Turning the trunk lock counter-clockwise so the slot is horizontal when the key is removed will disable the cabin release lever. You can only do this with the master key. If you have the valet key you will not be able to open the trunk if the lock has been turned counter-clockwise.
A new key can be made/ordered if you have the lock code, which is underneath the passenger side door panel on the lock cylinder.
If your key refuses to open the trunk:
- Try pressing the key to the right side of the keyslot when it's in the horizontal completely locked position and then turn the key clockwise.
- Try the cabin trunk release lever on the drivers side floor door sill, next to the fuel cap release.
- Try sitting on the trunk, and then turn the key (MR2OC).
- WD40 may work, but this is not a good long-term solution as oil in locks tends to attract dust and gum up the tumbler mechanism.
- Get a new copy of the existing key. Often a key with fresh sharp edges is enough to do the trick.
- If you're up to it try you could drill a 1/4" hole at the top of the license plate. The hole will be behind and level with the top of the license plate, centered exactly under the lid. The lock latch is above and to the right of the hole. Use a thin screwdriver to open the latch with a clockwise quarter circle motion. (Red20V@MR2OC)
- If all else fails you can drill out the old lock with a 1/4" drill, and then replace with one from a parts car.
