Hi I tried to make a new key in the slot on 2005 e87 and now the car will not start even with the origional key. It was working fine before I started I was only making a spare key. I have a fault in dme ews line fault 2f45. The car cranks but won't start. I have tried disconnecting the battery for 30min and I left the car over night to sleep and the fault is still there . I also tried cas-dme sync it failed because of communication between cas and dme. There are no faults stored in cas. Can anyone help me out here
Thanks

Please check ISN in CAS and DME are they the same?

I fixed it, I read isn from dme and wrote it to cas, then carried out cas-dme alignment. And car started .

Glad that you solve it.
Always use Key learning Button 3 and 4 for key learning for remote keys.
Use button 2 for transponders only.
If you want to use remote keys, you must have HTag Pro key programmer.

Hi how much is hitag pro from you guys thanks

This is a tech support forum.
Please contact your dealer for pricing.

Ok thanks decno1