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A run-flat tyre after experiencing a puncture or loss of air pressure

Mercedes Run Flat Indicator Problems - How To Restart It?

Do you own a Mercedes vehicle equipped with a run flat indicator? Are you unsure of how it works or what to do when it malfunctions?

Don’t worry, we've got you!

In this article, we will delve into the details of the Mercedes run flat indicator, providing you with a comprehensive understanding of its functionality and troubleshooting methods.

What Is The Mercedes Run Flat Indicator?

The Mercedes run flat indicator is designed to notify drivers of possible tyre punctures or reductions in tyre pressure, enabling them to take prompt action (typically repair or replacement of the tyre).

This advanced system is seamlessly integrated into the tyre pressure monitoring system (TPMS) of Mercedes-Benz vehicles.

How Does It Work?

The Mercedes run flat indicator utilises sensors placed within the tyres to continuously monitor the tyre pressure.

When a tyre’s pressure drops below the recommended threshold, the system immediately detects the change and triggers a warning signal on the vehicle’s dashboard.

Resetting The Mercedes Run Flat Indicator

If you have addressed the tyre pressure issue and the run flat indicator is still on, initiate a restart of the Mercedes run flat indicator. Below are the steps to follow:

  1. Start by turning on the ignition and ensuring that your vehicle is in park mode.
  2. Locate the “OK” button on your steering wheel and press it.
  3. Use the arrow buttons to navigate through the menu options and select “Service.” Confirm your selection by pressing “OK.”
  4. Continue scrolling until you find “Tyre Pressure,” then press “OK” to access it.
  5. In the “Tyre Pressure” menu, select the “Restart” button and confirm your choice by pressing “OK.”
  6. A confirmation message will appear on the screen, stating that your tyre pressure has been reset successfully. Select “Yes” and “OK” to proceed.
  7. Finally, a “Run Flat Indicator Restarted” message should appear on the multifunction display, indicating that the restart process was completed.

What Does Run Flat Indicator Inoperative Mean?

When the “Run Flat Indicator Inoperative” message appears on your Mercedes dashboard, it means that the system responsible for monitoring the run-flat tyres is currently not functioning properly.

The exact cause can vary, ranging from a minor sensor malfunction to a more complex issue within the system.

Resolving The Run Flat Indicator Inoperative Issue

Check Tyre Pressure Manually

Use a reliable tyre pressure gauge to measure the pressure on your tyres. Compare the readings with the recommended levels specified in your vehicle’s manual.

Inspect For Visible Damage

Visually examine the tyres for any signs of punctures, cuts, or bulges.If you notice any significant damage, refrain from driving on the affected tyre.

Restart The Vehicle

In some cases, a simple car restart might resolve the malfunction. Turn off the engine, wait for a few minutes, and then restart your vehicle.

Visit An Authorised Service Centre

If the “Run Flat Indicator Inoperative” message is still displayed, it is recommended to schedule an appointment with an authorised Mercedes-Benz service centre. They have the expertise to diagnose the issue accurately and perform any necessary repairs.


By understanding the purpose and functionality of the run flat indicator on your Mercedes, you can take proactive measures to maintain the recommended tyre pressure.

Remember to regularly check your tyres and address any issues promptly to maximise the effectiveness of the run flat indicator.

Stay vigilant, keep your tyres properly inflated, and enjoy a smooth driving experience in your Mercedes!

Louis from Tyre Geek


I'm Louis, an engineer passionate about helping Australians choose better tyres for their vehicles!