Troubleshooting Your LG MEZ64589015 Dishwasher With Smart Diagnosis And Replacement Parts

Are you having problems with your LG Dishwasher (MEZ64589015)?

The actual model for this LG Dishwasher is LDS5040ST and it has been discontinued by the manufacturer, however I can help you find replacement parts or try to get it working again using the Smart Diagnosis troubleshooting tool.

The part number MEZ64589015 is actually relative to the Inverter Direct Drive Motor which is supposed to be covered by a 10 year limited warranty.

Table of Contents

MEZ64589015 (LDS5040ST) Manual

Click here to download the MEZ64589015 manual.

This will help you find answers to common faults you may be experiencing with your LG LDS5040ST dishwasher.

Full List of Replacement Parts For LG LDS5040ST

  • Main Control Board
  • Door Latch AP5652534
  • Top Spray Arm
  • Washer Pump Motor
  • Cam-Diverter Motor Assembly
  • Noise Filter Assembly
  • Door Hinge Cable-Connector
  • Pump Mesh Filter
  • Drain Hose Assembly
  • Water Inlet Valve
  • Vent Fan/Blower Motor
  • Sump/Pump-Motor Assembly
  • Pump Housing Seal-Gasket
  • Detergent Dispenser Assembly
  • Water Inlet Guide Assembly
  • Lower Dishrack Wheel

You can buy all these spare and replacement parts over at

MEZ64589015 WiFi (LDS5040ST)

This LG dishwasher model doesn’t have a WiFi function.

It can however transmit data to your Smartphone if you need to use the Smart Diagnosis feature to troubleshoot a fault.

In order to use this feature you need to download and use the LG Smart Laundry & DW Application.

One important point to note is that the SD feature will only connect to your phone if the dishwasher is powered on.

Things To Troubleshoot Before Calling Customer Service

These are some of the codes you may see on the display and what they mean.

  • IE
  • OE
  • FE
  • HE
  • tE
  • CL
  • PF

IE error means that there is a water inlet issue. Check the water supply and the inlet hose to make sure it isn’t clogged, kinked, frozen or broken.

An OE error means that there is a drainage problem. Check the outlet hose to make sure it isn’t clogged, kinked or frozen.

A FE error means excessive water supplied, a HE error means that the heater circuit has failed and a tE error means that the Thermistor has failed or that the inlet water is over 194 degrees Fahrenheit.

A FE, HE or tE error requires a call to LG customer services or an authorised service center.

A CL code on the display is not an error. It means that the Child Lock is activated.

This is a feature that stops the controls being pressed during an operating cycle.

It doesn’t stop the dishwasher from being turned off or the door opened.

If you want to deactivate or activate the child lock press the Upper Only and Quick buttons together for 3 seconds.

You may also see PF on the display at some stage. This indicates a power fail and is not an error.

You’ll only see this when the machine loses power during a cycle.

When power is restored, the PF will disappear after 10 seconds when any button is pressed.

For help with other appliances, reviews, tips & advice, visit

MEZ64589015 (LDS5040ST) Smart Diagnosis

As long as your able to power your dishwasher on, you can take advantage of the Smart Diagnosis System.

If the appliance won’t power on, unfortunately you can’t connect to your smart phone.

To get started download the LG Smart Laundry & DW application to your smart phone. If may actually be called the LG ThinQ now in whatever app store you use.

The Smart Diagnosis is a useful troubleshooting feature for assisting you to find faults or other issues that are preventing your dishwasher from working properly.

Although, LG doesn’t guarantee that it will accurately determine the issue.

You should always troubleshoot using the traditional method of service calls in the first instance.

Using Your Phone

Assuming you’ve already downloaded the app, open it on your smart phone.

Step 1: Press the Smart Diagnosis button.

Step 2: Press the Diagnoses button.

Step 3: Press the Dishwasher button.

Step 4: Press the Record button on your phone. Hold the microphone of your phone against the speaker on the control panel of the dishwasher near the power button. (Make sure not to touch the appliance with your phone. Hold about 1 inch away.)

Step 5: Press the Option button on the machine and hold for 3 seconds. The display will show 17 and then start counting down.

Step 6: While holding the phone in place, press the Smart Diagnosis button.

Step 7: Hold the phone in position until the transmission tone has finished.

Step 8: When the app had finished recording the tone, you can see the diagnosis by pressing the Next button.

Through the Call Center

Step 1: Contact the LG call center. If you’re in the US call 1-800-243-0000. If you’re in Canada call 1-888-542-2623.

Step 2: When the agent instructs you, hold the microphone of your phone to the control panel on the dishwasher.

Step 3: Press the Option button on the display and hold for 3 seconds.

Step 4: Hold your phone in place until the transmission tone finishes. This takes around 17 seconds.

Step 5: Once the tones are finished, continue your call with the agent who will advise how to proceed using the diagnosis information.

To see the full instructions download the manual here.

New Version of The LG LDS5040ST Dishwasher

If your appliance is beyond repair, there is a newer version of this dishwasher.

Click here to checkout the new LG LDP6797ST with SenseClean Wash System.

Maire Shield

Maire Shield worked for 15 years as an interior design consultant in Albuquerque and is now retired after selling her business. She now shares her experience and knowledge through blogging to help other people create a beautiful home for themselves.

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