C220 CDI 2003 key Fob in ignition will not turn. All electronics buttons on fob works eg to lock, unlock boot opening except the flashing lights does not happen when locking. Battery is full charged. The main issue is the main key and spare does not even turn when put into the ignition. As the key is not able to turn I am unable to change gear. The steering wheels are not the problem for the keys to turn. I was told it need new ignition and would cost me £500 for parts and also labour charges. Help please