If you own a 2015 Highlander, you may have noticed a Maintenance Required light on the dash. This light is a reminder to you that it’s time to bring your vehicle into a qualified service center to have the maintenance and repairs done that are due. Fortunately, resetting the maintenance light on a 2015 Highlander is a relatively easy process that anyone can do.
Tools Needed
Before you can begin the resetting process, you will need to have certain tools on hand. The tools you will need are:
- A Phillips head screwdriver
- A flat head screwdriver
- A socket set
- A digital multi-meter
Step One: Locate the ECM
The first step in resetting the Maintenance light on a 2015 Highlander is to locate the ECM, or Electronic Control Module. This is a small box that is located just below the driver’s side of the dash. You will need to remove the dash panel in order to access the ECM.
Step Two: Disconnect the battery
The next step is to disconnect the battery. This will help to ensure that no electrical current is flowing through the wires while you are working on the ECM. To do this, you will need to locate the negative battery cable and loosen the nut that holds it in place. Once the nut is loose, you can pull the cable away from the battery.
Step Three: Remove the ECM
Once the battery is disconnected, you can begin to remove the ECM. To do this, you will need to remove the screws that hold the ECM in place. Once the screws are removed, you can carefully pull the ECM out from the dash. Be sure to take note of any wires that are connected to the ECM, as you will need to reconnect them once the resetting process is complete.
Step Four: Test the Connections
Once the ECM is removed, you can begin testing the connections. To do this, you will need to use a digital multi-meter. This will help to ensure that all of the connections are working properly. If there are any broken or loose wires, you will need to repair them before continuing.
Step Five: Replace the ECM
Once all of the connections have been tested and any repairs have been made, you can begin to re-install the ECM. To do this, you will need to reconnect all of the wires and then tighten the screws to hold it in place. Once the ECM is installed, you can reconnect the battery.
Step Six: Reset the Maintenance Light
The final step in resetting the Maintenance light on a 2015 Highlander is to reset the light itself. To do this, you will need to locate the OBD-II port and plug in a code reader. Once the code reader is plugged in, you can access the Maintenance light settings and reset the light.
Frequently Asked Questions
What is a Maintenance Required light?
A Maintenance Required light is a dashboard indicator light that signals to you that your vehicle is due for a service or maintenance check-up. It is important to take your vehicle in for a service when the light is on, as failure to do so can lead to further damage to your vehicle.
What tools are needed to reset the Maintenance light?
In order to reset the Maintenance light on a 2015 Highlander, you will need to have a Phillips head screwdriver, a flat head screwdriver, a socket set, and a digital multi-meter. These tools are needed in order to access and test the ECM.
How do I locate the ECM?
The ECM, or Electronic Control Module, is located just below the driver’s side of the dash. You will need to remove the dash panel in order to access the ECM.
Do I need to disconnect the battery before resetting the Maintenance light?
Yes, it is important to disconnect the battery before resetting the Maintenance light. This will help to ensure that no electrical current is flowing through the wires while you are working on the ECM.
What do I need to do after replacing the ECM?
After replacing the ECM, you will need to reconnect the battery and then locate the OBD-II port and plug in a code reader. This will allow you to access the Maintenance light settings and reset the light.
What happens if I don’t reset the Maintenance light?
If you don’t reset the Maintenance light, you may experience further damage to your vehicle. It is important to take your vehicle in for a service when the light is on in order to avoid any potential problems.