# Logitech MX Mechanical, french Swiss mapping (Qwertz), $ is not corretly mapped

**URL:** <https://community.folivora.ai/t/logitech-mx-mechanical-french-swiss-mapping-qwertz-is-not-corretly-mapped/47812>\
**Category:** Bugs or Unexpected Behavior\
**Created:** [September 17, 2026, 3:21pm UTC](https://community.folivora.ai/t/logitech-mx-mechanical-french-swiss-mapping-qwertz-is-not-corretly-mapped/47812 "2026-09-17T15:21:28Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![idefx](https://community.folivora.ai/user_avatar/community.folivora.ai/idefx/32/29383_2.png) [@idefx](https://community.folivora.ai/u/idefx)\
**Post date:** [September 17, 2026, 3:21pm UTC](https://community.folivora.ai/t/logitech-mx-mechanical-french-swiss-mapping-qwertz-is-not-corretly-mapped/47812/1 "2026-09-17T15:21:28Z")

</div>

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**Describe the bug**  
When the "Logitech Keyboard Configuration" is enabled for my Logitech MX Mechanical (Swiss French / QWERTZ ISO layout), the `$` key no longer types `$`. BTT captures it as a Logitech special key named **"logi backslash"** instead of passing it through to macOS.

On ISO keyboards this is the key next to Return, which is reported as the standard HID key "Keyboard \ and |" / "Non-US #". With the "Swiss French" input source, macOS normally turns it into `$` (and `£` with Shift). BTT seems to treat it as a Logitech-specific key and consumes it, even when no action is assigned to it.

**What I already checked**

- Keyboard is in macOS mode (Fn+O); input source is Swiss French; keyboard type is ISO.
- No key remapping in Logi Options+.
- No BTT trigger is assigned to this key.

**Affected input device:**  
Logitech MX Mechanical (Swiss French ISO layout), connected via Bluetooth

**Device information:**

- Type of Mac: e.g. MacBook Pro 14" M3 Pro
- macOS version: Golden Gate
- BetterTouchTool version: 6.824

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**Affected input device (e.g. MacBook Trackpad, Magic Mouse/Trackpad, Touch Bar, etc.):**

Logitech keyboard