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#1
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DSC 4x4 not activating
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#2
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What leads you to believe that the DSC is not activating?
The DSC is normally always active, with all-wheel-drive (4x4) being the normal operational mode. The DSC will manage the torque to each wheel (via transfer case clutches and ABS modulation) under all conditions. A failure of the DSC system (as detected by on-board diagnostics) is indicated by warning lights on the dash. Do you have any warning lights? If the internal (plastic) gear in the transfer case has worn to the point of failure, you will often hear it clicking under the car a couple of seconds after shutting the car down (when the DSC system does a self-alignment, after every drive). The clicking sound is the worm gear on the actuator motor, skipping on the worn teeth of the plastic gear.
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Wayne 2005 BMW X5 3.0d (b 02/05) 2001 BMW F650GS Dakar (b 06/01) Last edited by wpoll; 01-26-2022 at 09:21 PM. |
#3
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What he said.
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2011 E70 • N55 (me) 2012 E70 • N63 (wife) |
#4
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What leads you to believe that the DSC is not activating?
The message on cluster that "DSC/4xr4 not activated" |
#5
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Quote:
Hard to diagnose fully without a full scan with BMW software (or a Foxwell etc.) - could be a simple steering angle sensor issue, a worn transfer case gear or an error in the ABS module (which is also the DSC module). Try a simple calibration of the steering sensor (turn lock to lock a couple of times), then move to having a good listen to transfer case when shutting down the car...
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Wayne 2005 BMW X5 3.0d (b 02/05) 2001 BMW F650GS Dakar (b 06/01) |
#6
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Will do! Thanks!
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#7
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Also, this car hydroplaned and hit those sand filled barrels. It dented the doors and left front fender, and broke the tie rod in the front, and the control arm in the back. Both the tie rod and the control have been replaced and it has been aligned, so it is tracking straight, the guys that aligned it are very meticulous. Maybe this info helps fill in the picture?
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#8
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OK, so update, did the wheel side to side 3 x's, and then shut off the engine. Did not hear any noise, like clicking gears, and I got down ear level to underneath the car. 4x4 light is still on. I think it has something more to do with the wreck.
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#9
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Quote:
Best to get it scanned and determine if it is reporting on the network--just like everyone is saying.
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2003 BMW X5 3.0i -- MT5, 3.64s final gears, H&R lowering springs, K-Mac bushing kit 2007 BMW X3 3.0Si -- MT6 |
#10
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Got it, but you are talking about specialized BMW scanner, and not just an OBD 2 scanner, correct?
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dsc issue, dsc malfunction |
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