Low tire pressure dash light

[MTD11]

Every time I start my Jeep up, the low tire pressure light comes on and the overhead beeps, showing "Low Spare Pressure." How can I resolve this and get the light to turn off? Putting air in did not resolve the problem...

 

[VTNomad]

Pressure

You may have to retrain your sensors. If you don't have the magnet, you'll have to take it to the dealership.

 

[hyde]

Check the spare pressure manually, what does it read? Retraining will also help.