As I’ve been rebuilding my save file for Kerbal Space Program I’ve had a few issues where multiple rovers have the brakes “stuck” on, some had the lights on too, and I couldn’t disable them.

Many thanks to JonnyOThan over on Discord who helped me resolve this issue!

The problem was, in the save file (persistant.sfs) the ACTIONGROUPS for many items had an incorrect ‘last time used’ value.

I resolved the issue by searching for “ACTIONGROUPS” and found all the vehicles in question.  It looks like this:

ACTIONGROUPS
{
Stage = False, 0
Gear = False, 9508911.2079185
Light = True, 202204534.06481
RCS = True, 202198783.364204
SAS = True, 202198783.604204
Brakes = True, 202205973.805582
Abort = False, 0
Custom01 = False, 0
Custom02 = False, 0
Custom03 = False, 0
Custom04 = False, 0
Custom05 = False, 0
Custom06 = False, 0
Custom07 = False, 0
Custom08 = False, 0
Custom09 = False, 0
Custom10 = True, 202185685.789854

Note above that the ‘BRAKES” value is:

202198783.604204
Brakes = True, 202205973.805582

I changed the value to 0, like this:

202198783.604204
Brakes = True, 0

Now everything works!