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Remote Start in 1998 BMW 528i


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liltimmy247 
Member - Posts: 2
Member spacespace
Joined: July 28, 2004
Posted: August 03, 2004 at 7:35 PM / IP Logged  

I am installing an Alpine alarm and DEI Remote start module in a 1998 BMW 528i.  Everything works as normal except for when the alarm is armed.  When the alarm arms it activates the factory security as well.  When activating the remote start the factory alarm is set off as soon as the ignition powers up.  There is no factory disarm, other than door unlock, that I am aware of.  I have done the EWS bypass and this allows the car to start as long as the doors are unlocked (factory security off).  I am sending 12V to all four Green wires (DEI page that I had only said there were 3) using the ignition, second ignition, and then 2 relays driving the other two ignitions from the third ignition wire on the DEI module.  I am also powering the accessory wire with the correct DEI wire.

Should I only be powering one or two of the greens? Or, is there a way to bypass the factory alarm during remote start?  Any help is appreciated.  FYI, I am a former installer and do not have access to current DEI tech support.

raydawg357 
Silver - Posts: 769
Silver spacespace
Joined: June 17, 2003
Location: United States
Posted: August 05, 2004 at 8:36 AM / IP Logged  
DIRECTWIRE™ WIRING INFORMATION - BMW / 5 SERIES / 1998 / Remote Start
[PRINT THIS PAGE]
12volts red  +  ignition harness
Starter BLACK / YELLOW  +  ignition harness
Second Starter     
Ignition green (x3)  +  ignition harness
Second Ignition purple  +  ignition harness
Third Ignition     
Accessory     
Second Accessory     
Keysense     
Power Lock blue/red  +  door module in driver door
Power Unlock BLACK/ white  +  door module in driver door
Notes: Unlock requires a double pulse.
Lock Motor     
Unlock Motor     
Parking Lights+     
Parking Lights- black    headlight switch
Notes: Cutting this wire turns on the parking lights. Use a relay to interrupt the wire to flash the parking lights. See DirectFax document 1055 for wiring information.
Hazards     
Turn Signal(L)     
Turn Signal(R)     
Reverse Light     
Door Trigger blue/red  +  dome light
Dome Supervision comes on with unlock    
Trunk/Hatch Pin BROWN / white  -  trunk pin
Hood Pin     
Trunk/Hatch Release gray/black  -  release switch
Power Sliding Door     
Factory Alarm Arm arms with lock    
Factory Alarm Disarm disarms with unlock    
Disarm No Unlock     
Tachometer black  ac  round diagnostic plug under hood
Wait to start     
Brake Wire BROWN / gray  +  brake pedal switch
Parking Brake     
Horn Trigger     
Memory Seat 1     
Memory Seat 2     
Memory Seat 3     
Remote Start in 1998 BMW 528i -- posted image.
Immobilizer Bypass Module:Required: YesType: EWS IIIPart #: 556U or 555B
Notes: See DirectFax document 1056 for additional wiring information.
Do it right the first time
raydawg357 
Silver - Posts: 769
Silver spacespace
Joined: June 17, 2003
Location: United States
Posted: August 05, 2004 at 8:37 AM / IP Logged  

Here's the link to doc# 1056.  Hope this helps

http://www.directechs.com/techtips/pdfs/resources/security/directed_techtips/1056.pdf

Do it right the first time
liltimmy247 
Member - Posts: 2
Member spacespace
Joined: July 28, 2004
Posted: August 05, 2004 at 10:04 AM / IP Logged  

Thanks raydawg357.  This is actually the information I already had.  I did some further checking and discovered the problem.  The problem is I hooked up the DEI remote start accessory wire to the second ignition (purple) wire.  This wire actually has voltage while cranking just like all of the greens.  When the remote start is activated it powers up its accessory wire then removes voltage while cranking.  This makes the BMW think that the key was put in, turned, then turned off.  This activates the interior lights which sets of the alarm.  To solve it I used several relays to supply 12 volts while cranking to all of the greens and the purple.

The problem now is when you activate the remote start the factory alarm sounds for a second then disarms.  Luckily it doesn't unlock the doors.  I will probably just pull the fuse for the factory security, unless it has any other effects, and/or hook up the factory siren to the alarming out wire of the alpine alarm.  This way at least the siren won't sound during a remote start.

Again, thanks for the info.  Now off to find the factory siren and brain.


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