2015 Mercedes-Benz SLK ROADSTER Owner’s Manual

The 2015 Mercedes-Benz SLK Roadster Long is a captivating mix of dynamic performance and refined luxury. It captures the spirit of driving with the top down while adding a bit of sophistication. This longer version of the famous SLK Roadster has a sleek and stylish appearance and a carefully made interior that combines high-tech features with comfort. With its powerful engine choices, precise handling, and retractable hardtop, the SLK Roadster Long offers a thrilling driving experience while giving off an air of timeless elegance, making for unforgettable trips on the open road.

Driving safety systems

Overview of driving safety systems
In this section, you will find information about the following driving safety systems:

• ABS (Anti-lock Braking System) (page 61)
• BAS (Brake Assist System) (page 62)
• BAS PLUS (Brake Assist System Plus) (page 62)
• ESP® (Electronic Stability Program) ( page 63)
• EBD (Electronic Brake force Distribution) (page 67)
• ADAPTIVE BRAKE (page 67)
• PRE-SAFE® Brake (page 67)

Important safety notes
If you fail to adapt your driving style or become distracted, the driving safety systems can neither reduce the risk of accidents nor override the laws of physics. Driving safety systems are merely aids designed to assist driving. You are responsible for the distance to the vehicle in front, for vehicle speed and for braking in good time. Always adapt your driving style to suit the prevailing road and weather conditions and maintain a safe distance from the vehicle in front. Drive carefully.
The driving safety systems described only work as effectively as possible when there is adequate contact between the tires and the road surface. Please pay special attention to the notes on tires, recommended minimum tire tread depths, etc. (page 310).
In wintry driving conditions, always use winter tires (M+S tires) and if necessary, snow chains. Only in this way will the driving safety systems described in this section work as effectively as possible.

ABS (Anti-lock Braking System)
General information
ABS regulates brake pressure in such a way that the wheels do not lock when you brake. This allows you to continue steering the vehicle when braking.
The yellow! ABS warning lamp in the instrument cluster lights up when the ignition is switched on. It goes out when the engine is running.

Important safety notes 
WARNING If ABS is faulty, the wheels could lock when braking. The steerability and braking characteristics may be severely impaired. Additionally, further driving safety systems are deactivated. There is an increased danger of skidding and accidents.
Drive on carefully. Have ABS checked immediately at a qualified specialist workshop.

When ABS is malfunctioning, other systems, including driving safety systems, will also become inoperative. Observe the information
on the ABS warning lamp (Y page 245) and display messages which may be shown in the
instrument cluster (Y page 213).
ABS works from a speed of about 5 mph
(8 km/h), regardless of road-surface conditions. ABS works on slippery surfaces, even if you only brake gently.

Braking 

• If ABS intervenes: continue to depress the brake pedal vigorously until the braking situation is over.
• To make a full brake application:
  depress the brake pedal with full force.
  If ABS intervenes when braking, you will feel a pulsing in the brake pedal.
  The pulsating brake pedal can be an indication of hazardous road conditions, and functions as a reminder to take extra care while driving.

BAS (Brake Assist System)
General information
BAS operates in emergency braking situations. If you depress the brake pedal quickly, BAS automatically boosts the braking force, thus shortening the stopping distance.
Important safety notes

WARNING
If BAS is malfunctioning, the braking distance in an emergency braking situation is increased. There is a risk of an accident.
In an emergency braking situation, depress the brake pedal with full force. ABS prevents the wheels from locking.

BAS PLUS (Brake Assist System PLUS)
General information
Observe the “Important safety notes” section (Y page 61).
BAS PLUS is only available in vehicles equipped with DISTRONIC PLUS.
For BAS PLUS to assist you, the radar sensor system must be operational. With the help of the radar sensor system, BAS PLUS can detect obstacles that are in the path of your vehicle for an extended period of time.
If the radar sensor system is malfunctioning, BAS PLUS will not be available. The brake system is still available with complete brake boosting effect and BAS.
BAS PLUS can help you to minimize the risk of a collision with a vehicle or reduce the effects of such a collision. If BAS PLUS detects a danger of collision, you are assisted when braking.

Important safety notes
WARNING BAS PLUS cannot always clearly identify objects and complex traffic situations.
In such cases, BAS PLUS may:

• intervene unnecessarily
• not intervene
  There is a risk of an accident.
  Always pay careful attention to the traffic situation and be ready to brake. Terminate the intervention in a non-critical driving situation.

BAS PLUS does not react:

• to people or animals
• to oncoming vehicles
• to crossing traffic
• when cornering
  As a result, BAS PLUS may not intervene in all critical situations. There is a risk of an accident.
  Always pay careful attention to the traffic situation and be ready to brake.

In the event of snowfall or heavy rain, recognition can be impaired.
recognition by the radar sensor system is also impaired in the event of:

• dirt on the sensors or anything else covering the sensors
• there is interference by other radar sources
• there are strong radar reflections, for example in parking garages
• a narrow vehicle traveling in front, e.g. a motorbike
• a vehicle traveling in front on a different line relative to the center of your vehicle
  Following damage to the front end of the vehicle, have the configuration and operation of the radar sensors checked at a qualified specialist workshop. This also applies to collisions at low speeds where there is no visible damage to the front of the vehicle.

Function 
To avoid a collision, BAS PLUS calculates the brake force necessary if:
Ryou approach an obstacle, and
RBAS PLUS has detected a risk of collision
When driving at a speed under 20 mph (30 km/h): if you depress the brake pedal, BAS PLUS is activated. The increase in brake pressure will be carried out at the last possible moment.
When driving at a speed above 20 mph (30 km/h): if you depress the brake pedal sharply, BAS PLUS automatically raises the brake pressure to a value adapted to the traf-fic situation.
BAS PLUS provides braking assistance in hazardous situations with vehicles in front within a speed range between 4 mph (7 km/h) and 155 mph (250 km/h).
At speeds of up to approximately 40 mph (70 km/h), BAS PLUS can also react to stationary objects. Examples of stationary objects are stopped or parked vehicles.

If BAS PLUS demands particularly high braking force, preventative passenger protection measures (PRE-SAFE®) are activated simultaneously.
Keep the brake pedal depressed until the emergency braking situation is over. ABS prevents the wheels from locking.
BAS PLUS is deactivated and the brakes function as usual again, if:

• you release the brake pedal.
• there is no longer a risk of collision. Rno obstacle is detected in front of your vehicle.
• you depress the accelerator pedal. Ryou activate kick down.

ESP® (Electronic Stability Program)
General notes
Observe the “Important safety notes” section (Y page 61).
ESP® monitors driving stability and traction, i.e. power transmission between the tires and the road surface.
If ESP® detects that the vehicle is deviating from the direction desired by the driver, one or more wheels are braked to stabilize the vehicle. The engine output is also modified to keep the vehicle on the desired course within physical limits. ESP® assists the driver when pulling away on wet or slippery roads. ESP® can also stabilize the vehicle during braking.
ETS (Electronic Traction System)

Steering wheel

AIRSCARF
Activating/deactivating

WARNING
When AIRSCARF is switched on, very hot air can flow from the vents in the head restraints. This could result in burns in the immediate vicinity of the air vents. There is a risk of injury.
Reduce the heater output before it becomes too hot.

The AIRSCARF function warms the head and neck area of vehicle occupants with warm air. The warm air flows out of the holes in the head restraints.
The three red indicator lamps in the button indicate the heating level you have selected.

• Make sure that the SmartKey is in position 2 in the ignition lock.
• To switch on: press button 1.
  Three red indicator lamps in the button light up. The blower starts up after a preheating phase of seven seconds.
• Press button 1 repeatedly until the desired heating level is set.
• To switch off: press button 1 repeatedly until all the indicator lamps go out.
  The blower continues running for seven seconds to cool down the heating elements.

Problems with AIRSCARF 
AIRSCARF has switched off prematurely or will not switch on. The vehicle’s electrical system voltage is too low because too many electrical consumers are switched on.
Switch off electrical consumers that you do not need, such as the rear window defroster or interior lighting.
Switch on AIRSCARF again.

Important safety notes
Adjusting the steering wheel manually

1. Release lever
2. To adjust the steering wheel height
3. To adjust the steering wheel position (fore-and-aft adjustment)
   Push release lever : down completely in

A: Some alternatives to the 2015 G-Class include the Land Rover Range Rover, Toyota Land Cruiser, Lexus LX, and Porsche Cayenne.

FAQ