When the Lexus GX470 maintenance light comes on, it’s time for a reset. Here’s how to do it:
1. Turn off the engine.
2. Open the hood and locate the ECU box. It will be near the windshield on the passenger side.
3. Disconnect the negative battery terminal.
4. Push and hold down the reset button located on the ECU box for at least three seconds.
5. Reconnect the negative battery terminal.
6. Close the hood and turn on your vehicle to see if your Lexus GX470 maintenance light has been reset successfully.
Why do you need to reset Lexus GX470 maintenance light?
The Lexus GX470 maintenance light illuminates when there is a problem with one or more of your vehicles emission control components.
This could be because the system detects a fault and automatically turned on the check engine light, or because it’s malfunctioning and turning itself on randomly. Either way, it’s important to reset the Lexus GX470 maintenance light as soon as possible to avoid any potential damage to your vehicle.
Resetting the light is a simple process that only takes a few minutes, and can be done with just a few basic tools.
What is the use of Lexus GX470 maintenance light?
The Lexus GX470 maintenance light will turn on if your vehicle computer detects a problem with one of the following:
• The amount of air entering your engine isn’t correct.
• There is trouble in the fuel supply system such as clogged fuel injectors or a faulty fuel pump.
• There is a problem with the ignition or spark plugs.
• There is a misfire in one or more cylinders. This could be because of a faulty spark plug, damaged valve, a bad fuel injector, worn piston rings, sticking valves and much more.
• The engine has trouble starting due to an issue with the crankshaft position sensor, the transmission control module, starter motor or battery.
• There is a problem with the exhaust gas recirculation system which will cause your Lexus GX470 maintenance light to turn on.

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