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Go Back   E46Fanatics > Tuning & Tech > Driveline, Engine & DME Tuning

Driveline, Engine & DME Tuning
Talk about driveline improvements, NA tuning and DME tuning your E46 BMW here. This includes diffs, intakes, exhausts, chips, software and OBD tuning.

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Old 06-04-2011, 09:16 AM   #1
benzedid
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engine starts with wallet key

i know this can be weird. i have all the four keys provided by BMW. the two "coded" keys with remote control, the vallet service parking key and finally the wallet key: that is the small plastic key that you get along to be stored somewhere safe on you, just in case your current key gets locked in your car so you can unlock them.

the deal is here: the manual clearly says that you may start the car with all the keys except with the wallet key. however, today i thought why not give it a try to start the car with the wallet key and see wat happens. now as far as i know, BMW keys are usually "programmed" or "coded" and have some sort of code use to identify the key as an authorized key. but... the engine started with the wallet key; that is the plastic key. isn't it strange? so does this mean that anybody can just steal a key, make a copy and take away the car??
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Old 06-04-2011, 09:27 AM   #2
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Thats really weird because our car keys need to be programed in order for it to actually start the car. I think you can crank the engine but the computer wont release fuel unless the codes match up
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Old 06-04-2011, 09:40 AM   #3
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yeah. but a PLASTIC WALLET KEY got no codes stored in it. lolz.... so how is it possible that it still start the engine??
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Old 06-07-2011, 05:40 PM   #4
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Did you by chance have your real key laying on the passenger seat or something?
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Old 06-07-2011, 11:32 PM   #5
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Quote:
Originally Posted by benzedid View Post
yeah. but a PLASTIC WALLET KEY got no codes stored in it. lolz.... so how is it possible that it still start the engine??
I have no idea. thats really strange

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Originally Posted by I_Miss_My_///M View Post
Did you by chance have your real key laying on the passenger seat or something?
what does this have to do with anything?
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Old 06-08-2011, 06:10 AM   #6
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Quote:
Originally Posted by I_Miss_My_///M View Post
Did you by chance have your real key laying on the passenger seat or something?
oh... i think i did have the key in my pocket. maybe i should try again.
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Old 06-08-2011, 06:11 AM   #7
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Quote:
Originally Posted by Chris-alfonso View Post
I have no idea. thats really strange


what does this have to do with anything?
yeah. the car is able to identify when the key is inside or out. when u leave the key inside, there is that red led on the dash that keeps blinking everytime. i'm gonna try with the coded key outside and then give some update.
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Old 06-15-2011, 12:27 AM   #8
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i've drove with my plastic key before. it was when i left the key at a friends when we partied and i couldnt find it.

found it a week later
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Old 06-15-2011, 04:52 AM   #9
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Originally Posted by Slammed_E46 View Post
i've drove with my plastic key before. it was when i left the key at a friends when we partied and i couldnt find it.

found it a week later
dnt u find it weird??
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Old 06-15-2011, 05:23 AM   #10
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That's trippy, make sure to park your car in the drive way :epps:

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Old 06-15-2011, 06:21 AM   #11
Dan330Ci~
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Quote:
Originally Posted by benzedid View Post
i know this can be weird. i have all the four keys provided by BMW. the two "coded" keys with remote control, the vallet service parking key and finally the wallet key: that is the small plastic key that you get along to be stored somewhere safe on you, just in case your current key gets locked in your car so you can unlock them.

the deal is here: the manual clearly says that you may start the car with all the keys except with the wallet key. however, today i thought why not give it a try to start the car with the wallet key and see wat happens. now as far as i know, BMW keys are usually "programmed" or "coded" and have some sort of code use to identify the key as an authorized key. but... the engine started with the wallet key; that is the plastic key. isn't it strange? so does this mean that anybody can just steal a key, make a copy and take away the car??
I thought the plastic key WAS the valet key? It will open everything exept the boot/trunk (try it) and start the car of course for valet purposes. I think maybe your 'valet key' is just an extra spare key?
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Old 06-15-2011, 08:02 AM   #12
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Quote:
Originally Posted by Dan330Ci~ View Post
I thought the plastic key WAS the valet key? It will open everything exept the boot/trunk (try it) and start the car of course for valet purposes. I think maybe your 'valet key' is just an extra spare key?
nah. ur wrong. the valet key is a metal key. BMW cars are delivered with 4 keys in all. the plastic key is the small key meant to be kept on u bcoz it is small and easily fits ur wallet. hence, wallet key. but i never tried the valet key though.
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Old 06-19-2011, 08:12 PM   #13
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i just tried starting the car with the little plastic key and it worked for me as well
a search suggested that there is actually an immobilizer in the plastic key
another post suggest the plastic key was meant to be used for making copies in case you lose your metal key

the plastic seems kind of flimsy for the pressure needed to turn on the engine
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Old 06-20-2011, 03:24 AM   #14
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or maybe BMW never coded anything and the engine can just start with any copies of the key. maybe there was never any such thing as coded or immobilizer... lolz. starting the engine with the plastic key seem pretty weird to me...
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Old 07-12-2011, 05:28 AM   #15
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This might sound stupid of me asking but it must be asked....

Do any of you have a remote start installed?

Immobilizer bypasses are installed on cars that carry a chipped key.
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Old 07-12-2011, 11:02 AM   #16
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remote start...? u mean to ask if my car starts with the remote control? nah... it doesn't.
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Old 07-12-2011, 11:07 AM   #17
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I read somewhere that the plastic key is coded, and is designed to wear and only start the car a handful of times before it wears out. For example you lose your key and order a new one, the plastic can get you by for a bit.
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