Black plate (25,1)Cadillac STS Owner Manual - 2011OnStar service requires wireless communicationnetworks and the Global Positioning System (GPS)satellite network. Not all OnStar services are availableeverywhere or on all vehicles at all times.OnStar service can’t work unless your vehicle is ina place where OnStar has an agreement with awireless service provider for service in that area, andthe wireless service provider has coverage, networkcapacity, reception, and technology compatible withOnStar's service. Service involving location informationabout your vehicle can’t work unless GPS signals areavailable, unobstructed, and compatible with the OnStarhardware. The vehicle has to have a working electricalsystem and adequate battery power for the OnStarequipment to operate. OnStar service may not work ifthe OnStar equipment isn’t properly installed or youhaven’t maintained it and your vehicle is in goodworking order and in compliance with all governmentregulations. If you try to add, connect, or modify anyequipment or software in your vehicle, OnStar servicemay not work. Other problems OnStar can’t control mayprevent service to you, such as hills, tall buildings,tunnels, weather, electrical system design andarchitecture of your vehicle, damage to important partsof your vehicle in a crash, or wireless phone networkcongestion or jamming.See Radio Frequency Statement on page 8‑20for information regarding Part 15 of the FederalCommunications Commission (FCC) rules andIndustry Canada Standards RSS-210/220/310.OnStar Steering Wheel ControlsThis vehicle may have a Talk/Mute button that can beused to interact with OnStar Hands-Free calling. SeeAudio Steering Wheel Controls on page 4‑124 for moreinformation.On some vehicles, the mute button can be used to dialnumbers into voice mail systems, or to dial phoneextensions. See the OnStar Owner's Guide for moreinformation.Your ResponsibilityIncrease the volume of the radio if the OnStar advisorcannot be heard.If the light next to the OnStar buttons is red, the systemmay not be functioning properly. Push the Q button andrequest a vehicle diagnostic. If the light appears clear(no light appears), your OnStar subscription hasexpired and all services have been deactivated. Pushthe Q button to confirm that the OnStar equipment isactive.1-25