Toyota Urban Cruiser Owner's Manual page 212

2-3. Operating the lights and wipers
Rear fog light switch
 Fog lights can be used when
Vehicles with a front and rear fog light
Front fog lights: The headlights or front position lights are turned on.
Rear fog lights: The front fog lights are turned on.
Vehicles with a rear fog light only
The headlights or front position lights are turned on.
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URBAN CRUISER_OM_OM52C63E_(EE)
Off
Rear fog light on