inputs to help keep the vehicle going in the intended direction. If you are traveling at a speed that causes you to run off the road before ESC can provide any assistance, you may not experience the benefits of ESC.
ESC includes and/or works together with the ABS, BAS, ASR, EDL, and XDL systems (see below). ESC is switched on all the time. In certain situations when you need less traction or additional traction
cannot be achieved, you can switch off ESC by pressing the ASR button ⇒ fig. 255. Be sure to switch ASR on again when you no longer need less traction.
ESC can be switched on and off manually in Off-road Mode ⇒ Off-road mode.
Anti-Lock Brake System (ABS)
ABS helps to keep the wheels from locking up and helps to maintain the driver's ability to steer and control the vehicle. This means the vehicle is less likely to skid, even during hard braking:
x Push the brake pedal down hard and hold it there. Don't take your foot off the pedal or reduce the force on the pedal!
x Do not “pump” the brake pedal or let up on it!
x Steer the vehicle while pushing down hard on the brake pedal.
x ABS stops working if you release or let up on the brake.
When ABS is doing its job, you will notice a slight vibration through the brake pedal and hear a noise. ABS cannot shorten the stopping distance under all conditions. The stopping distance may even be longer, for instance, when driving on gravel or on newly fallen snow covering an icy or slippery surface.
When driving forwards on loose surfaces, a special off-road ABS is automatically activated. In this mode, the front wheels could lock briefly. This shortens the braking distance in off-road situations as the wheels dig into loose surfaces. This occurs only when driving straight ahead. When the front wheels are turned, the normal ABS is activated.
Brake Assist (BAS)
The Brake Assist System can help to reduce stopping distances. If you press the brake pedal very quickly, BAS detects an emergency situation. It then very quickly builds up full brake system pressure, maximizing braking power and reducing the stopping distance. This way, ABS can be activated more quickly and efficiently.
Do not reduce pressure on the brake pedal! BAS switches off automatically as soon as you release or let up on the brake.
Anti-Slip Regulation (ASR)
ASR reduces engine power directed to spinning wheels and adjusts power to the road conditions. Even under poor road conditions, ASR can make it easier to get moving, accelerate, and climb hills.
ESC and ASR can help when driving on loose surfaces (such as gravel) and in deep snow. If you get stuck in deep snow, you may be able to get going again by “rocking” the vehicle back and forth. ESC and ASR recognize this special driving situation and automatically increase the speed of the front wheels. Keep pressing the accelerator and let ESC increase the speed of the front wheels to help you keep moving or get moving again.
ASR can be switched on or off manually ⇒ Switching Anti-Slip Regulation (ASR) on and off.
Electronic Differential Lock (EDL and XDL)
EDL is applied during regular straight-line acceleration. EDL gently brakes a drive wheel that has lost traction (spinning) and redirects the drive force to other drive wheels. In extreme cases, EDL automatically switches off to keep the brake from overheating. As soon as the brake has cooled down, EDL automatically switches on again.
XDL is an extension of the Electronic Differential Lock system. XDL does not react to drive wheel slippage when driving straight ahead. Instead, XDL detects slippage of the inside front wheel during
Abbreviations
Abbreviation Meaning
A2DP Advanced Audio Distribution Profile for cross-manufacturer Bluetooth audio signal transmission compatibility.
ABS Anti-lock Brake System.
AFS Adaptive Front Lighting System.
AKI Anti-Knock Index.
AM AM (amplitude modulation).
ANSI American National Standards Institute.
ASL Automatic Shift Lock.
ASR Anti-Slip Regulation.
ATA Anti-Theft Alarm system.
BAS Brake Assist System.
cc Cubic centimeter unit of volume for specifying engine displacement.
ccm Cubic centimeters. Unit of measure for engine displacement.
CCS Cruise Control System.
CCS Cruise Control System.
CID Cubic inch displacement, unit of volume for specifying engine displacement.
cm Centimeter – metric unit of measure for length.
CO2 Carbon dioxide.
DIN Deutsches Institut für Normung (German Institute for Standardization).
DPF Diesel Particulate Filter.
DRL Daytime Running Lights.
DTMF Dual Tone Multiple Frequency.
EDL Electronic Differential Lock.
EN European Norm.
EON Enhanced Other Network (support for other radio networks).
EPC Engine control (Electronic Power Control).
ESC Electronic Stability Control.
ETC Electronic Toll Collection system.
FLA Headlight assistant.
FSI Fuel Stratified Injection.
g/mi Generated carbon monoxide amount in grams per mile driven.
GAWR Gross Axle Weight Rating.
GSM Global System for Mobile Communications.
GVWR Gross Vehicle Weight Rating.
