This content has nothing to do with the Cardano stake pool, but it’s just a good place to keep it as I found it useful.
To help those out that might be looking for this info, I have typed up the Toyota late 80s, early 90s MkIII Supra car radio master codes from the images below. You need this if your radio is showing “SEC” and you don’t have the security number that was set. This might have happened on a radio you bought second hand (like me). Or you set the code and have now forgotten it.
Instructions below:
- Determine the six-digit master code for the unit (see the table below).
- Turn the ignition to “ACC”. The display should read “HLP or “HELP”. If the display reads “SEC” when the key is turned to “ACC” the unit is only disabled and needs to be “locked up” beofre you can proceed. (See the next page for details on that. As a note, my 2633 unit didn’t show “HELP” but just a blank screen, doing the next step worked and I got into the ready mode)
- Access Mode – Press and hold the 1, 4 and 6 buttons, then simultaneously press and hold the power button until “SEC” appears on the display.
- Ready Mode – Press and hold the “Tune ^” button then simultaneously hold the 1 button until “^ —” appears on the screen.
- Input Mode – Enter the first three digits of the code by pressing 1 repeatedly to get the first digit set, 2, then 3 to set the digits.
- Ready Mode – for the last 3 digits. Press and hold the “v Tune” button with 1 until “v —” appears.
- Input the last 3 digits
- Set Mode – Press and hold SCAN until “SEC” appears in the display for a few moments then goes blank. The unit is now operational.
The info at the top isn’t necessary, but the lock up instructions are useful.
Scan of master code list (replicated in the table below). Find the model number on the front of your unit.
| Model Number | Master Code |
| 2630 | 512810 |
| 2631 | 512810 |
| 2633 | 512810 |
| 2634 | 906743 |
| 2635 | 512810 |
| 2636 | 512810 |
| 2637 | 512810 |
| 2638 | 512810 |
| 2639 | 512810 |
| 11601 | 512810 |
| 11602 | 512810 |
| 11603 | 512810 |
| 11605 | 512810 |
| 11609 | 512810 |
| 11611 | 512810 |
| 11612 | 512810 |
| 11701 | 906743 |
| 11702 | 906743 |
| 11703 | 906743 |
| 11704 | 906743 |
| 11075 | 906743 |
| 11706 | 906743 |
| 11708 | 607410 |
| 11709 | 607410 |
| 11712 | 640702 |
| 16801 | 108431 |
| 16802 | 108431 |
| 16803 | 108431 |
| 16804 | 108431 |
| 16805 | 108431 |
| 16806 | 752722 |
| 16807 | 752722 |
| 6624 | 740850 |
| 6628 | 540471 |
| 6631 | 740850 |
| 6632 | 740850 |
| 51601 | 740850 |
| 51602 | 740850 |
| 51603 | 740850 |
| 51604 | 740850 |
| 51605 | 740850 |
| 51606 | 740850 |
| 51607 | 740850 |
| 51700 | 540471 |
| 51701 | 540471 |
| 51702 | 540471 |
| 51703 | 54787 |
| 51704 | 54787 |
| 51705 | 328448 |
| 51706 | 328448 |
| 56802 | 878410 |
| 56803 | 878410 |
| 56804 | 878410 |
| 56805 | 878410 |
| 56806 | 524608 |
| 56807 | 524608 |
| 56833 | 620341 |
| 1700 | 120167 |
| 6800 | 266614 |