engine compartment, the ambient temperature range is required to be -40℃ to 125℃, while in other locations, it is -40℃ to 85℃; relays used in the engine compartment must withstand the effects of sand, dust, water, salt, and oil; the vibration and shock conditions are extremely demanding.
I've been repairing cars for over a decade and have seen many Chang'an Star models. The headlight relay is usually located in the relay box in the engine compartment. To be more specific, after opening the engine hood, there's a small black plastic box in the left front corner or near the battery area, possibly labeled "Fuse Box" or "RELAY BOX". Open it, and you'll find a row of relays inside. The one for the headlights will be marked "HEAD LAMP" or with a bulb icon, sometimes in a noticeable color like blue. When checking, first use a multimeter to test the voltage at the input and output terminals. If there's an issue, just buy a matching relay and replace it. Beginners shouldn't randomly pull it out; it's safer to operate with the power off to avoid electric shock. Don't get too hung up on the exact location—some older models might have it under the dashboard, so checking the owner's manual is more reliable.
