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850 radio won't take code

Please help.My volvo was parked for a long time and the battery died. When I started it again, I entered the code (like I have in the past) but it would not and will not accept the code. Volvo dealership has an exchange program but it costs $350.00 to swap out my old one for thier reconditioned radios and you're not even allowed to uppgrade to a cd player vs tape. Is this a fixable problem. Does it have some kind of a replacable bios battery, or memory chip? thanks

Reply to
Michael J Yebba
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How to Reset the Radio (from

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1) When the radio displays CODE, you may enter the code using the preset radio station buttons 2) For instance, his number is 1615, so when he gets the CODE on the radio's display, he presses the radio preset button 1, then the radio preset button 6, then the radio preset button 1, then the radio preset button 5. 3) If your radio says OFF, leave the ignition on in the first position for 2 1/2 to 3 hours in order for it to display CODE.

The code is keyed to a serial number on the radio. Your dealer can get you the correct code. If the correct code doesn't work, I have heard that if you put the whole unit in a freezer for 24 hours (suitabley protected in a plastic bag), then you may be able to reset using any 4 digits you chose. I have never tried this myself.

Reply to
Stephen Henning

I have an 850 too, 3 thoughts

1) I hope someone else can help you solve this, if not: 2) I have seen the upgrade radio with CD on E-bay for less the 150 3) You can look at
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for a new head end--it will not look as nice, but they do have a insert to perfectly fill the hole and mount the new unit--a few weeks ago they had some great deals on discontinued but new fully warranted blaupunct units.
Reply to
Steve n Holly

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