The all-new Mercedes-Benz SLK - lifting the lid on safety!
November 18, 2010 - MONTVALE, NJ
Early next year, Mercedes-Benz will launch the all-new 2012 SLK-Class. The agile sports car will feature a bold, new design, exceptionally high levels of comfort, as well as plenty of open-air driving pleasure. At the same time, it will also set new safety standards for convertible sports cars. The third generation of this trend setting roadster will make use of a whole host of the latest assistance systems to support the driver, including the drowsiness detection system ATTENTION ASSIST, developed by Mercedes-Benz and fitted as standard equipment; available occupant protection system PRE-SAFEŽ, which is unique in the world; and the PRE-SAFEŽ Brake, which can apply the brakes autonomously in the event of an impending front-end collision. With the 2012 SLK-Class, Mercedes-Benz continues to set new standards of automotive safety.
The best or nothing the safety experts at Mercedes-Benz have long adopted this motto, coined by Gottlieb Daimler, as their guiding principle. Far from chasing ratings targets, they work intensively on attaining a level of safety which far exceeds the standards stipulated by the world's legislators. The most important component of their work is not in the laboratory or crash test facility, but real-world accident research. The result of this study is Real Life Safety, a concept which is based on research into thousands of accidents. Using this evidence, Mercedes-Benz engineers have created or refined most of today's assistance systems which effectively support drivers and have been adopted by many of the company's competitors.
ATTENTION ASSIST and ADAPTIVE BRAKE as standard
The 2012 SLK-Class will feature a unique combination of driver assistance systems to help avoid accidents. These include the drowsiness detection system ATTENTION ASSIST, which helps monitor the level of attentiveness of the driver and can provide an early warning of overtiredness.
Also making up part of the standard equipment is the ADAPTIVE BRAKE. It comprises ABS, the acceleration skid control system ASR and also active yaw control. In addition, it features the following functions:
supports the driver when moving-off on an incline, by preventing the vehicle from unintentionally rolling backward;
keeps the vehicle stationary without having to keep the brakes applied
continuously - for example when waiting at traffic lights;
if the driver abruptly releases the accelerator, ADAPTIVE BRAKE brings the brake pads into light contact with the brake discs as a precautionary measure, so that the necessary braking pressure can be attained quicker in the possible event of emergency braking;
automatically applies light brake contact in wet conditions to help dry the brake discs.
Emergency braking - detecting an acute risk of a front-end collision
Available as optional extras are the DISTRONIC PLUS proximity control as well as PRE-SAFEŽ Brake, already proven in other Mercedes-Benz models. Both systems work together and can initiate emergency braking automatically if there's an acute risk of an accident. In normal driving conditions, the radar-based DISTRONIC PLUS proximity control adjusts the distance to the vehicle in front automatically. If necessary, it can apply the brakes, even bringing the SLK Roadster to a stop, and accelerate it again. This takes some of the strain off the driver, particularly in bumper-to-bumper driving conditions. If the distance starts to narrow too quickly, the system gives the driver visual and audible warnings, thereby prompting the driver to take action, at which point he is also supported by the Brake Assist System PLUS (BAS PLUS).
If the systems detect an acute risk of a front-end collision and the driver does not react, the electronic system activates the PRE-SAFEŽ Brake after visual and audible warnings. In the initial stage, partial autonomous braking is initiated. If the driver does not react to this, the second stage of PRE-SAFEŽ Brake provides full, autonomous emergency braking.
Safety and comfort
The following optional features will be available to enhance both safety and comfort:
the optional Bi-Xenon lighting system provides lighting functions (Cornering light function and Active Curve Illumination), which are activated depending on the driving conditions.
the optional PARKTRONIC incl. Parking Guidance uses ultrasonic sensors to measure the length of parking spaces as the car drives past; the cockpit display then provides a schematic representation of the recommended parking maneuvers.
Only available from Mercedes-Benz the anticipatory occupant protection system PRE-SAFEŽ
An additional safety highlight which will be available in the new SLK (as part of the optional DISTRONIC PLUS system) is the anticipatory occupant protection system PRE-SAFEŽ. If the system detects an impending risk of an accident, it reflexively activates precautionary protective measures for the vehicle occupants, so that the seat belts and airbags can provide maximum protection during an impact. Mercedes-Benz developed PRE-SAFEŽ on the basis of research into actual accidents, and is the only manufacturer in the world to offer such a system.
In the 2012 SLK, additional post-crash measures will also supplement the PRESAFEŽ system to enable prompt assistance after an accident has occurred. Depending on the damage, the interior lighting can be switched on automatically, the side windows can be opened by two inches, to provide better ventilation in the interior, and in vehicles with memory seats the steering wheel can be moved upwards.
Taking into account all of the requirements of the rating institutes
In developing the new SLK, the requirements of Euro NCAP as well as all of the global consumer ratings have been taken into account. This has contributed to the development of the bodyshell structure of the vehicle, which follows established concepts and has been optimized in a number of detailed areas. These include, among other things, reinforced members, a new side impact structure and new fiber-reinforced roll-over bar.
In the event of an accident, front-mounted sensors and lateral satellite and rollover sensors help the central control unit to predict the nature and severity of the accident.
headbag and crash-responsive head restraints
The restraint systems with two-stage driver and front passenger airbags have also been enhanced. A new feature is the headbag, which provides generous lateral protection for the head during an impact. An additional thorax airbag in the seat backrest protects the upper body in the event of a side impact. The seat belts, with belt buckle tensioners and speed sensitive belt force limiters are also hallmarks of the high Mercedes-Benz safety standards.
So many systems (to go wrong)!! - I wonder how long before they bring out a car that just does everything for itself - to the point where you don't even have to get in it - it goes out, has a blast around the hills, then comes back and tells you how much it enjoyed its drive. How safe would that be?
I have a system like the DISTRONIC on the G37. It actually works quite well. When combined with cruise control, it slows and breaks the car when it senses a vehicle ahead. I had it set at 90 MPH on the way back from CA two weeks ago, and it worked flawlessly. When the vehicle in front cleared, it acclerated righ back to 90. I rarely touched the pedals or turned the system off. I could also set my preferred follow distance. So I could choose from about 100 yards distance to about 100 feet.
automatically applies light brake contact in wet conditions to help dry the brake discs.
Not opposed to more safety features in cars, just hope the computer controls of the systems are up to being "safe" and operational for the next 10 plus years. The sensors that trigger ABS and antiskid features in R170's have not been fool proof: search for threads on the ECU applying the brakes to one wheel out of the blue and causing the R170 to swerve unintentionally.
And it will be interesting to see what happens to rotor life in wet/damp climates if the pads are sweeping the rotors clear of water often. MB OEM brake pads literally come with sand paper grit (silicon carbide) to increase coefficients of frictions in the brake system. If the new system is sanding down your rotors continuously as you drive in wet weather, I wonder if rotor life will drop under 10K miles.
Protection for pedestrians
The new SLK roadster uses the latest technology in the area of pedestrian protection too. A sensor system is able to register an impact with a pedestrian and can ensure that the bonnet is immediately raised by 85 mm. This creates additional space between the bonnet and the components in the engine compartment. This in turn results in comparatively lower acceleration values for the head of the pedestrian during the impact, thus reducing the overall risk of injury.
As a result, the new SLK provides its occupants not only with a superior level of safety in all areas - something which is unique in this segment - but also enhanced safety for other road users too.
Looks entertaining - now we just have to figure out how to disable some of it for the track! :-)
I'm at one or another track 2 or 3 days a month and have never seen another SLK350, SLK55 nor any SLK. I seldom even see a MB except for a CLK Black. The owner says it is just too expensive to track so he now brings his MX5. In contrast BMW's abound. I don't think that will change. Perhaps it is different in Europe??????
The R172 puts me in mind of the new Camaro. Government Motors hyped it for so long that I was bored with it long before it ever got to the dealership. I finally test drove one a month ago and went from bored to dislike.
I'm at the bored point now with the R172. I have no interest in a car that stops just short of tucking me in bed at night. The Z4 is looking better and better and it comes standard with comfortable seats. MB still hasn't figured that one out.