Vehicle Functions

Nexus Series Firmware Help › Vehicle Functions › Vehicle FunctionsUpdated Sep 2026

The Vehicle Functions page is the switchboard for the car-level features on a Haltech Nexus. Here's what it's for and what to check on it.

In NSP, the Vehicle Functions page lists the car-level features a Nexus can run, like traction control, cruise control and the pit lane speed limiter. Each one can be enabled or disabled here. Enabling a function adds its settings to the navigation tree, and disabling it hides them, which keeps the tree tidy on a build that only uses a few.

It's also a handy shortcut. Click any function name and NSP takes you straight to that function's settings node.

What to check

  • Anything shown in red. NSP highlights errors in red. Treat any red entry as something to sort out, for example a function that is enabled but missing something it needs, such as an input that hasn't been assigned. Click through and fix it before you drive.
  • Functions you don't use. Switch them off so there's nothing half-configured running in the background.

Need a screenshot of this page? Ask us and we'll send it over with advice for your build.