, do it manually with a tire gauge. The proper air pressure is between 33 and 35 psi.
There may be a tire gauge in the glove box. If not, you can buy one pretty cheaply at most gas stations and auto supply shops.
To use the gauge, remove the valve stem cap on a tire. Press the gauge on to the valve stem and read the number. If it’s below 33, add more air at a gas station.
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