Jeep Grand Cherokee SRT 2018 Owner's Manual page 266

Units
After pressing the "Units" button on the touch-
screen, the following settings will be available:
Setting Name
Units
NOTE:
The "Custom" option allows you to set the "Speed" (MPH, or km/h), "Distance" (mi, or km), "Fuel Consumption" [MPG (US), MPG (UK), L/100 km,
or km/L], "Pressure" (psi, kPa, or bar), "Temperature" (°C, or °F), "Power" [HP (US), HP (UK), or kW], and "Torque" (lb-ft, or Nm) units of measure
independently.
Voice
After pressing the "Voice" button on the touch-
screen, the following settings will be available:
Setting Name
Voice Response Length
Show Command List
US
Brief
Always
Selectable Options
Metric
Selectable Options
Detailed
With Help
Custom
Never
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