The primary electrical panel in this vehicle is located beneath the dashboard on the driver’s side. To access it, simply remove the cover secured by clips or screws. Inside, you’ll find the relays that control key functions like the ignition, fuel system, and interior lights. Before performing any work, it’s recommended to disconnect the battery to avoid electrical shocks or accidental short circuits.
Additionally, there’s another relay panel under the hood, usually near the battery or air filter housing. This one controls high-current components such as the radiator fan and headlights. Lift the hood, locate the relay unit, and remove the cover carefully. Inspect for corrosion, loose wires, or any signs of wear that could cause system failures.
Once you’ve identified both relay units, use the schematic provided on the inside of the covers to match the relays with their corresponding functions. If the schematic is unclear or missing, refer to the vehicle’s manual for further details. Regular maintenance and checks of these relays can help prevent common electrical issues and keep the vehicle running smoothly.
2017 Ford Explorer Electrical System Layout
To begin troubleshooting electrical issues, locate the primary relay unit on the driver’s side under the dashboard. It is secured with clips or screws, which can be easily removed. This area controls the ignition, fuel system, and various interior features. When working on this unit, always disconnect the vehicle’s battery to avoid electric shocks or accidental shorts.
The secondary relay unit is located under the hood, typically near the engine’s air filter or the battery. This unit handles high-current components like the headlights, radiator fan, and power steering. Open the hood and look for a rectangular relay unit. Remove the cover and inspect for any corrosion or worn-out connections that could cause a malfunction in major systems.
Understanding Relay Layout
Both relays have a layout printed inside the cover, identifying each system they control. It’s important to carefully check the labels to match the correct relays with their functions. For example, a blown relay for the fuel system might prevent the engine from starting, while one for the headlights will cause the lights to fail. If the printed layout is missing, refer to the vehicle’s manual for the correct mapping.
Common Issues and Troubleshooting Tips
Electrical issues can arise if a relay is damaged or worn out. Common problems include blown circuits for lights, windows, or ignition. If you notice any malfunctioning components, check the relays in both the interior and engine relay panels. A blown relay is often indicated by a burnt smell, discoloration, or visible damage to the relay housing. Replacing a damaged relay with the correct part number is crucial to restoring functionality.
- Headlights not working: Check the relay controlling the headlight circuit under the hood.
- Engine not starting: Inspect the ignition relay in the driver’s side panel.
- Power windows malfunctioning: Verify the relay for power windows inside the vehicle.
Once the faulty relay is identified, replace it with a new, compatible one. Always ensure that the replacement relay matches the specifications outlined in the manual. Regular checks of both relay panels can help prevent electrical failures and extend the vehicle’s lifespan.
How to Locate the Fuse Box in a 2017 Ford Explorer
The main electrical relay panel in this vehicle is located on the driver’s side beneath the dashboard. To access it, open the driver’s side door and kneel next to the seat. Look just above the pedals for a rectangular cover. Use a screwdriver or your hands to remove the cover, revealing the relays and their functions.
In addition to the interior unit, there is another critical relay panel located under the hood. It’s typically found near the battery or the engine’s air intake system. Lift the hood and locate the rectangular relay unit near the front of the engine bay. This unit controls high-current components such as the headlights and radiator fan.
Once both panels are located, it’s important to understand the layout of the relays and the systems they control. The interior panel handles low-current components like the ignition and interior lighting, while the exterior unit deals with high-power systems. Always refer to the printed layout on the inside of the relay covers to ensure you are checking the right components.
If you’re unsure about the layout or have lost the printed diagram, you can refer to the vehicle’s manual. The manual provides detailed information on which relay corresponds to which system. This will help prevent any confusion or mistakes when inspecting or replacing components.
- Interior unit: Controls circuits for ignition, lighting, and the HVAC system.
- Under-hood unit: Manages high-power components such as headlights and cooling fan.
When performing maintenance or troubleshooting, always disconnect the battery before removing or replacing any components. This will prevent any electrical shocks or short circuits while you work. Regular checks of these relay units will help maintain the vehicle’s electrical integrity and prevent system failures.