I recently ran into a problem with my Factory stereo. It's a Ford stereo model # DZU7A. The battery recently died and after installing a new one I no longer have satellite radio. I contacted Sirius and they said the signal is going out the bill is paid and the problem lies on the stereo's end. They said to take it to the dealer and they will need to do a "Hard Reset". I contacted 3 dealers and they all laughed and said they have no idea what I am talking about. They said I couldn't get in the shop for a week so I removed the unit in search of the typical reset button on electronics. I couldn't find one. Has anyone ever heard of this? is it possible to reset these head units? any suggestions?

 

no most units are plug and play take a look at this maybe this will help.

Sirius radio not working. Service paid to date. Reset/activations - JustAnswer

 

Thanks for the response. I removed the head unit and satellite receiver this weekend and reconnected, still nothing. Also disconnected battery terminal for a few hours. Would this reset like removing a fuse and waiting. Do fuse boxes have a backup because the radios am/fm presets never delete like most radios when the battery dies?

 

hum that link didn't work I'll copy and paste it here.


20449 2007-2008 VARIOUS VEHICLES - SATELLITE DIGITAL AUDIO RECEIVER SYSTEM (SDARS) LOW VOLUME AND/OR DTC U0196 AND/OR DVD WILL NOT PLAY OR EJECT THE DISC.
SOME 2007-2008 VEHICLES EQUIPPED WITH REAR DIGITAL VIDEO DISC (DVD)/REAR ENTERTAINMENT MODULE (RETM), MAY EXHIBIT LOW VOLUME WHILE USING THE SATELLITE DIGITAL AUDIO RECEIVER SYSTEM (SDARS) AND/OR AUDIO CONTROL MODULE(ACM) DTC U0196, AND/OR RETM/DVD WILL NOT PLAY OR EJECT THE DISC. IF YOU ENCOUNTER THIS CONCERN, FIRST REMOVE AND REINSTALL THE F3 FUSE FROM THE SMART JUNCTION BOX (SJB) ON EXPEDITION, NAVIGATOR, EXPLORER, MOUNTAINEER, EDGE, MKX, TAURUS X, TAURUS, SABLE, F-SERIES SUPERDUTY / F4 FUSE FROM THE CENTRAL JUNCTION BOX (CJB) ON F150 AND MARK LT / F11 FUSE FROM THE SJB ON FIVE HUNDRED, MONTEGO AND RETEST. IF THE SYSTEM OPERATES NORMALLY, NO FURTHER SERVICE IS REQUIRED. IF THE CONCERN IS NOT REPAIRED USE THE WORK SHOP MANUAL, SECTION 415-00 FOR ADDITIONAL DIAGNOSTICS.
EFFECTIVE DATE: 09/17/2008

You will need to remove fuse 4 and then put ti back in. This usually solves the problem. Basically you are rebooting the system.
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Did all this and still nothing! Anyone know what the workshop manual is and where I could get it?

 

Look at your vehicle manual and make certain fuse #4 is the correct one.

 

Checked all fuses pertaining to the radio. All good. Could the satellite downlink processor been fried when I tried to jump the battery? Found this in the passenger kick panel. Any way to tell its bad without replacing?

 

All good now ! Swapped out the "downlink processor" with one from another ford had Sirius activate the new ESN number and works fine !!