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Start the truck so you don't run down the battery, turn the headlights on and see if you can't go into the radio's settings and see if you can find something like daytime/nighttime brightness? If that fails you can try doing a battery drain reset by disconnecting the negative terminal on your battery overnight or you could connect both terminals and short the positive terminals together for about thirty minutes and that should drain any residual power that the capacitors are holding as that is what will happen with the overnight method the shorting of the cables will just do it faster and reset all electronic systems in your truck to default. Don't let the cables touch the battery terminals if you try the shorting them together method (especially the positive one). Either method will reset everything so you'll have to reset your stations and any other preferences you may have set in your truck.
Good luck and let us know how it goes?
Sincerely,
Frank
Well, something is on if the battery is dead. Pull the interior light fuse, and the clock fuse, disconnect the negative battery cable and put a 12 volt test light between the battery terminal and the cable...Likely it will light. Then pull fuses one at a time and observe if the light goes out. Keep disconnecting until you get the light to go out. Do not rule out the new alternator, stuff happens.
If you disconnected the battery then the anti-theft system engaged. The radio says locked may be refering to the computer as well. The system must be reset. Check the owners manual if you have it. Otherwise, you may end up having a dealer reset it. Thousands of people do this everyday.
This sounds like a problem with the radio itself, though it may be a wire. I don't believe there is much risk of the problem spreading to other systems in the car. There is one wire to your radio that is always hot so that the memories can be kept. If you would like to troubleshoot, I can send you instructions. This would involve taking the radio out and checking the wire for voltage.
check to make sure your battery is bolted down securely and its possible that when you throw it hard left its moving around and you"ve loosened the battery cables.
Hold down the clock button until it beeps. Use the arrows which scan for stations to adjust up or down (could be a dial on some models). Push the clock button again to get to the minutes, adjust, then push once again to start it.
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