Where is the compressor relay for Nissan Sylphy located?
4 Answers
Nissan Sylphy's compressor relay is located inside the engine compartment relay box. A relay is an electrical control device that causes a predetermined step change in the controlled quantity in the electrical output circuit when the change in the input quantity (excitation quantity) reaches the specified requirements. The relay has an interactive relationship between the control system (also known as the input circuit) and the controlled system (also known as the output circuit). The Nissan Sylphy has dimensions of 4641mm in length, 1815mm in width, and 1450mm in height, with a wheelbase of 2712mm. It is a 4-door, 5-seater sedan, equipped with a 1.6L L4 naturally aspirated engine.
I remember fixing quite a few Nissan Sylphys. The relay for the air conditioning compressor is usually located in the fuse relay box in the engine compartment. The box has a cover labeled with different component identifiers—look for a small square labeled 'A/C' or 'Compressor,' that's it. Open the hood, the box is near the firewall on the passenger side, and you might need to pry open some clips to check. If the AC isn't cooling well in hot weather, a faulty relay is one of the common causes. After safely turning off the engine, use small pliers to check if the fuse is intact; if not, just replace it. The location varies slightly depending on the Sylphy's model year—older models might have it under the driver's side, but that's rare. It's best to confirm with the user manual diagram. A faulty relay can prevent the compressor from starting, making summer drives uncomfortably stuffy. Regular maintenance checks on this little component can save a lot of hassle.
I previously looked for this relay in my Sylphy, it's located inside the fuse box in the engine compartment. Open the hood and you'll see a small black box attached to the firewall side, packed with various electrical components. Look for the plastic square labeled 'A/C'—that's the compressor's relay. Remember to turn off the engine and engage the handbrake for safety first when working on it yourself. It's really annoying when the AC stops working in hot weather. Just gently pry open the box cover with a flathead screwdriver. If the relay is loose or burnt out, it will keep buzzing. The Sylphy's design is quite user-friendly, with diagrams on the box to help locate components—don't worry if you're a beginner, and if unsure, take a photo and ask an experienced driver. Occasionally, aging wiring or an overloaded fuse can also affect it. Keeping a universal relay on hand for DIY replacement is low-cost and not difficult.
I've dealt with the Sylphy's AC issues many times. The compressor relay is located in the engine compartment fuse relay box, a small box at the rear of the engine labeled with A/C or related markings. Open the hood, unclip the box cover to access it. If the AC fails during hot weather, this might be the culprit. Ensure the vehicle's ignition is off before inspection—no live operations. If the relay doesn't click properly, it needs replacement. The location is generally consistent across different Sylphy model years with few changes, but fuse-related issues are common. Before replacement, confirm there are no short-circuit risks to avoid wasted effort. Keep the box clean and dry to prolong its lifespan.
