You can??? Hmmm.... I just tried on mine. If the X is off and I use central locking with the door open, it will lock 3 doors but not the one that is open.

I tried it with the car on, hit the central locking, and 3 doors lock but not the drivers.

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But I do agree with Naz. Use a remote start system or a turbo timer. With the remote start, you have to shut the car off and when you get out lock it, then start it again, but it accomplishes your task. A turbo timer works in the same way except, when you take the key out of the ignition, the switch is bypassed and the car is left on. From there you can lock it. When you are done, hop back in, turn the key to on then take off.

I mean have you tried using 2 keys? (Assuming you have both.) Leave the one in the ignition and then the spare to lock it? I'm not sure if it will work because the ECU registers the one key.

I mean I haven't tried any of these things, except the turbo timer on my Z32. I only had it on there because after hard pulls, I didn't want to oil to sit and burn up in the turbos and seize the bearings.

Only other reason you want the car one and lock it,I would suppose is if you're gonna rob a bank and need a clean get away, but you want to lock the car so no one steals your whip while doing said robbery?

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2011 E70 50i M Sport