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E46 Xi Forum
The E46 XI was produced from 01-05 in sedan and touring body styles. Powered by either a 2.5L inline 6 in the 325xi or a 3.0L inline 6 330xi. Discuss all thing about BMW AWD E46 'Xi' here.

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Old 02-10-2011, 07:15 PM   #1
drumbum624
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Cool xi DSC Curiosity

So I've read plenty of different things about how our DSC works and also what options we have vs our RWD brothers. I know on the RWD HPF cars they could pull a fuse and completely eliminate stability control but I do not believe we can do that.
I learned from Gheybe in this thread: http://forum.e46fanatics.com/showthr...&highlight=dsc
Quote:
Originally Posted by Gheybe View Post
turn the key to II, hold DSC down for a loooooooooong time. Like almost 15 seconds.
Turn it on. It will be FULLY off. No matter what you do. Until you turn it on again. Do a little searching next time.
Now I was curious what would happen if I held down my DSC button while the car was on and running. I was actually in drive at the time held it down for 15 seconds. when i first pressed it in the DSC light lit up, then after however long i held it down it went back off. But this time it stayed off. And I couldn't turn it back on whether i pressed the button or held it down. So then i shut the car off, turned it back on, and i still no longer had control over my DSC with the button. I played around for a little bit and then turned to the forums for answers. well i didnt really find an answer so a few hours later i went back outside to try again and i had regained control.

Anyone have any idea what I did? And also what other control of my DSC and even maybe traction control can i change in my car?
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Old 02-10-2011, 09:29 PM   #2
SamDoe1
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xi is different. Holding that button down won't turn off any more than if you just hit it once.
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Old 02-10-2011, 09:31 PM   #3
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Quote:
Originally Posted by SamDoe1 View Post
xi is different. Holding that button down won't turn off any more than if you just hit it once.
thats what I thought but it seemed to lock out the ability to shut off DSC. go outside and try it
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Old 02-12-2011, 06:39 AM   #4
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My moms xi did the same thing. Restarting the car fixed it though

E46 M3 is weird with it's DSC. It's more or less completely off with just a single press, but you have to put it in "dyno mode" if you want to use a dyno. You can either do a weird combo of turning the car on and off with the DSC button, or you can use a laptop with INPA or DIS to disable it. Might be able to do the laptop method w/ the xi, not sure.
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Old 02-12-2011, 04:24 PM   #5
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I'm wondering why we're trying to disable it in the first place? Track testing with an XI? I've read where guys shut it off for Bat-Slides in the snow but what other value does shutting her down have? Just asking not judging.
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Old 02-12-2011, 08:07 PM   #6
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Quote:
Originally Posted by White_Knuckles View Post
I'm wondering why we're trying to disable it in the first place? Track testing with an XI? I've read where guys shut it off for Bat-Slides in the snow but what other value does shutting her down have? Just asking not judging.
Just curiosity. I just wanna learn whatever I can about my car.
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Old 02-12-2011, 09:16 PM   #7
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Gotcha, thought I might be missing out on something.

Someone mentioned when Dyno testing which makes sense.
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Old 02-12-2011, 09:18 PM   #8
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Xi Dsc lol.
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Old 02-12-2011, 09:26 PM   #9
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XI DSC is always on, even after you shut it "off." It just gives you a longer leash to fvck up. No sense in turning it off even if you could....what are ya gonna do? 4 wheel drifts? Lol.
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Old 04-19-2011, 01:32 AM   #10
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I was gonna be obnoxious and post like a really sick AWD drift vid but then i saw this and lolled
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Old 04-19-2011, 08:22 AM   #11
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I was more impressed by the bicycle burn.
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Old 04-19-2011, 10:02 AM   #12
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I was reading the manual yesterday(car broke) and it was my understanding that if you press it once light goes out and it just gives you more play but if you press and hold it shuts it off completely. Wish I would have known that when it was snowing I want to try.
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Old 04-19-2011, 10:12 AM   #13
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If you want your dsc off unplug your abs brain. Bmw does all it's dsc through the abs system. Without it you will have no abs or dsc. Stay safe I have many deep cheese grater marks on my tires from locking them up Also ABS helps you keep the car under control while braking without it. It's VERY dangerous if you don't know what you are doing. When those brakes grab at 80 and don't let go till 30.. Many scary things can happen. Once they bite, it will be hard to stay in control of the car. It CAN be very rewarding. GL

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Old 06-21-2011, 04:31 PM   #14
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I don't know if all 330xi have the downhill assist, but I am curious about that. I don't ever really plan on using it, but I can't seem to turn it on. I push it to turn it on and the light turns back off and nothing happens. I am wondering if there is something special you have to do to turn it on.
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Old 06-21-2011, 04:39 PM   #15
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I don't know if all 330xi have the downhill assist, but I am curious about that. I don't ever really plan on using it, but I can't seem to turn it on. I push it to turn it on and the light turns back off and nothing happens. I am wondering if there is something special you have to do to turn it on.
Ah one of the most utterly useless features of the car. All you have to do is stop, press the button, and let off the brake. At that point the car will do its thing if you have an auto. If you have a manual, keep it in first and have the car rolling with clutch engaged (pedal out). Once the car is rolling, push the button. As soon as you hit the brake or gas again, the function will shut off and unless you are going downhill, you likely won't notice anything.
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Old 06-21-2011, 04:49 PM   #16
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So what your saying is when I am driving through a canyon and coming out of the canyon, I can't turn it on to "assist" me in going downhill? That does seem useless. I don't see why you would ever need that on a sedan
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Old 06-21-2011, 05:15 PM   #17
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So what your saying is when I am driving through a canyon and coming out of the canyon, I can't turn it on to "assist" me in going downhill? That does seem useless. I don't see why you would ever need that on a sedan
You don't need it. The HDC is only for going down steep grades at slow speeds. At any downhill speed you'd be going in this car, it's not worth it.
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Old 06-21-2011, 07:49 PM   #18
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Originally Posted by SamDoe1 View Post
Ah one of the most utterly useless features of the car. All you have to do is stop, press the button, and let off the brake. At that point the car will do its thing if you have an auto. If you have a manual, keep it in first and have the car rolling with clutch engaged (pedal out). Once the car is rolling, push the button. As soon as you hit the brake or gas again, the function will shut off and unless you are going downhill, you likely won't notice anything.
Sam, you are incorrect on a couple things:

-HDC can be activated any speed below about 25mph.
-It slows you to about 8mph.
-Gas and brake can be used to go faster/slower without deactivating the system.
-Once you hit a certain speed it deactivates.
-It's one of the most utterly brilliant features of the car.

It's all in the owner's manual and works flawlessly on icy hills. I'd love a HAC button too . . .
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Old 06-22-2011, 10:34 AM   #19
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My apologies for the incorrect information, the way I said it is the way I get it to turn on.

The reason I gave my useless comment is that I have yet to ever find a need for using that system. I have driven down many an icy hill here in MN and have never come across a situation where I felt I should use it. I feel that HDC has a place on a Land Rover or something like that but not on a sport sedan.
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Old 06-22-2011, 01:53 PM   #20
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I'm wondering why we're trying to disable it in the first place? Track testing with an XI?
If you slip going up a snowy hill, DSC will apply brake to the wheel(s) that is slips and you end up getting stuck. Turning it off allows wheel slippage and get you up any slippery hill in the winter. I do it all the time.
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