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E46 M3 (2001-2006) Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006.


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Old Tue, Mar-10-2009, 09:55:41 PM   #11
RedM3/4
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I've read these until I'm circling back on threads. Nice it works and there's even a kit, etc, but just to be clear, does cruise control work or just left side? I'm guessing so since you moved the M button, just want to verify.
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Old Tue, Mar-10-2009, 11:09:27 PM   #12
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if i read this correctly, everything should work except for cruise control as it uses the same pins as zcp DSC.
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Old Wed, Mar-11-2009, 06:05:35 AM   #13
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I've read these until I'm circling back on threads. Nice it works and there's even a kit, etc, but just to be clear, does cruise control work or just left side? I'm guessing so since you moved the M button, just want to verify.
Yes. I have cruise working using the right side buttons (plus the radio buttons work on the left side). I can engage/disengage track mode using my added button.

Cruise control is built into the DME and you just have to add the wiring and buttons to be able to send the commands for it to work. No special dealer activation is required.

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Old Wed, Mar-11-2009, 06:33:25 AM   #14
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Yes. I have cruise working using the right side buttons (plus the radio buttons work on the left side). I can engage/disengage track mode using my added button.

Cruise control is built into the DME and you just have to add the wiring and buttons to be able to send the commands for it to work. No special dealer activation is required.

great info man!! if i had a zcp i'd be all over this mod
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Old Wed, Mar-11-2009, 02:42:26 PM   #15
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That's pretty sick! Too bad we can't easily adapt M Track mode to non ZCPs, especially pre-CSL e46 M3s (no icon in the dash). I did some digging on RealOem and the DSC module is different, that and a few other things. Can't remember exactly cause I never saved what I found .
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Old Wed, Mar-11-2009, 08:02:27 PM   #16
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Cazz, how long did the mod take? Enabling cruise was just a matter of rewiring pin 8 on the harness to the DME?
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Old Wed, Mar-11-2009, 09:03:07 PM   #17
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Default Thanks Cazz, most awesome!

I've started looking for E46M3s now that my son is almost out of college. Now I can go ZCP if the rest of the car is what I want and plan my first mod before I even buy the car, whoohoo!
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Originally Posted by Cazz View Post
Yes. I have cruise working using the right side buttons (plus the radio buttons work on the left side). I can engage/disengage track mode using my added button.

Cruise control is built into the DME and you just have to add the wiring and buttons to be able to send the commands for it to work. No special dealer activation is required.

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Old Wed, Mar-11-2009, 10:24:28 PM   #18
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This is really interesting, I have a ZCP car and a older steering wheel panel in the basement with both the radio buttons and cruise control buttons...now to find the time to wire it up!

Seems like BMW was getting away on the cheap by reusing the CSL steering wheel panel to activate M-track mode rather than creating a new button panel with an extra button somewhere else. Hence ZCP cars lost access to the cruise and radio control, even though it's present. Now we know how to get it back!
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Old Thu, Mar-12-2009, 03:28:54 AM   #19
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Cazz, how long did the mod take?
It took me an afternoon. If you have experience taking the steering wheel cover off and getting to the LCM you should be able to do it faster. I could probably do the same job in about an hour the second time. The slowest parts are finding the correct wires to tap into on the LCM, finding the correct pin on DME and figuring how where to feed the wire through the firewall. Also, I accidentally popped the slip ring off and spent some quality time putting the clock spring back in. The DIY I was using said to remove the steering wheel. I don't think that is needed. The steering wheel covers and the column cover should come out without removing the 16mm bolt.

If I can find my USB camera cable I'll try to post some pics.

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Enabling cruise was just a matter of rewiring pin 8 on the harness to the DME?
You probably need to hook up all 3 wires: DME, power, i-bus.

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Seems like BMW was getting away on the cheap by reusing the CSL steering wheel panel to activate M-track mode rather than creating a new button panel with an extra button somewhere else.
Yeah. The whole ZCP panel confuses me. It has almost all the circuitry of the right side of the multifunction panel, yet only acts as a momentary switch. It uses no power or i-bus and I have tested that the only thing it does is connect 2 wires when the track button is pushed. Sad.

Since all 4 wires to the multifunction are being used, BMW could not add track mode to the wheel without changing the connector, the slip ring, etc. Still, they should have been able to add it to the dash, the column, or somewhere else.

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Old Thu, Mar-12-2009, 03:43:32 AM   #20
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This is really interesting, I have a ZCP car and a older steering wheel panel in the basement with both the radio buttons and cruise control buttons...now to find the time to wire it up!

Seems like BMW was getting away on the cheap by reusing the CSL steering wheel panel to activate M-track mode rather than creating a new button panel with an extra button somewhere else. Hence ZCP cars lost access to the cruise and radio control, even though it's present. Now we know how to get it back!
On the BT activation button, why not use the pairing button leads in the center console? It's simply a matter of shunting 2 leads with a momentary button.
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Discussing Info on steering wheel radio/telephone buttons on a ZCP car in the E46 M3 (2001-2006) Forum - Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006. at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)