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Faults, Fixes and DIY Please share your experience and knowledge with other members by contributing your own DIY, or by helping another member find the elusive fix!


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Old Tue, Jan-04-2005, 07:27:41 PM   #1
LSD4me
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Default EWS Bypass Workaround

I too was having painful issues with the EWS III in the 2004 E46's. I tried 3 different bypass modules until i made one myself.... 1st was the 555U universal...(Nope), then was the 555B module (Nope), and lastly the 556 which was supposed to replace the 555 models....NOPE

What i ended up doing is buying another Transponder Ring from BMW
(PN # 61 35 6 900 016) ($24.99) and used that in conjunction with 2 standard 30 AMP Bosch Relays. For those intereseted, read on:

1) The original Transponder Ring which is installed has 2 wires coming out. This connection needs to be severed and connected via the relays. Do one wire at a time. The new transponder ring is going to be installed as well using the same wire as the one from the original. Cut one of the wires and connect it to 1 relay as follows:

Pin 30 - Car side of the connection
Pin 87A - Ignition side of the connection
Pin 87 - Wire from NEW transponder ring
Pin 86 - Constant +12V
Pin 85 - Status Wire from Alarm or any (-) pulse

Once this is done, do the EXACT same thing to the other wire. This will in effect, activate the relay once a (-) signal is receieved and then will connect PIN 30 with PIN 87 which is the desired response. Viola. Attached is a makeshift diagram. Any questions, PM ME.
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Old Tue, Jan-04-2005, 07:42:03 PM   #2
Sirius
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Why are you bypassing EWS?
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Old Tue, Jan-04-2005, 08:23:10 PM   #3
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Quote:
Originally Posted by Sirius
Why are you bypassing EWS?
Remote Starter Install.

...Now that I look back, only 1 relay would be needed for this to work...the other wire, just tap in to the existing connection.
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Old Tue, Jan-04-2005, 08:28:46 PM   #4
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Gotcha.
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Old Wed, Jan-05-2005, 05:00:01 PM   #5
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THANK YOU!

Could you please post the revised 1 Relay Diagramme?

Also, could this be simplified if one were NOT using an alarm? If so, could you please post a diagramme?

Great stuff!
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Old Wed, Jul-13-2011, 10:46:58 PM   #6
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Default Re: EWS Bypass Workaround

HI, I Want to put a start switch on my car, its a 1997 328i, ews II, i have the factory installed alarm with the 2 button fob, i wonder??? is there a way to bypass the ews so when i deactivate my alarm that i can start the car with just the switch, or the toggle switch and then the switch, WITHIUT the key, i have the alarm with the keyless entry so everytime i got off my car id double lock my doors and alarm would be in place, thats good enough for me
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Discussing EWS Bypass Workaround in the Faults, Fixes and DIY Forum - Please share your experience and knowledge with other members by contributing your own DIY, or by helping another member find the elusive fix! at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)