Theft-Deterrent FeatureTHEFTLOCK® is designed to discourage theft of yourradio. Your vehicle has a “built in” theft-deterrent featureon each radio that is automatic – there is noprogramming required. The radio in your vehicle cannotbe used in any other vehicle. When the radio wasoriginally installed in your vehicle at the factory, it storedthe Vehicle Identification Number (VIN). Each timethe ignition is turned on, the VIN is verified. If thevehicle’s VIN does not match the VIN stored in theradio, THEFTLOCK® will be activated and the audiosystem will not play. If the radio is removed from yourvehicle, the original VIN in the radio can be used to tracethe radio back to your vehicle.Audio Steering Wheel ControlsSome audio controls can be adjusted at the steeringwheel. They include the following:> (Mute): Press this button to silence the system.Press this button again to hear the sound.SRCE (Source): Press this button to choose FM1,FM2, AM, or XM1 or XM2 (48 contiguous US states,if equipped), radio, or CD.3-124