Bought a series 3 a few months ago starting it is a bit wierd. On all modern cars you turn the key all the way round, which engages the starter and the engine starts. On my landy you turn the key all the way round and the starter turns over the engine but it will not start until you let the key go and it turns back a quarter turn. Is this normal or is the ignition switch wired up wrong. I have the correct series 3 switch by the steering column. Thanks for your help.