How to Reset a Service Engine Soon Warning Light on a Nissan Murano

by Jody L. Campbell
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Introduced in late 2002 as a 2003 model, the Nissan Murano has always integrated on-board diagnostics II (OBD II). OBD II has been placed on all passenger vehicles and trucks since 1996. This second phase of on-board diagnostics universalized the codes and equipment necessary to determine the diagnostic trouble codes (DTCs) that would trigger the "Service engine soon" or "Check engine" light (also known as the malfunction indicator light, or MIL) on the instrument panel. Resetting this light is a fairly easy task if you have the right equipment.

Step 1

Open the driver's side door of the Murano and look under the dashboard on the left-hand side of the steering wheel (although certain year models may require looking on the right-hand side of the steering wheel).

Step 2

Locate the trapezoidal-shaped data link connector (DLC). The connector's shape will match the female plug of the OBD II scanner.

Step 3

Plug the scanner into the DLC. Because it's trapezoidal-shaped, you can only insert the plug one way. The battery in the Murano will provide power to most all OBD II scanners, but refer to the manual for a "Power" or "On" button.

Step 4

Turn the ignition key to the Murano two clicks forward to the accessory power position. This position empowers all the options on the Murano without the engine running.

Step 5

Follow the onscreen menu of the scanner or simply press the "Erase" button (if equipped). Most scanners feature scroll buttons (one or more) to move the cursor on the onscreen menu for different diagnostic features. Some scanners feature an erase button that simply needs to be pressed. You may be asked by some scanners if you're sure you want to erase the codes. Enter "Yes" for this feature. It will take a few seconds for the scanner to send the information to the computer, and a "Command sent" message may appear onscreen or you'll default back to the main menu.

Step 6

Unplug the scanner from the DLC.

Step 7

Start the engine of the Murano to ensure the "Service engine soon" light is out.

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