'88 W126: Not just another 'whats my code' post... seriously - Mercedes-Benz Forum
 
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post #1 of 4 (permalink) Old 11-24-2012, 03:56 PM Thread Starter
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Vehicle: 1988 420SEL
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'88 W126: Not just another 'whats my code' post... seriously

Ha, okay... I have a 1988 420SEL that has the original Becker Grand Prix radio installed. There are dashes across the display.

SO, I know that this year did not have codes, but rather had to be taken to the dealer to be reset.

Now, 24 years on, with so many of these on the used market and the explosion of the internet since these were made... WHY isnt there ANYTHING online about how the dealer resets the radio?

I cant imagine that this is still some closely guarded secret. There has to be a way to pop out the unit and go in and reset it.

For all of my searching here, Google, etc. I cant find anything but other people asking what to do about their radios.


Even worse, I called the 2 MBZ dealers within over 100miles (Portland & Wilsonville, OR) and no one in the service department knows anything about it. Some I talked to were confused that it didnt have a code.
Short of 'bringing it by' spending all day and more money that it would cost to install a new deck... no one there had any answers.


Does anyone have any leads?

Also, did the '88 W126 have a different tool than later models? I bought a 'mercedes stereo removal tool' and it wouldnt get the deck out. Maybe I was doing it wrong. Thoughts?


THANKS!!
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post #2 of 4 (permalink) Old 11-25-2012, 07:47 AM
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Quote:
Originally Posted by shibbershabber View Post
Now, 24 years on, with so many of these on the used market and the explosion of the internet since these were made... WHY isnt there ANYTHING online about how the dealer resets the radio?

I cant imagine that this is still some closely guarded secret. There has to be a way to pop out the unit and go in and reset it.
The "Why" is simple - it is an anti-theft measure, and the availability of used radios does not mean that they are not targets for theft. Those folks who still have them in their cars probably appreciate the anti-theft feature not being betrayed.

You might contact Becker Autosound to see if they can send a bulletin to a dealer that can service your radio.

I don't have any information on the extraction tools.

Warren

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Formerly:
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post #3 of 4 (permalink) Old 04-25-2019, 06:54 AM
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Did you find a solution to your problem? I'm having the same problem with my 1986 420. I have taken my car to a dealership 15 miles from home.They're the only ones around who have and can do around here. All of a sudden I called yesterday and they have no idea what I'm talking about. They want to charge me $290 to give me a diagnosis. I'm in shock that they have no idea what I'm talking about. I'm sure I am not the only w126 owner that has disconnected the battery and needs a radio code. What can I do?
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post #4 of 4 (permalink) Old 04-25-2019, 11:02 AM
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Typically the dealer will provide a radio code free, if you cannot find the slip that came with your car - but only IF the radio is original to the car, and IF you can prove ownership. The code can be determined from the VIN and the radio serial number. That does not require any troubleshooting. You enter the code once you have it. The dealer is not required to do so.

There are threads in this forum that talk about overcoming problems entering a valid code; most often, folks who have problems with a valid code do not use the proper steps. Those steps are in the owners manual set for your car (I hope you still have it). But if not, search this forum.

Dealer service (or servicing by the manufacturer of the radio (probably Becker in your case) is required if the radio keeps rejecting a valid code.

And of course, this was largely explained in our stickies the blue-backgrounded area at the top of the first forum page, in the entry titled "Legitimate sources of radio codes."

Warren

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Formerly:
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2005 S500 4-Matic
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