Lehet.
[pawn]public OnVehicleDamageStatusUpdate(vehicleid, playerid)
{
   new Float:vhealth;
   GetVehicleHealth(vehicleid,vhealth);
   if(vhealth < 1000) SendClientMessage(playerid, 0xFFFFFF, \"Nyomd meg a 2-es gombot a kocsi javításához\");
   return 1;
}
public OnPlayerKeyStateChange(playerid, newkeys, oldkeys)
{
    if(GetPlayerState(playerid) == PLAYER_STATE_DRIVER)
{
   if(newkeys == KEY_SUBMISSION)
   {
      if(IsPlayerInAnyVehicle(playerid))
      {
         new vehicle = GetPlayerVehicleID(playerid);
         RepairVehicle(vehicleid);
      }
      else
      {
           return false;
      }
   }
}
return 1;
   
}[/pawn]
Nem teszteltem, de elvileg mûködnie kell.