Honda Accord 2020 Manual page 541

uuIf a Tyre Goes FlatuChanging a Flat Tyre
Models with deflation warning system
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Deflation Warning System and the Compact Spare Tyre
If you replace a flat tyre with the compact spare tyre, the low tyre pressure/deflation
warning system indicator comes on while you are driving. After driving for a few
kilometres, Check System will appear on the driver information interface and the
indicator will start blinking for a short time and then stay on; however, this is normal
and is no cause for concern.
Initialise the deflation warning system when you replace the tyre with a specified
regular tyre.
2 Deflation Warning System Initialisation P. 354
540