On the 2022 Trek Rail 9, the integrated battery lock is an
ABUS Plus cylinder — specifically the
ABUS Plus 8000 system that Trek (and Bosch, via the PowerTube interface) use across the Rail range. Each lock has a unique
key code stamped on the key itself (and on a small card that should have come with the bike).
A few practical points the community has hammered out:
•
Photograph the key code and back it up somewhere safe. As
@irie has pointed out repeatedly, if you lose the key you can order a replacement through an authorised dealer with the code and proof of ownership — they contact ABUS to cut a new one. Without the code it's a much bigger job.
• If your lock
rattles on rough ground (a known Rail trait, though more associated with Gen 5), swapping the cylinder doesn't always cure it — the internal mechanism is identical. Some riders just delete the lock entirely and bolt the battery in, only refitting it for dealer diagnostics.
• Replacement cylinders are available directly from ABUS and via Trek dealers. If you want to match an existing key (e.g. to key-alike a frame lock or chain lock), quote the Plus code when ordering.
The keys themselves are the reversible dimple-style ABUS Plus blanks — quite distinctive, hard to copy at a normal key cutter, which is rather the point.
Anything else you want to dig into — rattle fix, key replacement process, or deleting the lock?