- Keywords
- Introduction
- At a glance
- Safety
- Opening and closing
- Seats, steering wheel and mirrors
- Lights and windscreen wipers
- Climate control
- Driving and parking
- On-board computer and displays
- Stowing and features
- Transporting loads with the vehicle
- Maintenance and care
- Breakdown assistance
- Wheels and tyres
- Technical data
- Publication details
Date of printing:
07/02/2022Online Owner's Manual [In depth | Driving and parking | Driving systems]
Owner's Manual version: 06-13
Note: The online Owner's Manual is the latest version available. Deviations between this manual and items specific to your vehicle may occur since Mercedes-Benz constantly adapts its vehicles to the latest technology and modifies design and equipment. Please note that this online Owner's Manual does not under any circumstances replace the printed Owner's Manual which is supplied with the vehicle.
Driving systems
Quick access
Contents
| Cruise control |
| SPEEDTRONIC |
| Electronic level control (ENR) |
| All-wheel-drive |
| PARKTRONIC |
Cruise control
Important safety notes
Observe the notes on braking in the "Driving tips" section more.
If you fail to adapt your driving style or if you are inattentive, cruise control can neither reduce the risk of an accident nor override the laws of physics. Cruise control cannot take road, weather and traffic conditions into account. Cruise control is only an aid. You are responsible for the distance to the vehicle in front, for vehicle speed and for braking in good time.
Do not use cruise control:
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in traffic conditions that are unsuitable for driving at a constant speed, e.g. in heavy traffic, on winding roads or off-road
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on slippery roads. Braking or accelerating may cause the drive wheels to lose traction and the vehicle could then skid.
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when there is poor visibility, e.g. due to fog, heavy rain or snow
If there is a change of drivers, make sure that you inform the new driver about the set cruise speed.
General notes
Cruise control maintains the speed of the vehicle for you.
Use cruise control if road and traffic conditions make it appropriate to maintain a steady speed for a prolonged period. You can set any speed from 30 km/h upwards in increments of 1 km/h.
If you have set mph as the units for the digital speedometer more, you can set any speed from 20 mph upwards in increments of 1 mph.
Cruise control may not be able to maintain the stored speed on uphill or downhill gradients. If the gradient evens out and the vehicle's speed does not fall below 30 km/h, the stored speed is resumed.
Gearshift indicator for vehicles with manual transmission:
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change gear in good time, particularly on steep uphill gradients
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gently depress the accelerator pedal after changing gear. This improves the smoothness of the gear change.
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cruise control is deactivated if you depress the clutch pedal for longer than 6 seconds
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if you shift into neutral and release the clutch pedal, the engine speed may increase considerably. Deactivate cruise control beforehand.
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if the gear lever is in neutral after the clutch pedal is depressed, the engine speed may rise
Cruise control lever
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To activate and store the current speed or a higher speed |
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To activate at the last stored speed |
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To activate and store the current speed or a lower speed |
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To switch between cruise control and variable SPEEDTRONIC |
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To deactivate cruise control |
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LIM indicator lamp |
The cruise control lever is the uppermost lever on the left of the steering column.
You can operate cruise control and variable SPEEDTRONIC with the cruise control lever.
Activation conditions
To activate cruise control, all of the following activation conditions must be fulfilled:
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the cruise control function must be selected more
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the parking brake must be released. The
indicator lamp in the instrument cluster is off
Resuming the stored speed
WARNING
If you call up a stored speed and this is different from the current speed, the vehicle accelerates or brakes. If you do not know what the stored speed is, the vehicle may accelerate or brake unexpectedly. There is a risk of an accident.
Take the traffic conditions into account before calling up the stored speed. If you do not know what the stored speed is, store the desired speed again.
Setting the speed
Deactivating cruise control
The last speed set remains stored. The last speed stored is cleared when you switch off the engine.
Cruise control is deactivated automatically when:
-
you apply the parking brake and the
indicator lamp in the instrument cluster lights up
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you depress the clutch pedal for longer than 6 seconds while the vehicle is in motion
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you shift the manual transmission to neutral while the vehicle is in motion and release the clutch pedal
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you shift the automatic transmission to neutral position N while the vehicle is in motion
SPEEDTRONIC
Important safety notes
Observe the notes on braking in the "Driving tips" section more.
If you fail to adapt your driving style or if you are inattentive, SPEEDTRONIC can neither reduce the risk of an accident nor override the laws of physics. SPEEDTRONIC cannot take road, weather and traffic conditions into account. SPEEDTRONIC is only an aid. You are responsible for the distance to the vehicle in front, for vehicle speed and for braking in good time.
If there is a change of drivers, make sure that you inform the new driver about the set cruise speed.
General notes
SPEEDTRONIC helps you to avoid exceeding a set speed.
You can set a variable or permanent speed limitation:
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permanent, for long-term speed restrictions, e.g. when driving on winter tyres more
When the engine is running, you can use the cruise control lever to store any speed above 30 km/h as the speed limitation, even if the vehicle is stationary. You can adjust the speed limitation in increments of 1 km/h and 10 km/h.
If you have set mph as the unit for the digital speedometer more, you can set any speed above 20 mph as the speed limitation. You can adjust the speed limitation in increments of 1 mph and 5 mph.
You can only exceed the speed limitation stored by variable SPEEDTRONIC if you:
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deactivate variable SPEEDTRONIC using the cruise control lever.
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depress the accelerator pedal beyond the pressure point (kickdown with automatic transmission). The speed at which you are currently driving must not deviate from the stored speed limitation by more than 20 km/h. Variable SPEEDTRONIC is deactivated automatically.
Variable SPEEDTRONIC
Cruise control lever
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To activate and store the current speed or to increase the speed limitation in increments of 10 km/h |
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To activate and call up the last stored speed or to increase the stored speed limitation in increments of 1 km/h |
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To activate and store the current speed or a lower speed |
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To switch between cruise control and variable SPEEDTRONIC |
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To deactivate variable SPEEDTRONIC |
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LIM indicator lamp |
The cruise control lever is the uppermost lever on the left of the steering column.
You can operate cruise control and variable SPEEDTRONIC with the cruise control lever.
LIM indicator lamp shows you which function you have selected:
You can use the cruise control lever to limit the speed to any speed above 30 km/h while the engine is running.
Displaying the speed limiter
Vehicles with steering wheel buttons:
After switching on and when setting the speed limitation, the Speed limit message and the stored speed are shown in the upper part of the display for approximately 5 seconds. The stored speed is then shown highlighted in the lower section of the display.
Vehicles without steering wheel buttons:
You will see the ... LIM km/h message and the stored speed in the display more.
The speed limitation may be exceeded on downhill gradients even if variable SPEEDTRONIC is activated.
If the vehicle exceeds the set speed limitation, the ... Speed limit km/h or ... LIM km/h message is displayed and the stored speed flashes in the display. If the vehicle continues to accelerate, a warning tone also sounds three times.
On vehicles with steering wheel buttons, the Limit ... km/h exceeded message is then displayed for approximately 5 seconds.
Deactivating variable SPEEDTRONIC
There are various ways to deactivate variable SPEEDTRONIC:
The last speed limitation set remains stored. The last speed limitation stored is deleted when you switch off the engine.
Variable SPEEDTRONIC is deactivated automatically if:
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on vehicles with manual transmission, you shift to a higher gear and as a result the engine speed is too low.
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you depress the accelerator pedal beyond the pressure point (kickdown with automatic transmission). The speed at which you are currently driving must not deviate from the stored speed limitation by more than 20 km/h.
Permanent SPEEDTRONIC
General notes
The speed can be permanently limited to a value between 160 km/h (e.g. for driving on winter tyres) and 190 km/h or 210 km/h for:
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vehicles without steering wheel buttons - at a qualified specialist workshop
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vehicles with steering wheel buttons - by using the on-board computer when the vehicle is stationary more
Permanent SPEEDTRONIC remains active even if variable SPEEDTRONIC is deactivated.
You cannot then exceed the set speed limitation even if you depress the accelerator pedal beyond the pressure point (kickdown for automatic transmissions).
If you accelerate the vehicle using the accelerator pedal, the Speed limit Winter tyres ... km/h or ... LIM km/h message is shown shortly before the set speed limitation is reached.
Permanent SPEEDTRONIC controls the speed and the vehicle stops accelerating. You should then ease off the accelerator pedal accordingly.
The speed limitation may be exceeded on downhill gradients even if variable SPEEDTRONIC is activated.
If the vehicle exceeds the set speed limitation, the Speed limit Winter tyres ... km/h exceeded or the ... LIM km/h message is displayed and the stored speed flashes in the display. If the vehicle continues to accelerate, a warning tone also sounds three times.
On vehicles with steering wheel buttons, the Speed limit Winter tyres ... km/h exceeded message is shown for approximately 5 seconds.
or 
button repeatedly until the 
button to switch to the submenu selection.
or 
to select the Electronic level control (ENR)
Important safety notes
WARNING
WARNING
If you park a vehicle with pneumatic suspension and leave the ignition switched on, the pneumatic suspension remains active. If you then raise the vehicle using the jack, the pneumatic suspension attempts to compensate the vehicle level. The jack could tip over. There is a danger of injury.
Remove the key from the ignition lock before raising the vehicle. This prevents automatic readjustment of the vehicle level.
WARNING
When driving at a raised vehicle level, the driving characteristics may be significantly affected by the vehicle's raised centre of gravity. The vehicle may be more liable to tip when cornering, for example. There is a risk of an accident.
Always select as low a vehicle level as possible and adjust your driving style accordingly.
WARNING
If ENR is malfunctioning, the vehicle level may be asymmetrical, too high or too low. The driving and steering characteristics of the vehicle may be noticeably different. There is a risk of an accident.
Drive carefully and adapt your driving style to the changed driving characteristics or stop the vehicle, paying attention to road and traffic conditions. Contact a qualified specialist workshop.
If the 
indicator lamp lights up in the instrument cluster while you are driving more or the ENR not activated
more message appears in the display, ENR is malfunctioning.
If the indicator lamp flashes rapidly in the instrument cluster while you are driving or
the ENR Warning! Vehicle height message appears in the display, the vehicle level is too high or too low. The vehicle
driving and steering characteristics are changed noticeably. ENR adjusts the vehicle
level to the normal level as soon as possible. Continue to drive on carefully until
the indicator lamp goes out or the display message disappears. Only then is the vehicle
at normal level.
The level of the vehicle depends on vehicle load and the load distribution. On vehicles with an air-sprung rear axle, ENR compensates the level between front and rear axle automatically. The vehicle level is always maintained at the normal level, regardless of vehicle load. Driving dynamics remain unaffected.
Automatic mode can be deactivated when the vehicle is stationary and the vehicle level can be raised or lowered manually, e.g. for loading/unloading. When working on the vehicle or changing a wheel, you can deactivate ENR.
If you drive at speeds of 2 km/h or more, automatic mode and ENR are reactivated automatically.
If the ENR compressor threatens to overheat, e.g. due to repeated raising or lowering within a short period, ENR is automatically deactivated (play protection). You can raise or lower the vehicle again after approximately 1 minute.
Raising/lowering the vehicle level
or 
button for approximately 2 seconds.
Problems with ENR
|
Problem |
Possible causes/consequences and |
|---|---|
|
You cannot raise or lower the level of the vehicle when stationary. |
SolutionsAll-wheel-drive
Never tow the vehicle with one axle raised. This may damage the transfer case. Damage of this sort is not covered by the Mercedes-Benz implied warranty. All wheels must remain either on the ground or be fully raised. Observe the instructions for towing the vehicle with all wheels in full contact with the ground.
You can find information about changing a wheel in the "Breakdown assistance" section more.
If you fail to adapt your driving style or if you are inattentive, the permanent 4x4 all-wheel drive can neither reduce the risk of an accident nor override the laws of physics. The 4x4 all-wheel drive system cannot take road, weather and traffic conditions into account. The 4x4 all-wheel drive system is only an aid. You are responsible for the distance to the vehicle in front, for vehicle speed and for braking in good time.
The 4x4 all-wheel drive system provides permanent drive to all four wheels. If a driven wheel spins due to lack of traction, the all-wheel drive system improves the traction of your vehicle in conjunction with ESP® and 4ETS.
If a driven wheel spins due to lack of traction:
Use winter tyres (M+S tyres), with snow chains if necessary, when the conditions are wintry more. This is the only way to get the full benefit from the all-wheel drive system.
You will find information on driving on unpaved surfaces in the "Driving off-road" section more.
PARKTRONIC
Important safety notes
PARKTRONIC is only an aid. It cannot replace your own awareness of the immediate surroundings. You are responsible for safe manoeuvring, parking and pulling away. When manoeuvring, parking and pulling away, make sure that there are no persons, animals or objects in the manoeuvring area.
PARKTRONIC does not account for obstacles that are:
PARKTRONIC is an electronic parking aid with ultrasonic sensors. It indicates the distance between your vehicle and an object visually and audibly.
Your vehicle features two separate sound emitters with different frequencies for the warning tones. The warning ranges in front of and behind the vehicle are indicated by different warning tones.
PARKTRONIC is automatically activated when the key is turned to position 2 in the ignition lock and the parking brake is released.
On vehicles with automatic transmission, you must also move the selector lever to position D, N or R.
PARKTRONIC is deactivated at speeds above 18 km/h. PARKTRONIC is reactivated at speeds below 16 km/h.
PARKTRONIC monitors the area around your vehicle with sensors in the front and rear bumpers.
Range of the sensors
The sensors must be free of dirt, ice or slush. Otherwise, they cannot function correctly. Clean the sensors regularly, taking care not to scratch or damage them more.
If an obstacle is within this range, all segments of the warning displays light up and you hear a warning tone. If the distance between the vehicle and the obstacle falls below the minimum range, it is possible that the distance may no longer be displayed.
Warning displays
Front area warning display on the centre of the dashboard
Rear area warning display in the rear at centre of the roof lining
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Warning segments for the left side of the vehicle |
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Warning segments for the right side of the vehicle |
The warning displays show the distance between the sensor and the obstacle.
The warning display is divided into six yellow and two red segments for each side of the vehicle. When the first yellow segment lights up, PARKTRONIC is operational.
There is a malfunction if only the red segments of the warning display light up more.
The position of the gear lever or selector lever determines whether the front and/or rear area is monitored.
One or more segments light up as the vehicle approaches an obstacle, depending on the vehicle's distance from the obstacle.
From the first red segment onwards, you also hear a warning tone for approximately 2 seconds. This means that the vehicle's distance to the obstacle is about to fall below the minimum distance.
Roll-back warning
PARKTRONIC automatically monitors the area behind the vehicle if the vehicle begins to roll backwards without reverse gear engaged, e.g. after stopping on an uphill gradient.
If PARKTRONIC recognises an obstacle at a distance of at most 80 cm, all the segments in the warning displays light up. A continuous warning tone also sounds as the vehicle approaches the obstacle and for a further 2 seconds after the vehicle has come to a halt.
button.
Trailer towing
PARKTRONIC is deactivated for the rear area when you establish an electrical connection between your vehicle and a trailer.
After uncoupling the trailer, unplug the 7-pin connector adapter from the socket more. Otherwise, PARKTRONIC remains deactivated for the rear area.
Remove a detachable trailer coupling if it is no longer required. PARKTRONIC measures the minimum detection range to an obstacle from the bumper, not the ball coupling.
Problems with PARKTRONIC
|
Problem |
Possible causes/consequences and |
|---|---|
|
Only the red segments in the PARKTRONIC warning displays are lit. A warning tone also sounds for approximately 2 seconds. PARKTRONIC is deactivated after approximately 20 seconds. The indicator lamp of the |
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The PARKTRONIC warning displays implausible distances. For example, all the segments may be lit even though there is no obstacle present. |
The PARKTRONIC sensors are dirty or iced up.  Clean the PARKTRONIC sensors more. The licence plate or other parts attached near the sensors may not be secured correctly. An external radio or ultrasonic source may be causing interference. |
Notes
Date of printing:
07/02/2022Online Owner's Manual [In depth | Driving and parking | Driving systems]
Owner's Manual version: 06-13
Note: The online Owner's Manual is the latest version available. Deviations between this manual and items specific to your vehicle may occur since Mercedes-Benz constantly adapts its vehicles to the latest technology and modifies design and equipment. Please note that this online Owner's Manual does not under any circumstances replace the printed Owner's Manual which is supplied with the vehicle.