Mercedes-Benz S-CLASS SEDAN 2023 Function of Active Emergency Stop Assist User Manual
The function of Active Emergency Stop Assist
Active Emergency Stop Assist uses touch sensors to monitor whether the driver holds the steering wheel and initiates an emergency stop if necessary. If Active Steering Assist is deactivated, the accelerator and brake pedal are monitored as well as the steering wheel. A warning is issued when the steering wheel is not being held or when a pedal is not depressed, and the vehicle is in danger of leaving the lane. If Active Steering Assist is switched off, the system is available from a speed of approx. 37 mph (60 km/h). If Active Steering Assist is switched off, the system is available from a speed of approx. 37 mph (60 km/h).
Active Emergency Stop Assist issues the following warning in order:
- Display message 1 appears in the driver’s display.
- In addition to display 1 a warning tone sounds.
- The message Initiating Emergency Stop will appear in the driver’s display, a continuous warning tone will sound, the vehicle will no longer accelerate and, if necessary, slight belt tensioning will be produced.
- The vehicle speed is reduced in cement until it is at a standstill. Sharp brake impulses are also produced.
- Vehicles with Driving Assistance Package: If Active Distance Assist DISTRONIC is active and the driver unfastens the seat belt and driver’s door, an emergency stop can be initiated immediately.
- Depending on the country, a lane change to the adjacent right-hand lane is carried out, if possible.
When automatic braking is initiated, Active Distance Assist DISTRONIC is deactivated. Depending on the country, the hazard warning light system is switched on.
When the vehicle is stationary, the following actions are carried out:
- The vehicle is secured with the electric parking brake.
- The vehicle is unlocked.
- If possible, an emergency call is placed to the Mercedes-Benz emergency call center. Before automatic braking is initiated, you can cancel Active Emergency Stop Assist by steering.
- You can cancel the intervention by Active Emergency Stop Assist after automatic braking is initiated by one of the following actions:
- Accelerating or braking: the emergency stop is canceled, but the warning message, warning tone and power steering remain active
- Steering: power-assisted steering is canceled, the warning message and warning tone remain active and the vehicle continues to be braked emergency stop a maximum of three times within a driving cycle. After that, Active Steering Assist and Active Emergency Stop Assist are disabled until the vehicle has been restarted.
For the detection of vehicles and other obstacles, observe the system limits of the following functions:
- Active Distance Assist DISTRONIC (/ page 260)
- Active Steering Assist (/ page 268)
- Active Lane Change Assist (/ page 272)
- Active Brake Assist (/ page 274)
Active Lane Change Assist
The function of Active Lane Change Assist
Active Lane Change Assist supports the driver during lanes changes and the driver can activate it by indicating briefly. Active Lane Change Assist is only an aid and not a substitute for your attention. It is essential that you observe the notes on driving systems and your responsibility in the vehicle Operator’s Manual; you may otherwise fail to recognize dangers.
The following conditions must be fulfilled for a lane change:
- You are on a highway or high-speed major road.
- The vehicle speed is between approximately 50 mph (80 km/h) and 110 mph (180 km/h).
- The neighboring lane is separated by a broken lane marking.
- No vehicle or obstacle is detected in the adjacent lane.
- Since the last time the vehicle was started, the sensors have detected a vehicle at a suitable distance behind your vehicle.
- Active Lane Change Assist is selected in the multimedia system. multimedia system. multimedia system.
- Active Distance Assist DISTRONIC and Active Steering Assist are activated on highways.
The system is not available and must be reactivated in the following situations:
- Active Distance Assist DISTRONIC and Active Steering Assist were already activated before you entered the highway.
- The system briefly does not detect the road As soon as Active Lane Change Assist detects a suitable road, you can reactivate it with J, M or N.
Driver display on the Assistance menu
- Green arrow: lane change initiated
- Red arrow: lane change canceled
When Active Lane Change Assist is available, the± display will appear along with green arrows on the driver display.
- If the system has been activated but is not currently available, the ± display will appear along with grey arrows on the driver display.
If no vehicle or obstacle is detected in the adjacent lane and a lane change is permitted, the lane change will begin after the driver has indicated briefly. The lane change will be shown to the driver with a flashing green arrow next to the± steering wheel symbol. Green arrow 1 will be displayed in the appropriate adjacent lane on the Assistance menu on the driver’s display. The Lane Change to the Left message, for example, will also appear.
Active Lane Change Assist can be canceled in various situations, including the following:
- Change in the surrounding conditions (e.g. detected obstacle).
- The driver removes both hands from the steering wheel.
- The driver steers with too much force or in the opposite direction.
- The driver activates the turn signal indicator in the opposite direction.
- Active Distance Assist DISTRONIC or Active Steering Assist is deactivated.
- The vehicle cannot make the lane change as planned.
Cancellation of Active Lane Change Assist is displayed as follows:
- The arrow in the selected direction of travel turns red.
- A corresponding message appears on the driver display.
- In certain circumstances, a warning tone will sound
Risk of an accident when changing lane to an occupied adjacent lane Lane Change Assist cannot always clearly detect if the adjacent lane is free.
The lane change might be initiated although the adjacent lane is not free.
- Before changing lanes, make sure that the neighboring lane is free and that there is no danger to other road users.
- Monitor the lane change.
Risk of the accident if Lane Change Assist unexpectedly stops functioning If the system limitations for Lane Change Assist have been reached, there is no guarantee that the system will remain active. Lane Change Assist cannot then assist you by applying steering torque.
- Always monitor the lane change and keep your hands on the steering wheel. Observe the traffic conditions and steer and/or brake if necessary. System limits
The system may be impaired or may not function in the following instances:
- There is poor visibility, e.g. due to snow, rain, fog, heavy spray, and greatly varying ambient light or shadows on the road.
- There is glare, e.g. from oncoming traffic, direct sunlight or reflections.
- Due to insufficient illumination of the road, or if the exterior lighting indicates a malfunction.
- The windshield is dirty, fogged up, damaged, or obscured in the vicinity of the camera, e.g. by a sticker.
- The sensors are damaged, obscured, or dirty.
- The lane markings for one lane are either absent or unclear, or the markings change quickly, such as in a construction area or at intersections.
- The system does not detect a suitable road, for example, on tight bends or shortly after a on/off ramp.
- The lane markings are worn away, dark, or covered up, e.g. by dirt or snow.
- The distance to the vehicle in front is too short.
- The lane markings are worn away, dark, or covered up, e.g. by dirt or snow.
- The distance to the vehicle in front is too short and thus the lane markings cannot be detected.
- There are obstacles on the lane or projecting out into the lane, such as object markers.
- The tire pressure is too low.
Also, observe the system limits of Active Steering Assist and the information on vehicle sensors and cameras in the vehicle Operator’s Manual.
- The Active Lane Change Assist sensors will adjust automatically while a certain distance is being driven after the vehicle has been delivered. Active Lane Change Assist will be unavailable or only partially available during this teach-in process, and no arrows will be displayed next to the
- Active Steering Assist symbol.
Setting Active Lane Change Assist Multimedia system:
Home > Settings> Assistance > Driving
ACTIVE Spurwechsel Assistant (Active Lane Change Assist)
- Select ACTIVE Spurwechsel Assistant (Active Lane Change Assist).
- Choose between the On, Also Automatically, and Off (Off) setting options.
- The Also Automatically setting option can also be switched on and off on the quick-access menu. off, it will not be possible to operate ACTIVE Spurwechsel Assistant (Active Lane Change Assist).
Mercedes-Benz 2023 Top Accessories
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