That actually happened to me on my old car. I am assuming you don't have a remote key which is why you are using this... In my case, I just installed a remote door actuator and put a blank handle and called it a day. I wonder if you can buy a brand new cylinder and have it keyed to your existing key, that way you don't have to carry two keys... good luck

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2001 BMW X5 3.0 Sold
2008 VW jetta S
2006 Lexus Rx400h