Coding the DTC button

mob17 · 08-12-2014, 05:21 PM

I have asked this in the UK section but haven't got a solid method, thats if its even possible.

I want to know if you can somehow code the car, so when you switch to DS mode, the DTC is turned on (normally you would press the button once).

Thanks

taibanl · 08-12-2014, 07:59 PM

I would have to speculate that it is HIGHLY unlikely.

Coding is merely changing variables which are already programmed to the car. In other word, that function exists somewhere, somehow, in some car, in some market.

I've never heard anything resembling what you're describing (other than Sport+ on F30 cars, but that's different)

mob17 · 08-12-2014, 09:15 PM

Quote:

Originally Posted by taibanl

I would have to speculate that it is HIGHLY unlikely.

Coding is merely changing variables which are already programmed to the car. In other word, that function exists somewhere, somehow, in some car, in some market.

I've never heard anything resembling what you're describing (other than Sport+ on F30 cars, but that's different)

Hmm what about including it in a remap or something?

Puerto Rican 335d · 08-13-2014, 07:12 AM

Hard to say it can be done but NO ONE has brought this forward and i feel its unlikely to be performed

Mayimbe · 08-13-2014, 10:35 AM

Just a thought. If there's a DS signal on the shifter's connector that you can tap into, you could make a small circuit to listen for it and then toggle the DTC button.

mob17 · 08-13-2014, 01:51 PM

Quote:

Originally Posted by Mayimbe

Just a thought. If there's a DS signal on the shifter's connector that you can tap into, you could make a small circuit to listen for it and then toggle the DTC button.

I suppose it could be done like you say, but not by me, i don't know much about electronics and wouldn't want to experiment on my car!

What about in the ECU, surely there something there you can tap into, or even modify by a flash or tune or something?

Thanks for all the replies guys, i guess no one has done this before.

eurojulien · 08-13-2014, 07:49 PM

You have to look at the logic on the DTC button. Is it simply grounding out a pin or is on the bus and communicates with the DTC module? if it's the former it'd be pretty easy to run a wire from the sport microswitch in the shifter to the DTC button, if it's the later it's probably a pain

mob17 · 10-03-2014, 03:44 AM

Suppose this is a dead idea then?

WreckerX5d · 10-03-2014, 08:02 PM

I would assume to say it's more than just a button. Only for the fact that you hold it down to turn TCS off completely.

08-12-2014, 05:21 PM	#1
mob17 Major General 402 Rep 5,614 Posts Drives: E92 335D Join Date: Mar 2012 Location: East Midlands, UK iTrader: (5)	Coding the DTC button I have asked this in the UK section but haven't got a solid method, thats if its even possible. I want to know if you can somehow code the car, so when you switch to DS mode, the DTC is turned on (normally you would press the button once). Thanks
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08-12-2014, 07:59 PM	#2
taibanl Brigadier General 286 Rep 4,116 Posts Drives: BMW Join Date: Sep 2010 Location: NA iTrader: (4)	I would have to speculate that it is HIGHLY unlikely. Coding is merely changing variables which are already programmed to the car. In other word, that function exists somewhere, somehow, in some car, in some market. I've never heard anything resembling what you're describing (other than Sport+ on F30 cars, but that's different)
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08-13-2014, 07:12 AM	#4
Puerto Rican 335d Brigadier General 236 Rep 3,488 Posts Drives: Montego Blue 335d Join Date: Jun 2011 Location: Puerto Rico(Dominican Republic 03/2017) iTrader: (0)	Hard to say it can be done but NO ONE has brought this forward and i feel its unlikely to be performed __________________ RENNtech Flash(Lenny Wu)/WAGNER IC Enkei Rajin 18"/Execuhitch Hitch/Koni FSD Soft Ride Bike Rack/Brava Synthetic Motor Oil(Made in Puerto Rico)/Meth(in the works)/CBU done w Andrew EGR Race Pipe (whoa! what an animal it is now)
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08-13-2014, 10:35 AM	#5
Mayimbe Private 4 Rep 55 Posts Drives: '07 E90 335Xi Join Date: Feb 2014 Location: UT iTrader: (2)	Just a thought. If there's a DS signal on the shifter's connector that you can tap into, you could make a small circuit to listen for it and then toggle the DTC button.
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08-13-2014, 07:49 PM	#7
eurojulien Second Lieutenant 41 Rep 244 Posts Drives: 135i/6 Join Date: Feb 2013 Location: SF iTrader: (0)	You have to look at the logic on the DTC button. Is it simply grounding out a pin or is on the bus and communicates with the DTC module? if it's the former it'd be pretty easy to run a wire from the sport microswitch in the shifter to the DTC button, if it's the later it's probably a pain
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10-03-2014, 03:44 AM	#8
mob17 Major General 402 Rep 5,614 Posts Drives: E92 335D Join Date: Mar 2012 Location: East Midlands, UK iTrader: (5)	Suppose this is a dead idea then?
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10-03-2014, 08:02 PM	#9
WreckerX5d Warrant Officer 381 Rep 1,340 Posts Drives: Deezul Join Date: Oct 2010 Location: Long Island, NY iTrader: (4)	I would assume to say it's more than just a button. Only for the fact that you hold it down to turn TCS off completely. __________________ Deleted, ATM I/C and tuned by B.R.R.
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