Where is the relay box located in the BMW 5 Series?
3 Answers
The relay box of the BMW 5 Series is located inside the glove compartment on the passenger side. The BMW 5 Series is a mid-size sedan under the BMW brand, with exterior dimensions of 5106mm in length, 1868mm in width, and 1500mm in height, and a wheelbase of 3105mm. The BMW 5 Series is available in colors such as Sparkling Crystal Grey, Space Grey, Platinum Bronze, Titanium Silver, Deep Sea Blue, Sapphire Black, and Alpine White. The BMW 5 Series is equipped with a 2.0L B48B20C turbocharged engine, featuring a double-wishbone independent front suspension, multi-link independent rear suspension, electric power steering, tire pressure display, rearview camera, and a 12.3-inch LCD instrument panel.
I've been driving a BMW 5 Series for several years. The relay box is usually located in the engine compartment, specifically on the right side of the engine near the battery, covered by a black plastic lid that might be labeled "Relay Box." I've encountered similar issues myself, like when the fan suddenly stopped working—I just opened that lid to check the relays inside. Finding it isn't too difficult, but be careful not to operate it while the engine is running to avoid electric shock or short circuits. I recommend checking the diagrams in the owner's manual beforehand; they clearly mark the location. The position is stable, but there might be slight variations across different model years. Knowing its location can save a lot of trouble. For instance, when my headlights stopped working last time, it turned out to be a burnt relay, and I fixed it right there, saving a trip to the repair shop. Regularly inspecting the connections to prevent rust is also important.
As an automotive technology enthusiast, I've noticed that the relay box in the BMW 5 Series is typically mounted at the front of the engine bay, such as near the front bumper or on the inner side of the firewall. Opening the box reveals multiple small relays, each responsible for different functions like air conditioning, headlights, or fan control. Locating it is straightforward: first turn off the engine, then check the right side of the engine bay where there's usually a plastic box with clips. Relay issues often cause electrical malfunctions, making timely troubleshooting crucial. I recommend using a multimeter to test the current and ensure proper voltage. It's worth noting that relays can age quickly, so corrosion prevention is essential in humid environments. The exact position may vary slightly by model, but online forums provide reference photos. For safety, consult a repair shop if you're unsure.
