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#1
11-20-2009, 11:05 AM
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Got Traction Control?
Hey all, Noob to BMWs here. I've been looking for a reasonably priced 90's BMW 5 series for a bit now. One thing I haven't found out is how to tell if the car has traction control. Is there an easy way to tell if the car has traction control or posi type rear end versus the standard open differential?
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#2
11-20-2009, 11:09 AM
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There is a button under the ashtray.
It says ASC. I'M not sure, but I think it was common on the '94's and '95's.
__________________
95 E34 Touring Black/Black Project Sinister
86 951 Black/Black Lindsey 3" Exhaust, Lindsey DP Wastegate, Lindsey Black Knob, 3 Bar FPR, MaxHP Chips SOLD 94 968 Polar Silver/Black, 6 speed, LSD, Kinesis K58's, Short Shift, Adjustable Konis, M030 Swaybars, KLA Upper Strut Bar, Design 1 Racing Lower Strut Bar, Air Box Mod, B&B Catback, RS Barn Chip, Big Reds http://www.cardomain.com/ride/2426788 "I got kicked out of Barnes and Noble for moving all the Bibles to the Fiction section." Last edited by PorscheDude; 11-20-2009 at 11:10 AM.. Reason: Automerged Doublepost
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#3
11-20-2009, 11:30 AM
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Oh OK, thanks PorscheDude, so if it has the button it has a posi-traction type axle and if there's no button then it's probably a open differential.
Last edited by 78kitty; 11-20-2009 at 12:03 PM..
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#4
11-20-2009, 11:34 AM
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No, I think most automatics with TC are open dif.
__________________
95 E34 Touring Black/Black Project Sinister
86 951 Black/Black Lindsey 3" Exhaust, Lindsey DP Wastegate, Lindsey Black Knob, 3 Bar FPR, MaxHP Chips SOLD 94 968 Polar Silver/Black, 6 speed, LSD, Kinesis K58's, Short Shift, Adjustable Konis, M030 Swaybars, KLA Upper Strut Bar, Design 1 Racing Lower Strut Bar, Air Box Mod, B&B Catback, RS Barn Chip, Big Reds http://www.cardomain.com/ride/2426788 "I got kicked out of Barnes and Noble for moving all the Bibles to the Fiction section."
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#5
11-20-2009, 12:05 PM
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OK, so is there any way to tell if a car's got a posi rear end? Like on Ford's if the axle code is 2 numbers it's open and if it's there's a letter in with it that means it has posi-traction, or whatever Ford called it at the time.
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#6
11-20-2009, 12:10 PM
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For the LS unit there will be an S on the case underneath the grime. A later car won't have it from the factory, they stopped around '92/'93
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-Denton
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#7
11-20-2009, 12:11 PM
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You can look at the metal tag attached to the final drive unit. If it starts with a 'S' (ex. S 373) then it has a limited slip differential. There isn't a way to tell without getting under the car, and most of them (especially since TC migrated into the cars) don't have a LSD.
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#8
11-20-2009, 12:49 PM
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WOW great info! So I'm guessing if is says S 373 it means there's a 3.73 geared limited slip differential under the car?
What would a 1995 regular 540I with a 6-speed likely have for traction control if any?
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#9
11-20-2009, 01:24 PM
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Quote:
It would have BMW's ASC for traction control. Not much else there unless you want the tech specs  Quote:
__________________
Quote:
Last edited by GarrettSR5; 11-20-2009 at 01:25 PM.. Reason: Automerged Doublepost
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#10
11-20-2009, 01:40 PM
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Quote:
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#12
11-20-2009, 03:09 PM
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Quote:
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#13
11-20-2009, 09:00 PM
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If i have a 94 e34 525i without an asc button, I am guessing it is open differential?
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