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Simplex (Kaba) Pushbutton Lock Programming
Change combinations on dormakaba Simplex mechanical pushbutton cipher locks.
Simplex L1000
Simplex 5000
Simplex 900
Simplex EE1000
Simplex 2015
About Simplex Pushbutton Locks
dormakaba Simplex mechanical pushbutton locks are trusted keyless cipher locks used in commercial, institutional, and residential settings. They require no batteries, electronics, or wiring — operating purely on mechanical combination. One shared access code controls entry, and the combination is changed by accessing the internal combination chamber.
| Compatible Models | 1000, L1000, 5000, 900, EE1000, 2015, 3000, 6200, 7100, 8100 |
| Buttons | 5 numbered pushbuttons (1-5) |
| Code Type | Single access code — sequence of 1-5 buttons, buttons can be pressed simultaneously |
| Factory Default Code | 2 & 4 together, then 3 |
| Power | None (fully mechanical) |
Change the Combination — Simplex 1000/L1000/5000 Series
The 1000 and 5000 Series use the same combination chamber as the 900 Series. The combination can be changed with the lock installed on the door.
⚠️ IMPORTANT: Keep the door OPEN during the entire code change process
Steps to Change the Combination
- On models with Passage feature, make sure passage is disengaged.
- Turn the knob/lever/thumbturn in the CLEAR direction (direction that does NOT unlock). This clears any prior button presses.
- Enter the existing combination by pressing the correct buttons in sequence.
- Turn the knob/lever/thumbturn to the UNLOCK position and hold it there.
- On the interior side, locate the combination change plug (requires a DF-59 key or, on some models, a small setscrew or lockout slide).
- Use the DF-59 key or screwdriver to depress the lockout slide — this sets the chamber to neutral.
- Release the knob/lever to the CLEAR position.
- Carefully press the buttons for your new combination. Write it down first for reference.
- Turn the knob/lever/thumbturn fully to the UNLOCK position. The new combination is now set.
- Re-secure the combination change plug with the DF-59 key — do not over-tighten.
- Test the new combination several times with the door open before closing it.
Combination Rules
- Each button (1-5) can only appear once in a combination.
- Two or more buttons can be pressed at the same time as a single "step" (e.g., press 2 and 4 together).
- A combination can be as short as one button or use all five buttons.
- For better security, include at least one set of buttons pressed simultaneously.
- The factory default on all Simplex locks is: 2 & 4 (together), then 3.
Simplex 900 Series
The 900 Series has pushbuttons arranged in a circular pattern with Roman numerals (I-V). The combination chamber and code change procedure are essentially the same as the 1000/5000 Series, with the lockout slide located under the dust cover of the combination chamber.
If You Don't Know the Existing Code
⚠️ Professional Service Required
If you do not know the existing combination, the lock cannot be reprogrammed without removing it from the door and manually resetting the combination chamber. This process requires locksmith tools and expertise. Do not attempt to force the lock.
Before calling a locksmith, always try the factory default: press 2 and 4 simultaneously, then press 3. Many locks are never changed from the factory code.
Troubleshooting
- Combination doesn't work: Always CLEAR the lock first (turn knob/lever in the clear direction) before entering your combination.
- Buttons feel sticky: Clean with silicone spray. Do not use WD-40 or oil-based lubricants.
- Lock difficult to turn: Check door alignment and latch/strike plate positioning. The lock may need lubrication with dry graphite.
- Passage mode won't engage: Enter your combination first, then engage the passage feature. The lock must be in the unlocked state.
Manufacturer Documents
📄 Official dormakaba Simplex Support & Manuals
Frequently Asked Questions
What is the factory default combination on a Simplex 1000?
The factory default combination is: press buttons 2 and 4 simultaneously, then press button 3. In shorthand: 2&4 together, then 3. Many Simplex locks are never changed from this default.
What is the DF-59 key used for on Simplex locks?
The DF-59 (also called the control key or change key) is a special tool used to put the Simplex lock into combination change mode. You insert it into the back of the lock, turn it, enter the new code, and then remove it. It does not open the lock — it only enables code changes.
Do Simplex locks require batteries?
No. Standard Simplex mechanical pushbutton locks (1000, L1000, 5000, 900, 3000 series) are entirely mechanical and never need batteries. Only the Simplex EE1000 electronic model requires batteries.
Can I press the same button twice in a Simplex combination?
No. Each button (1-5) can only be used once in a combination. However, you can press multiple buttons simultaneously as one step. For example, pressing 2 and 4 together counts as one step, and each button is only used once.
Need More Help?
If these instructions didn't solve your issue, contact the manufacturer directly or call your local locksmith:
Can't reach the manufacturer? Our licensed locksmiths service all Simplex models throughout Brevard County.