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General E46 Forum
This is the place to get answers, opinions and everything you need related to your E46 (sedan, coupe, convertible and wagon) BMW!

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Old 04-14-2013, 08:36 PM   #1
clarkson23
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Key Programming

If I have the BMW Scanner 1.4 and have had a new key cut for my 325i can i program the key to start my car using that tool?
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Old 04-14-2013, 09:06 PM   #2
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No.
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Old 04-14-2013, 09:07 PM   #3
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No.

EWS need a chip syncronized with the key. Likely your key may not even have the EWS chip.

New dealer keyfob precut that will start your car without any programming is $165 = tax, in NY around $175 out the door.
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Old 04-15-2013, 04:36 AM   #4
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No but I can. I'm the only one who has written a full tutorial on this. Read it.
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Old 04-15-2013, 06:44 PM   #5
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Are all 2004 e46 keys cut the same?
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Old 04-15-2013, 06:57 PM   #6
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If you're talking about the machinery used, yes but the e46 had 2 different types of key blades
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Old 04-15-2013, 07:10 PM   #7
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I know the difference between the two. So would this style key be the same cut as everyone?

http://www.ebay.com/itm/300878494592...4.m1438.l2649#
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Old 04-15-2013, 07:17 PM   #8
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For the most part yes. That's the same type of key I have
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Old 04-15-2013, 07:21 PM   #9
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Quote:
Originally Posted by clarkson23 View Post
I know the difference between the two. So would this style key be the same cut as everyone?

http://www.ebay.com/itm/300878494592...4.m1438.l2649#
I don't trust that seller. The seller shows one style of key, but, lists cars that use both types of cut key blades in the description. I call one groove cut (used on ALL E46's, E53's X5's, E83 X3, E85's & 86 Z4's) and the other I call edge cut (are used on all E38 7-series and E39 5-series). See picture below. How do you know you will get the correct one? The description doesn't say anything about letting the seller know what car you have so the correct one can be sent! I suggest contacting the seller to make sure he knows there is a difference between the keys required for the cars he lists. The uncut key blanks are different and not interchangeable. The groove cut blade is 2.9mm thick & 8.1mm wide where as the edge cut is 3.5mm thick & 7.2mm wide. The best thing to do is get the key from the dealer. These aftermarket keys typically don't recharge in the ignition like factory keys and require the battery to be replaced every so often. Aftermarket keys also are not made as well with thinner plastic and are also not as well sealed against moisture (housing snaps together to facilitate battery replacement). In the end the cost is not that much different if you consider the extra hassle involved. $25 for the key, then find a locksmith who can cut it $30-40 and then find someone who can program the transponder so it will start the car $?????. Who knows if there is anyone in your area who can program the transponder so that it will start the engine. For aftermarket keys to accomplish this step the EWS module needs to be taken out of the car and it's flash memory modified with an aftermarket key programmer tool and then the key programmed. A new key from the dealer start from about $160 (and goes up to whatever the dealer wants to screw you, so shop different dealers). These keys will come precut to the locks, preprogrammed to start the car and getting the remote to work takes 10 seconds (key resync procedure)


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Old 04-15-2013, 07:33 PM   #10
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I have never seen the one you refer to as the e39 type key on an e46 before either but have seen it on an e39 as you pointed out. However, there are always exceptions. Perhaps an e46 had to get new ignition lock due to some rare occurrence I don't see why it couldn't be fitted with that e39 type although it's not like they are short on the other style. I see what you mean but so long as you get the flat blade key and not the notch type it should work. Also make sure it has a transponder with it or you'll just need tk buy it separately.
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Old 04-15-2013, 07:38 PM   #11
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Regardless if you trust them, as long as they send you the physical key, there's no way it wouldn't work. I'm familiar enough with this topic that i feel confident that there's no way it wouldn't unless they just don't send it to you. Seeing as this is ebay and you're protected by them and PayPal, doubt it. They just trying to make a buck
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