Hie Guys.
2002 c270 cdi, gear sticking on one gear and have to switch off to get the car to normalize. error picked up is coded P2500- message the transmission has an impermisible transmission ratio. please help if anyone has an idea what this could be. M/B is suspecting the valve unit in the gearbox is faulty while an oil leak is out because the gearbox was checked for leaks and there was none.