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Audio SystemSatellite Radio Electronic SerialNumber (ESN)You need your ESN to activate, modify ortrack your satellite radio account. When inTroubleshootingsatellite radio mode, you can view thisnumber by pressing SIRIUS and memorypreset 1 at the same time, or tuning tochannel 0.AcquiringRadio displaySat Fault/SIRIUS systemfailureInvalid ChannelUnsubscribed ChannelNo SignalUpdatingCall SIRIUS 1-888-539-7474None found. Check ChannelGuide.Subscription UpdatedConditionRadio requires more thantwo seconds to produceaudio for the selectedchannel.There is an internal moduleor system failure present.The channel is no longeravailable.Your subscription does notinclude this channel.The signal is lost from theSIRIUS satellite or SIRIUStower to your vehicleantenna.Update of channelprogramming in progress.Your satellite service is nolonger available.All the channels in theselected category are eitherskipped or locked.SIRIUS has updated thechannels available for yourvehicle.Possible actionNo action required. Thismessage should disappearshortly.If this message does notclear shortly, or with an ignitionkey cycle, your receivermay have a fault. See anauthorized dealer for service.Tune to another channel orchoose another preset.Contact SIRIUS at 1-888-539-7474 to subscribe tothe channel, or tune toanother channel.The signal is blocked. Whenyou move into an open area,the signal should return.No action required. Theprocess may take up tothree minutes.Contact SIRIUS at 1-888-539-7474 to resolvesubscription issues.Use the channel guide toturn off the Lock or Skipfunction on that station.No action required.320F150 (TF6) , enUSA