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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 01-25-2012, 09:26 PM   #21
E46_330i_Stud
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^ all that does is program the remote. Has nothing to do with how the car runs.
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Old 01-26-2012, 07:42 AM   #22
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Well my luck finally turned I found some one who's a certified BMW mechanic and I tried doing the starter tap but still no luck and my cars automatic push start still work?
Well if that didn't do it then unless you have a bad ground or bad battery connections I'd tow it to get it diagnosed before wasting any money. Unfortunately you can't push start an automatic. It could still be the starter as tapping it doesn't always work, but if it does, it sure makes diagnosis easier. Could easily be a sensor not sending required signal to start or any number of antitheft systems getting in your way, your going to want a good BMW tech to read codes and run proper diagnostics.

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Old 01-26-2012, 01:06 PM   #23
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I thought I read you could push start an automatic...though I think you need to be in second and have a really steep hill, though on base, you should be able to just get a troop to push you...you don't really need a hill.

Anyway, as I said, I thought I'd read that not long ago here...but since it was here, the poster could have been mistaken...and since I'm here, I could be mistaken, as incredulous as that might sound!
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Old 01-26-2012, 03:54 PM   #24
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Unfortunately its not possible to push start an automatic. First of all, it could very easily damage the transmission to run it at speed without the car running due to lack of lubrication from the transmission pump. Second, the torque converter would not function in reverse and the car would act as if it was in neutral, failing to spin the engine which is the point of a push start.

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Old 01-26-2012, 04:17 PM   #25
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Old 01-30-2012, 08:15 AM   #26
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^ all that does is program the remote. Has nothing to do with how the car runs.
Without your key functioning like it should, your car will never start. Your key has both physical and electrical properties. Your key has a chip(transponder) which is powered by a rechargeable battery. The battery in the key gets recharge every time you turn your car on - like the main battery of the car. Rechargeable batteries, like all batteries rechargeable or not will die or loose its effectiveness at sometime. If your key are the original keys, then they are 6 - 13 years(1999-2006) old, very old. Once your the battery in the key reaches a certain threshold, it will loose the security information stored in it. Hence, you have to reprogram, re-sync, re-initialize it to start your car. Now, this may not be the issue for you. but it maybe for others. And, it takes seconds and it is free.
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Old 01-30-2012, 08:21 AM   #27
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The program your referring to is to program the remote keyless entry of the car and has NOTHING to do with the immobilizer or starting the car. My key was what I thought, dead, on my ZHP when I got it but still started the car perfectly fine. Before replacing the battery I tried the program and BOOM keyless entry worked. Again, you can start your car with out this functioning. How do you think the plastic wallet key works?
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Old 01-30-2012, 08:32 AM   #28
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The program your referring to is to program the remote keyless entry of the car and has NOTHING to do with the immobilizer or starting the car. My key was what I thought, dead, on my ZHP when I got it but still started the car perfectly fine. Before replacing the battery I tried the program and BOOM keyless entry worked. Again, you can start your car with out this functioning. How do you think the plastic wallet key works?
He's right, you have to have the dealer program the key with BMW software. There is no do it yourself method for chip programming. If it was that simple, our vehicles would be no more secure than pre-chip key cars from the mid 90's.
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Old 01-30-2012, 08:40 AM   #29
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He's right, you have to have the dealer program the key with BMW software. There is no do it yourself method for chip programming. If it was that simple, our vehicles would be no more secure than pre-chip key cars from the mid 90's.
Your saying I'm right or the other guy?

Edit: I was just saying that he was wrong in that the key remote program had something to do with starting the car. I'm not exactly sure about the program of the key for the immobilizer because the little plastic wallet key starts the car just fine without a program or the guts with a battery.
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Old 02-02-2012, 10:12 AM   #30
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The program your referring to is to program the remote keyless entry of the car and has NOTHING to do with the immobilizer or starting the car. My key was what I thought, dead, on my ZHP when I got it but still started the car perfectly fine. Before replacing the battery I tried the program and BOOM keyless entry worked. Again, you can start your car with out this functioning. How do you think the plastic wallet key works?
All BMW keys have a chip inside. Being able to start the car with a key that does not have one would defeat the purpose of the chip. I'm not sure but the reprogramming of the key I believe resets the values or set the system/s back to a default state which allows them to communicate back with each other.

ZKE (Central Body Electronics) include the following subsystems:
Central locking
Remote locking
Alarm system (DWA)
Electronic Drive Away Protection (EWS(immobilizer))
Power windows/sunroof
Windshield wiping/washing
Interior lighting
Electronic power protection

There are many reasons why our cars won't start and your keys is one of them.
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Old 02-02-2012, 10:27 AM   #31
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^pretty sure the immobilizer becomes disabled once the car has been unlocked by a programmed key with the chip. Not 100%.
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Old 02-02-2012, 10:34 AM   #32
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E46_330i_ stud

I was saying that you were right, There is no way to run any re-program proceedure on your own that has anything to do with the programming the key for starting the car. All the key can be programmed for at home is things like opening doors remotely, etc.
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Old 02-10-2012, 07:59 PM   #33
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Final verdict it was the starter
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Old 02-13-2012, 07:38 AM   #34
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Final verdict it was the starter
Thanks for giving us the outcome. Makes sense, too bad it wasn't manual or you could have push started it and known right away.

Tapping on the starter really only tells you its the starter if it works (which as you found, it doesn't always work)
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Old 02-13-2012, 12:24 PM   #35
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Thanks for giving us the outcome. Makes sense, too bad it wasn't manual or you could have push started it and known right away.

Tapping on the starter really only tells you its the starter if it works (which as you found, it doesn't always work)
Yea no problem just glad it's fixed now and it starts !!!
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