Quick Question about ASC |
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venomousXFROG
Advanced Newbie Joined: 21-September-2008 Location: Dublin ,Clondalkin Status: Offline Points: 26 |
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Posted: 26-July-2010 at 17:36 |
Hello All . If the light is on the does that mean ASC is turned off . so I take it if there is no light on , its off. Would having it on all the time be economical, fuel wise ? Any help , much appreciated ! thanks |
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Drive it like you stole it
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oilburner
Newbie Joined: 25-June-2010 Location: Dublin Status: Offline Points: 10 |
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Hi, I Suggest you don't play at all with ASC button until you R.T.F.M.! ASC has no effect on economy but leaving it on, might just save your bacon. Greg.
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venomousXFROG
Advanced Newbie Joined: 21-September-2008 Location: Dublin ,Clondalkin Status: Offline Points: 26 |
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Drive it like you stole it
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Eamo
Moderator Group Joined: 13-May-2003 Location: Ireland Status: Offline Points: 3450 |
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if the light is on then asc is off
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Andrew Rolland
Moderator Group Go away rain Joined: 19-August-2004 Location: Scotland Status: Offline Points: 6579 |
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If the light come as in it flashes at you it means that it is "saving your bacon" as it is momentarily controlling the wheel spin caused by too much right foot/your over ambitious corning/enthusiastic starts etc. This means it is working. No light normally = good i.e. you don't need to spend money on it. It should come on when starting then go out within a few seconds. If light is on = get diagnostic check to find what is wrong, most likely to be a wheel sensor. Andrew |
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Be exclusive and drive a Petrol 5 Series!
Current '13 62 F10 535i MSport Auto Previous '04 04 E60 545i SE Auto '03 53 E60 545i SE Auto (Stolen) '98 S E39 523i SE Auto |
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oilburner
Newbie Joined: 25-June-2010 Location: Dublin Status: Offline Points: 10 |
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Here is some info on ASC I came across t'other day. You should be able to find an owner's manual, or most of one, online.
TRACTION CONTROL SYSTEM OVERVIEW (ASC) THEORY OF TRACTION CONTROL Traction Control Systems are referred to as Automatic Stability Control (ASC), Automatic Stability + Traction Control (ASC+T), Dynamic Stability Control (DSC) or All Season Traction (marketing term). The traction control system has gone through several changes since its introduction in Model Year 1988. While each new version offered new innovations, the principle of traction control remains the same for any of these versions. The link between the vehicle and its driving environment is established by the frictional contact between the tires and the road surface. The ability to control the vehicle while driving, is lost as a result of excessive wheel spin or slip if either rear tire exceeds its ability to: • Maintain traction • Accept side forces to maintain directional control (lateral locating forces) The primary function of the traction control system is to maintain traction and stability of the vehicle regardless of the road surface condition. This is achieved by reducing the drive torque applied to the rear wheels or pulsing the rear wheel brakes to eliminate wheel slip depending on the version of traction control installed. The electronics for traction control operation are incorporated in the ABS control module and share many of the same components and sensors. The module determines the speed of the vehicle through a calculated average of the four wheel speed sensor inputs. Wheel slip/spin is then recognized by comparing the speed of the driven wheels to the front wheels. A critical slip ratio of greater than 5% between the wheels will cause the traction control regulation to begin. This slip ratio is established when the control module detects a wheel speed difference of 2 MPH or higher. |
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