Start Off Assist
Details & Technology
After the service brake has been released, the applied braking pressure continues to be
provided by Start-Off Assist (AAS) for approximately two seconds. AAS activates on gradients
of approx. 4% or more, whether starting in forward or reverse gear.
If the direction of travel is downhill, AAS is not activated. AAS is also not activated if the
parking brake is engaged.
Benefits & Arguments
Easier hill starts
Temporarily prevents the vehicle from rolling away
Maintaining the brake pressure facilitates hill starts since the driver can find the biting point
of the clutch (with manual gearbox) without having to use the parking brake
©2015 Mercedes-Benz USA, LLC / Daimler Vans USA, LLC
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