Ford Edge Cooling Fan Relay Location by Model Year

Where the Cooling Fan Relay Is on a Ford Edge

Start at the power distribution box in the engine compartment. Ford also calls it the battery junction box, and it sits next to the battery. On first-generation models, built from 2007 through 2014, this box holds the fan's high-current fuse and any fan relays. That covers the years people most often ask about, including 2008, 2010, 2011 and 2013. The diagram on the inside of the box lid and the fuse chart in the owner's manual show which positions belong to the cooling fan. Cavity numbers and relay assignments can change between years, engines and option packages. Use the label on your own vehicle rather than a position remembered from another Edge.

The second generation began with the 2015 model year, so a 2016 Edge belongs to it. On these models the fan is still fed from the same under-hood box through a high-amperage fuse. Depending on the year and engine, the lid label may list one or more fan relays, or only the fan fuse. If no fan relay is listed, fan speed is being handled electronically, either at the fan assembly or by the powertrain control module. In that case there is no relay to replace, and the diagnosis shifts to the fuse, the wiring, the fan's control electronics and the command signal.

How the Fan Relay Circuit Works

The powertrain control module decides when the fan should run. It bases that decision on inputs such as coolant temperature and air conditioning demand. When cooling is needed, it energizes the relay's coil through a low-current control circuit. The coil closes the relay's heavy contacts, and battery power then flows through the fan fuse to the fan motor. The relay lets a small electronic output switch a large motor current that the control module could not carry directly.

Fans with two speeds may use more than one relay to switch between a reduced-voltage low speed and a full-voltage high speed. Electronically controlled fans vary speed by rapidly pulsing power to the motor instead. In both designs the fan depends on a healthy supply. Corroded battery terminals, a loose ground or a heat-damaged connector cause voltage drop, and voltage drop slows the fan even when the relay is good. Low system voltage from weak charging output has a similar effect, so check the battery and charging system before condemning fan parts.

What Changes the Answer: Generation, Engine and Power System

The biggest dividing line is the generation: 2007 to 2014 versus 2015 and later. Engine choices also changed within each generation, and so did fan hardware and box layouts. Two Edges from the same generation can therefore show different labels. A relay part number that fits one Edge may not appear in another. When buying a replacement, match the number printed on the old relay instead of shopping by model year alone.

Edge models sold in the United States use gasoline engines and a conventional 12-volt starting battery. No high-voltage traction battery or orange high-voltage cabling is involved in the fan circuit. Procedures written for hybrids and electric vehicles, which require high-voltage disabling, do not apply here. The precautions that matter are 12-volt ones: high fan current, hot components and a fan that can start on its own.

Checking the Relay and Fan Yourself

Shut the engine off and remove the key, or move a keyless fob well away from the vehicle. Keep your hands clear of the blades, because a hot engine can trigger the fan without warning. You can pull a relay with the ignition off. Before you unplug the fan connector or reach near the fan, disconnect the negative battery cable.

Begin with the fan fuse. Confirm its fuse rating matches the lid label and inspect it for a break or discoloration. Next, find the fan relay. Swap it with an identical relay that has the same part number and serves a non-critical circuit in the same box, then retest. With the engine warm and the air conditioning on, the fan normally runs on most setups. If a helper can command the fan with a scan tool, listen for the relay click. While the fan should be running, measure voltage at the fan connector. A reading close to system voltage means the fuse and relay are delivering power, which points toward the motor, its ground or its control electronics. Also measure voltage drop on the ground side under load. More than a few tenths of a volt points to a poor connection that needs cleaning or repair.

Some fans run for a short time after shutdown when the engine is hot, and that is normal. A fan that keeps running until the battery goes flat is different. Relay contacts that have welded shut, or a control fault, can cause that kind of parasitic draw. Pull the fan relay or fuse while the fan is running. If it stops, the problem is in the relay or the control side rather than the motor. To confirm the drain, measure parasitic draw with an ammeter in series at the battery after the vehicle's modules have gone to sleep.

Limitations and When to Get Help

Relay positions, fuse ratings and fan control methods vary by year, engine and options. The lid label, the owner's manual and a factory wiring diagram matched to your VIN are the only reliable references for a specific Edge. If your box lists no fan relay, or a known-good relay and fuse don't restore operation, the fault may be in the fan's control electronics, the wiring or the module command. Sorting that out requires a scan tool that can read trouble codes and command the fan. Do not jumper the fan circuit to bypass controls, and never install a fuse with a higher rating than the label specifies.

If the temperature gauge rises while idling or in slow traffic, stop driving. Never open the radiator cap or coolant reservoir while the engine is hot. If the fault is intermittent or the wiring shows heat damage, a technician with electrical diagnostic equipment can isolate it faster than parts swapping.