2002 bmw x5 alarm/remote start

i would stick with DEI wiring diagram....they r almost 99% right.....u will need to wire into the drivers door for lock and unlock .....and wire into the LF and RF door for door triggers.....going to the domelight could cause false alarm triggering.

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

this would be smarter .....it is using the factory transponder ring.....that means no problems......the 556u ring prolly doesnt work in that car.

hi,

1.  i'd use the wiring in the door (key cylinder switch) for lock/unlock. the button in the console toggles between lock and unlock. if your system gives a lock pulse with each press of the lock button on transmitter, you may end up with the vehicles doors unlocked.

2.  you can use the domelight lead.  however, when the vehicle is turned off, the domelight will turn on, setting the alarm off.  use a pulse timer to disconnect the door trigger input to the alarm.

3. i've used both the factory ring and a 556U.  use the instructions for european vehicles (alternate method 2?)  wiring the unit in series with the factory ring.

4. the factory alarm will disarm with the key when started, usually gives a chirp of the siren when doing so.

5. the factory remote doesn't work when the vehicle is running, but there are ways to bypass that problem.

hope this helps

mark

hi,

to have the factory remote operate while running, you need to find the ignition lead at the BCM behind the glove box...violet/white if i recall.  problem is that if you isolate this lead, the vehicle doesn't start.  so you'll need a pulse timer and relays to connect and then disconnect this lead.  then you'll have a problem with the transponder/key ring.  BMW uses the ring also for key sensing.  the vehicle won't let you lock the doors with a key in the ignition...see pulse timer above.

so you have a 528T triggered by the status output (adjust for approximately 6-10 seconds). have timer give ground output on normally open contacts.  diode isolate to transponder bypass and a relay.  normally open and common contacts of this relay connect the ignition lead of BCM. an additional relay, triggered by status output, isolates this lead (normally closed and common contacts)

hope this helps

m