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Car Stereo Unlock Help Needed.

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Car Stereo Unlock Help Needed.

Old 6th Feb 2010, 19:04
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Car Stereo Unlock Help Needed.

Evening PPRuNer's

We have a 1999 Vauxhall Corsa which, as a result of my ill advised electrical tinkering, now has a radio which displays 'SAFE' instead of working. I am too poor (and tight) to give any more cash to Vauxhall and am beseeching PPRuNe for your assistance. Can you help?

Yours in rugby

Grabbers
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Old 6th Feb 2010, 19:09
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Take it to Halfords, the guys there may be able to help you.
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Old 6th Feb 2010, 19:16
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Look in your service manual, or other documentation that came with your car.

Most cars come with a pin code for the radio that you punch in and it will activate.

Although not secure for obvious reasons, many people have the number in the service manual or documentation pack in the glove box...
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Old 6th Feb 2010, 19:17
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had an old volvo which radio was locked as well, called up the local dealer and they just asked me to pop in with the log book. they just looked up the right code on the p.c. and gave it to me ( and the car had never been near them) did not charge me anything.
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Old 6th Feb 2010, 19:21
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I have the same problem. I called the service dept and they couldn't find a code for it. By brother said that you can get it unlocked by one of these car radio shops, but it's the wifes car and I can't be arsed unless she pays.
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Old 6th Feb 2010, 19:27
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One for RyanAir - sorry.
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Old 6th Feb 2010, 19:27
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first off, pop the head unit out.. in many cases past owners have changed head unit or they have been in for repair and someone has written the code on the back of the head unit..

if the card/ number isnt in the document pack.. its a head off to the dealer !
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Old 6th Feb 2010, 20:04
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You can get the unlock code from places on the internet other than your dealer - but still expect to pay (though probably less than the dealer charges).

Search on Vauxhall radio code . . .
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Old 6th Feb 2010, 21:14
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In was opnce advised by a member of the Constabulary that leaving the unit in the deepfreeze for 24 hours caused the pin to reset to 0000; at least, that's what they did with theirs
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Old 6th Feb 2010, 21:19
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Seems like it might be bad news if the display is reading SAFE instead of CODE:-
After 10 failed attempts the radio is inoperative. An expensive replacement procedure must then be carried out by a Vauxhall Dealership
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Old 6th Feb 2010, 21:33
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Nah, varies from mfr to mfr. Mine says safe when it wants the code, then gives you two attempts then blocks you for an hour if you get it wrong then two more goes then off to Audi.

My code is 0849. Can you all remember this for me please? I'm terrible with numbers.
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Old 6th Feb 2010, 23:03
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My code is 0849
Is that Subscriber Trunk Dialing, or does the operator have to plug you in?
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Old 7th Feb 2010, 00:09
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Always worth a glance here: Other In-Car Ents GPS, acoustic carpet, car aerial, sound deadening items at low prices on eBay.co.uk ,typing in Vauxhall radio code.

Did similar with erindoors' Ford, flawless - and about 20 cheaper than main dealer's quote.
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Old 7th Feb 2010, 08:54
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Had the same problem with my Frontera, went to local Opel dealer, got the unlock code in seconds, give the dealer a try.
You may have to wait when putting the unlock code in, I had 4 attempts with codes I found at home, none worked, luckily I had a long journey when I got the code, but could not enter the code till I had been travelling for over 1 hour. after 9 attempts ( 6 hour wait ) the radio will shut down, perminantly if not the correct code.
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Old 7th Feb 2010, 12:37
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In was opnce advised by a member of the Constabulary that leaving the unit in the deepfreeze for 24 hours caused the pin to reset to 0000; at least, that's what they did with theirs
I locked my Ford standard radio about 13 years ago and had heard the same rumour (except the pin bit) so I tried it but because I didn't know the bit about the pin the radio didn't work.
Anyway I pulled the radio fuse and then used it to break/complete the circuit in very quick succession (not sure why I did this but I had tried freezing it so must be a bit mad) anyway it burst into life, and I used this fuse method afterwards every time the battery got disconnected, until i sold the car.
I didn't ever freeze it again though.
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Old 7th Feb 2010, 13:52
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Putting the affected unit in the freezer is an old wives' tale.

The theory is that by bringing the processor to a temperature way below its operating limit you'll somehow "lose" the code data.
If that were the case there would be endless ECU problems with cars that are left parked up outside in the depths of winter!

Anyway, assuming you could somehow cause data to be deleted by this method, why would it only be the security code that would be affected?
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Old 7th Feb 2010, 14:39
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The theory is that by bringing the processor to a temperature way below its operating limit you'll somehow "lose" the code data.
May not in the the processor as flash or EEPROM. Especially in older units like 1999 may stored in battery backed RAM like date settings on a lot of PC motherboards. Batteries don't perform well at low temps and can lose data ie revert to 0000.

Of course to plod it is a company car so not too worried if the life is shortened
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Old 7th Feb 2010, 15:28
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Good point. I still don't think I'd want to try it though.
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Old 7th Feb 2010, 20:49
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How are you gonna fit a Corsa in the freezer?
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