Lishi Tool Not Working? 7 Things to Check
Short version: most "broken" Lishi tools are not broken. They are the wrong keyway, under- or over-tensioned, or working on a worn lock. Work through these seven checks before you order a replacement.
1. Seven checks, in order
| Symptom | Likely cause | What to do |
|---|---|---|
| Pins will not set | Tool not fully seated, or wrong keyway | Remove, re-seat, confirm the code on the lock |
| Cylinder will not turn | Too much tension | Release, use fingertip pressure only |
| Depths inconsistent | Worn lock or damaged cylinder | Decode twice; compare with the original key |
| Key cuts but will not turn | One depth off by a step | Recut the binding position, test again |
| Tool feels loose | Wrong cut count | Check 8-cut vs 10-cut before continuing |
| Tool stuck in lock | Tension applied while removing | Release tension, wiggle straight out |
| Works on one side only | One-direction lock or worn pins | Test both directions; do not force |
2. The wrong-keyway problem
The most common cause is a tool that does not match the lock. HU101 will not read a FO38 keyway, and an 8-cut HU162T will not read the 9-cut door profile.
Confirm the code and cut count before blaming the tool.
3. Tension, again
If the pins feel mushy, you are probably pressing too hard. If the cylinder keeps resetting, too light. Aim for the point where pins click but the cylinder does not bind.
4. Worn locks
On high-mileage vehicles the pins and cylinder are worn. The decoded depths may be correct for the lock but wrong for a new key. Cut, test, and adjust the one position that binds.
5. When it is actually the tool
If the tip is bent, the decoder marks no longer line up, or the pick does not return freely, stop using it. A damaged tool will damage the lock.
6. FAQ
Can I lubricate the tool?
Keep the pick and decoder clean and dry. Lubricant attracts grit and changes the feel of the pins.
How often should a tool be replaced?
When the tip is worn or the decoder no longer reads consistently — not on a fixed schedule.
Why does it work on one car and not another?
Almost always a different keyway or cut count. Check the code.
Related reading
7. Where to start
If the checks point to a wrong tool, compare the keyway in the Lishi collection before ordering a replacement.
Reviewed against current product data on 2 November 2026.
