Where is the turn signal relay for Nissan Sunny located?

[HaleyRose]

Nissan Sunny turn signal relay is located in the fuse box in the engine compartment. Definition of relay: 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 of the input quantity (excitation quantity) reaches the specified requirements. Sunny turn signal generally refers to the car fog lights, installed at the front and rear of the car. Used for road illumination and safety warning when driving in rainy and foggy weather. Turn signal relay locations for other vehicles: Nissan Sylphy turn signal does not have a relay, the turn signal is an important indicator light that is turned on when the motor vehicle is turning to alert the vehicles and pedestrians around.

[DeTeagan]

As a car owner with over a decade of driving experience, I just helped my neighbor fix a similar issue with their Sunny last month. The relay is usually hidden in the fuse box below the steering wheel on the left side - you'll need to remove the knee panel trim to access it. Look for a black square component with pins, marked with 'Turn' or a flasher symbol. For models after 2011, it might have been relocated to the engine compartment fuse box, so check your vehicle's production year. Remember to remove the ignition key before working on it. When I repaired an older Sunny model last time, I found many people were looking in the wrong spot because they didn't remove the secondary cover plate - there are actually seven spare relay slots underneath. If you're inexperienced, use your phone's flashlight and record a video while searching carefully. Don't force the plastic clips or they might break.

[OEden]

The mechanic tells you: We see this turn signal issue every day. 99% of the time, the relay is in the fuse box at the lower left corner of the driver's seat. Squat down and look up—it's the easiest way. Use a flathead screwdriver to pry open the cover, and you'll see small black boxes arranged like building blocks inside—those are the relays. Focus on the second one in the third row with a lightning bolt symbol; pulling that one is the quickest fix. However, post-2014 Sunny models have a redesigned layout, so the relay might be in the black box on the right side of the engine bay. A quick tip: Don't rush to replace it. First, give the old relay a few taps—bad contacts can temporarily revive it with a couple of knocks, but it'll only last up to three days before needing replacement. Don't ask how I know.

[LeJayce]

From a mechatronics perspective, this is straightforward: the core function of a relay is to act as a circuit switch. In the Nissan Sunny, it's typically integrated into the IPDM module (the cabin fuse box). Finding it involves three steps: turn off the engine and open the driver's door, bend down to feel for a protruding square below the steering wheel, press the clips on both sides, and lift it open to reveal a small square box smaller than a lighter—that's it. Don't confuse it with the fog light relay (the fog light relay is usually labeled R19). For testing, simply pull it out, buy an identical model at an auto parts store for about 15 bucks, and plug it back in. By the way, here's a statistic: 90% of turn signal failures are caused by relay contact burn-off, while the remaining 10% are due to wiring or bulb issues.