Return to pit enter ingame - need help

I play GP4 with G27 steering wheel and during the racing and qualyfing (ingame) the car doesn't return to the pit , no matter if I press the key ENTER or Alt+Q like in the MOD from Gp4central . Please can someone help me in that issue , probably the mistake is in the G27 configuration but I can't fix the problem .
Thanks in advance

Just map the pit call to one of your buttons in the game parameters. i don't remember where it is exactly. You must create a custom wheel.

---