Resetting code on Pioneer DEX-77

[sm7xvd]

I recently purchased a car with one of these mounted. Previous owner does not know the code, and it is not factory "0000".
I noticed that particular unit has been discussed here before, but the aswer was to be given in form of a service manual. This manual does not seem to be very widely available, so does anyone here have it?
I got one service manual from another place, but it does not mention anything about resetting the code.

[charger R/T]

here is an old thread down near the bottom may be the answer you ask for.
http://www.turbododge.com/forums/f4/...-77-radio.html
Tim

[sm7xvd]

Yes, that is the thread i was referring to.
However what's mentioned there presumes you know the old code.

[lancer117]

Quote:

Originally Posted by sm7xvd Yes, that is the thread i was referring to. However what's mentioned there presumes you know the old code.

you will not be able to change that code without getting the radio re-chiped .you must have the old code to get into the radio without that you are S.O.l .let me know if you fing anything out . it sucks driving aroud in a car that has a radio , but does not work.

[charger R/T]

according to the thread I linked it says in post 3 the lost code can be easily reset. Later in the thread Ken posts the procedure.
Tim

[lancer117]

Quote:

Originally Posted by charger R/T according to the thread I linked it says in post 3 the lost code can be easily reset. Later in the thread Ken posts the procedure. Tim

its not as easy as it seems , trust me . if it was that easy i would have had my radio working a year ago . i'am not saying its not impossable , but its not that easy . if you find anything out let me know . thanks

[charger R/T]

Quote:

Originally Posted by ShelbyMotorspts A lost code can easily be changed on these radios. No circuitry needs replacing and the radio can still be mounted in the car. Instructions for changing the code are in the Factory Pioneer Service/Repair Manual. Pioneer discontinued these service manuals years ago but I have some reproductions for $20 They are a two manual set. (See pic below) http://www.photobucket.com/albums/06...s/8d2c5ae0.jpg If you're interested in the manuals please email me at: shelbymotorsports@att.net You may also want to check with Ken Adler as I think I sent him the instructions for changing the security code last year. At least I think it was Ken but I could be wrong. Steve

Have you viewed the service manual? Steve posted a few years ago he had copies and it is as easy as pushing buttons to change the code if you don't have the code. I don't have one of these radios so I can't try what is posted. But if I did have one I would at least contact him.
Tim

[lancer117]

yes i have got a copy of this service manual , i got it from pioneer . nothing on there is going to help me out without the code .

[Turbo Joe]

honestly, I would've started with 0001 and work my way up. That is untill I got sick of it and bought a new radio.. have you tried to remove the radio to see if anyone wrote the code on the back of the radio? sometimes those radios get serviced and someone writes the code on it. worth a try..

[lancer117]

Quote:

Originally Posted by Turbo Joe honestly, I would've started with 0001 and work my way up. That is untill I got sick of it and bought a new radio.. have you tried to remove the radio to see if anyone wrote the code on the back of the radio? sometimes those radios get serviced and someone writes the code on it. worth a try..

well if you enter the code wrong three times it will lock up of three hours . after the three hours you can retry it . well i have tried to remove mine and there was nothing on the back .

[sm7xvd]

The service manual i got offers no solution, nothing is written on the unit. I have it connected to a lead acid battery on the workbench.
I've tried some numbers associated with the car, but with no luck. And as lancer117 says it will lock up for three hours after three unsuccessful attempts.

[lancer117]

Quote:

Originally Posted by sm7xvd The service manual i got offers no solution, nothing is written on the unit. I have it connected to a lead acid battery on the workbench. I've tried some numbers associated with the car, but with no luck. And as lancer117 says it will lock up for three hours after three unsuccessful attempts.

good luck , i havent gave up on mine yet . i still want to try to find some way to fix it

[moparman7]

Has anyone here ever had one of these repaired with the code problem? if so what did it cost? for i have one with the same problem in shelby lancer #21 it worked fine but sat with battery unhooked for a few years and the code it had in it does not work any more.:(

[looneytuner]

Hi Ken

Here's how to reprogram the DEX-77 with a new security code.

1) Turn the radio on.
2) Press and hold both volume control buttons at the same time.
3) Within one minute of holding both volume control buttons down you
will see the word "CODE" flash on the radios display. Release the volume
buttons when this happens.
4) Using the oval numbered buttons below the display and enter a four
digit security code.
Numerals 0 to 5 are clearly marked.
Numeral 6 is the "R-Play" button.
Numeral 7 is the "M-Play" button.
Numeral 8 is the "Volume -" button.
Numeral 9 is the "Volume +" button.
5) Once you have entered a four digit number press the "band" button at
the left bottom of the radio.
6) The radios display will go back to normal and you're all set.

Steve


I don't know where I got this or if it works.

[charger R/T]

Quote:

Originally Posted by looneytuner Hi Ken Here's how to reprogram the DEX-77 with a new security code. 1) Turn the radio on. 2) Press and hold both volume control buttons at the same time. 3) Within one minute of holding both volume control buttons down you will see the word "CODE" flash on the radios display. Release the volume buttons when this happens. 4) Using the oval numbered buttons below the display and enter a four digit security code. Numerals 0 to 5 are clearly marked. Numeral 6 is the "R-Play" button. Numeral 7 is the "M-Play" button. Numeral 8 is the "Volume -" button. Numeral 9 is the "Volume +" button. 5) Once you have entered a four digit number press the "band" button at the left bottom of the radio. 6) The radios display will go back to normal and you're all set. Steve I don't know where I got this or if it works.

That came from post 12 of the link I posted in post 2 of this thread. Earlier posters said it doesn't work. I don't know I don't have one of these radios.
Tim