Relays in your 2004 Dodge Durango help regulate high current devices, such as the air conditioning or fuel system. If a device or system malfunctions or stops working, you may have a loose or damaged associated relay. It's an easy task to replace these bad relays.
Confirm the type of relay you need to replace in your Dodge Durango. Find the location of the relay associated to your malfunctioning device by referring to the diagrams/relay keys under the latching covers of the two power distribution centers. These centers are located on the left side of the engine compartment and on the inside snap-in cover of the left driver's side, kick panel surrounding the fuse block.
Disconnect the battery. If you don't disconnect the battery, you run the risk of an accidental electrical surge that could hurt you or cause costly damage to your vehicle.
Access the necessary fuse/relay compartment and unplug your relay. Check the relay and area for dirt, corrosion or damage. Clean, fix or repair any area, as needed.
Plug your new replacement relay into the relay socket. Confirm that the relay fits securely as current running through a loose relay can cause the relay to overheat or the outer casing to melt.
Cover the fuse/relay compartment and reconnect your battery. Test your associated device to see if the new relay corrected the malfunction.