These instructions apply to the Smart Fortwo Mk3 (W453) 2015-2024. For other models, please choose your vehicle here.
Last updated:
If the tyre-pressure warning has come on in your Smart Fortwo (W453, 2015–2024) after you’ve adjusted the pressures or changed a wheel, you reset it from the instrument-cluster menu. Here’s how.
When to Reset
- After checking or adjusting the tyre pressures.
- After changing one or more wheels or tyres.
Resetting the System
- Adjust all four tyres to the correct cold pressures.
- Turn the ignition key to position ‘1’.
- Select ‘Change settings’, then ‘Tyre pressure monitoring’.
- Press the cluster menu button until the service symbol appears, then press and hold the select button.
- The TPMS light flashes; wait about 5 seconds until it illuminates steadily, then turn the key to ‘0’.
If the Warning Stays On
- Recheck every tyre — one below spec keeps the warning on.
- Confirm the menu step — the light should flash then go steady.
- Drive a short distance to let the system settle.
- Still showing with correct pressures? A sensor may have a flat battery — look up the code on autodtcs.com.
Frequently Asked Questions
How do I reset the tyre pressure light on a Smart Fortwo W453?
Set the pressures, ignition to ‘1’, then Change settings > Tyre pressure monitoring and hold the select button until the light goes steady.
Why won’t the warning clear?
Usually a tyre still below spec, or the reset step wasn’t completed in the menu.
Do I need a tool?
No for a normal reset; a tool is only needed if a pressure sensor is replaced.
Does adjusting one tyre need a full reset?
Set all four correctly first, then run the reset so the baseline is right.
If the warning came on with other lights, decode the code on autodtcs.com.
Disclaimer: The information on this page is provided for general guidance only. Always follow your official service manual and safety precautions when working on your vehicle. We are not responsible for errors, omissions, or any damage resulting from the use of this information.
This website is an independent resource and is not affiliated with, endorsed by, or sponsored by Smart. All trademarks and brand names belong to their respective owners.