These instructions apply to the MG MG3 Mk1 (SZP1) 2011-2023. For other models, please choose your vehicle here.
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After adjusting pressures or changing a wheel on your MG3 (2011–2023), you reset the tyre-pressure monitor so it relearns the correct baseline. It’s done with a dashboard button — no tool needed.
Set the Pressures First
Inflate all four tyres cold to the door-pillar / fuel-flap label figures, then reset — the system takes whatever is in the tyres at reset time as ‘correct’.
Resetting the System
- Stop the vehicle and apply the parking brake.
- Turn the ignition from position 0 to position 2 (on, engine not started).
- Press the TPMS button repeatedly until ‘TPMS malfunction’ appears on the display.
- Press and hold the button until ‘TPMS RESET’ shows with a tick.
If ‘TPMS RESET’ appears with an x, the reset didn’t take — recheck pressures and try again.
If the Light Stays On
- Recheck every tyre — one low corner triggers it.
- Always reset after inflating or a wheel swap so the baseline matches.
- A genuine slow puncture keeps the warning on — inspect before resetting.
Frequently Asked Questions
How do I reset the tyre pressure light on an MG3?
Park, handbrake on, ignition to position 2, press the TPMS button until ‘TPMS malfunction’ shows, then hold it until ‘TPMS RESET’ with a tick.
Is a tool needed?
No — the MG3 relearns through the dashboard button.
Why did it light up in cold weather?
Cold air lowers pressure; top up to the label figure and reset.
It showed ‘TPMS RESET’ with an x — what now?
The reset failed — recheck all pressures are correct and repeat the routine.
Got a TPMS fault code rather than a low-pressure warning? Look it up on autodtcs.com. Changing the battery too? See our MG3 battery guide.
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.
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