OK first, it's a necro and I apologise, but it was also the first RaceDepartment post that came up when I searched this issue; so I'm piggy-backing on this one for when someone else googles the problem.
I've posted a possible fix on the RR3 forums for the 'Device Missing' problem, hope this helps.
"Ok I think I've found the fix, specifically for the CSL Pedals issue, but the principle should carry over.
Go to \My Games\SimBin\RaceRoom Racing Experience\UserData\ControlSet, (make a backup of your control set) then open the original control set with Notepad++ or something; in my case my control set was 'ffs'.
You must make sure that the pedals you WILL be using are configured; in my case they are HE Sprints.
Run a search for 'DeviceName[' (no quotes) until you find the entry for the "Fanatec pedals", it will look similar to the following:
DeviceName[01]="FANATEC CSL Elite Pedals LC"
DeviceId[01]="(1644433079, -1, -1, 0)"
Axis [01, 00] Dead Zone="0.0"
Axis [01, 00] Sensitivity="0.5"
Axis [01, 00] Center="0.5"
Axis [01, 00] Range="1.0"
Now run the same search until you find your pedals, eg;
DeviceName[02]="HE Sprints"
DeviceId[02]="(268513463, -1, -1, 0)"
Axis [02, 00] Dead Zone="0.0"
Axis [02, 00] Sensitivity="0.5"
Axis [02, 00] Center="0.5"
Axis [02, 00] Range="1.0"
In the following,
DeviceName[01]="FANATEC CSL Elite Pedals LC" replace
"FANATEC CSL Elite Pedals LC" with "anything you want" - do NOT change DeviceName[01]=, leave that part alone.
Now do the same with DeviceId, so
DeviceId[01]="(1644433079, -1, -1, 0)" (the Fanatec pedal setting), becomes
DeviceId[01]="(268513463, -1, -1, 0)" (the HE Sprint setting).
My before and after is:
Before:
DeviceName[01]="FANATEC CSL Elite Pedals LC"
DeviceId[01]="(1644433079, -1, -1, 0)"
Axis [01, 00] Dead Zone="0.0"
Axis [01, 00] Sensitivity="0.5"
Axis [01, 00] Center="0.5"
Axis [01, 00] Range="1.0"
After:
DeviceName[01]="HE Sprints"
DeviceId[01]="(268513463, -1, -1, 0)"
Axis [01, 00] Dead Zone="0.0"
Axis [01, 00] Sensitivity="0.5"
Axis [01, 00] Center="0.5"
Axis [01, 00] Range="1.0"
Save the file then load the game; you'll likely have to setup gas/brake/clutch but that's it, you should be good to go."