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Originally Posted by richardminco
All 4X4 Titans have ABLS (active brake limited slip). According to Nissan ABLS "Directs engine power to the side of the vehicle with the best traction while the abs system is applied to the side of the vehicle with less traction so the tires won't slip as much". So, how is this different than VDC?
Nissan states "Vehicle Dynamic Control (VDC) changes engine power and/or applies the brakes individually as necessary to help stabilize the vehicle in severe turning situations. VDC helps enhance performance in emergency avoidance maneuvers, helps improve vehicle directional stability, and helps provide improved control even on slippery road surfaces." So how is this different than traction control?
Nissan states "The Traction Control System (TCS) operates at all speeds and limits drive-wheel slip (wheel spin) under most conditions, improving driver control of the vehicle in slippery conditions as well as on dry surfaces if the throttle is over-applied."
So it appears the ABLS includes TCS with both engine and braking systems working together when wheels slip. If this is true, some of the other posts which discuss safety and traction would appear to be inaccurate.
What I don't understand is: If you have ABLS can you disengage it as you can the VDC? If you have VDC and disengage it, do you still have traction control (abs working but not engine power)?
I've heard that many VDC owners turn it off in dry conditions. Does that mean that if you hit a gravel patch on a corner you will spin the tires and potentially lose control?
Do owners of 4X4s without VDC ever sense the loss of engine power when wheels slip as described by others with VDC.
Thanks for sharing your knowledge and experiences...
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Richard,
ABLS helps with
FORWARD (and probably reverse)
traction by limiting wheel spin using the
braking system only, as I described it to you in my PM.
VDC uses
engine power to limit wheel spin. VDC uses
engine power and braking to correct for vehicle dynamics (whenever the vehicles programmed parameters for handling are not responding to driver inputs). ABLS does not perform these functions.
You CAN NOT disengage ABLS.
Don't confuse
ABS (anti-lock brakes) with
ABLS (Active Brake Limited Slip)