My clock periodically resets itself. None of my presets for radio change. Nothing else resets, just the time.

Try using an oil seal conditioner first. It is a polymer that makes the seals soft again.

https://www.google.com/search?q=oil+seal+conditioner

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For help retrieving radio codes contact this link:

What is causing that irritating noise? ' DSMtuners

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try using a code reader to reset the CPU for starters and go from there . If it doesn't help use the code reader to check for faults.

Looks like it's the same thing that happens when I remove the power cord from my home hi-fi system... when I reconnect it it goes crazy on display mode till I reset the clock. In your case, the obvious difference is that it may have lost the clock time and memory presets.. see if retiming the clock and reprograming the tunner presets does the trick.. also check the memory fuse...usually the one on a pink wire.

CLEAN OR REPLACE BATTERY TERMENALS

belt

befor you removed raido did you disable your anti theft if not then you need to have the anti theif reconfiged by a dealer, the reason it works with lights on is that its a over ride so if you raido gets theifted you will still be able to drive the car.

On your radio your preset stations each have a number 1,2,3,4,5,etc. The first preset station represents the first number in your code. Lets say your code is 1212(example) then you would: [press #1 preset-1 time.] [press #2 preset-2 times.] [press #3 preset-2 times.] [press #4 preset-1 time.]
Once you've entered your code press the cd button.
Good Luck.

The 2008 Lancer CVT has a "timing chain"