Page 243 of 424

238 Parking brake
Te ch n ica l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index
Parking brakeTo engage, firmly depress parking brake pedal. When 
the electronic key is in starter switch position 2, the 
brake warning lamp in the instrument cluster should 
come on brightly. 
To release the parking brake, pull handle on instrument 
panel. The brake warning lamp in the instrument 
cluster should go out. 
A warning sounds and the parking brake warning 
message (see page 302) appears in the multifunction 
display, if you start to drive without having released the 
parking brake. 
Also see brake warning lamp on page 292.
Wa r n i n g !
When leaving the vehicle always remove the 
electronic key from the starter switch, take the 
KEYLESS-GO-card (if so equipped) with you and 
lock the vehicle. Do not leave children unattended 
in the vehicle, or with access to an unlocked 
vehicle. Children could release the parking brake, 
which could result in an accident or serious injury. 
         
        
        
     
        
        Page 247 of 424
242 Driving instructions
Te ch n ica l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index
Parking Important!
It is advisable to set the parking brake whenever 
parking or leaving the vehicle. In addition, move 
selector lever to position “P”.
When parking on hills, always set the parking brake.
Wa r n i n g !
To reduce the risk of personal injury as a result of 
vehicle m ovement, before
 turning off the engine 
and leaving the vehicle always:
1. Keep right foot on service brake pedal.
2. Firmly depress parking brake pedal.
3. Move the selector lever to position “P”.
4. Slowly release service brake pedal.
5. Turn front wheels towards the road curb.
6. Turn the electronic key to starter switch 
position 0 and remove, or press start-/stop 
button (vehicles with KEYLESS-GO).
7. Take the electronic key and the KEYLESS-GO-
card (vehicles with KEYLESS-GO) and lock 
vehicle when leaving. 
         
        
        
     
        
        Page 256 of 424

251 Driving systems
Te ch n ica l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index 3Canceling
To cancel the cruise control, briefly push lever to 
position 3.
When you step on the brake pedal or the vehicle 
speed drops below approx. 25 mph (40 km/h), for 
example when driving upgrade, the cruise control 
will be canceled.
If the illuminated speedometer segments begin to 
blink (e.g. when aquaplaning or when moving the 
gear selector lever to position “N” while driving), the 
cruise control is automatically switched off.
If the cruise control cancels by itself and remains 
inoperative until the engine is restarted, have the 
system checked at your authorized Mercedes-Benz 
Center as soon as possible.4Resume
If the lever is briefly pushed to position 4 when 
driving at a speed exceeding approx. 25 mph
(40 km/h), the vehicle resumes the speed which 
was set prior to the cancellation of the cruise 
control.
The selected speed is shown for approx. 5 seconds 
in the multifunction display, and the corresponding 
speedometer segments from the selected speed to 
the vehicle maximum speed are illuminated.
The last memorized speed is canceled when the 
electronic key in the starter switch is turned to 
position 1 or 0.
Important!
Moving gear selector lever to position “N” switches the 
cruise control off. 
         
        
        
     
        
        Page 260 of 424

255 Driving systems
Te ch n ica l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index The speed stored in memory is displayed in the 
multifunction display, and one or two segments around 
the stored speed light up in the speedometer dial, see 
page 267.
1Accelerate and set:
To increase the speed by 5 mph (Canada: 10 km/h) – 
brief ly lift lever up.
2Decelerate and set:
To reduce the speed by 5 mph (Canada: 10 km/h) – 
briefly depress lever.3Canceling
To cancel Distronic, briefly push lever to position 3. 
The last set speed remains stored in memory.
4Resume
•If the lever is briefly pulled to position 4 when 
driving at a speed above approx. 25 mph 
(Canada: 30 km/h), the vehicle resumes the 
speed which was selected prior to the 
cancellation of Distronic. 
•For minor increases of speeds in increments of 
1 mph (Canada: 1 km/h) – briefly pull lever to 
position 4.
The last memorized speed is canceled when the 
electronic key in the starter switch is turned to 
position 1 or 0.
1
3
4
2 
         
        
        
     
        
        Page 263 of 424

258 Driving systems
Te ch n ica l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index
Deactivation of Distronic
Briefly move the distronic control lever in “OFF” 
direction (3) – the stored speed remains in the memory 
until the electronic key in the starter switch is turned to 
position 1 or 0.
Distronic is also deactivated if:
•the service brake pedal is depressed,
•the parking brake is activated,
•the vehicle decelerates to less than approximately 
25 mph (Canada: 30 km/h), e.g. while maintaining 
the distance to the vehicle ahead.•the gear selector lever is moved to position “N”,
•the electronic stability program (ESP) is active,
•the electronic stability program (ESP) is switched off 
manually,
•Model CL 55 AMG only:
the vehicle speed exceeds approximately 160 mph 
(260 km/h).
Note:
A signal sounds and the message “DTR OFF” appears 
for 5 seconds in the multifunction display everytime 
Distronic is deactivated.
Wa r n i n g !
The Distronic switches off and releases the brakes 
when the vehicle decelerates below the minimum 
speed of 25 mph (Canada: 30 km/h) by operation of 
the system. At that time, the driver must apply the 
brakes in order to reduce vehicle speed further or 
bring it to a stop. 
         
        
        
     
        
        Page 264 of 424

259 Driving systems
Te ch n ica l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index Driving with Distronic activated
With the electronic key in starter switch position 2, the 
distance warning lamp l in the speedometer dial comes 
on and goes out with the engine running.
If the distance sensor detects a slower vehicle moving in 
front, your vehicle speed will be reduced by 
deceleration and braking of up to 20% of the vehicle 
braking capacity, so that you follow the vehicle ahead at 
the preset distance, see page 265. Segments in the 
speedometer illuminate to indicate the speed range from the speed of the vehicle in front up to your 
vehicle’s selected speed. See also page 266 for notes on 
the multifunction displays.
Wa r n i n g !
Distronic brakes (up to 20% of vehicle braking 
power) the vehicle to restore the preset distance or 
to maintain the speed. The brake pedal is 
automatically retracted as this happens.Keep driver’s foot area clear at all times, including 
the area under the brake pedal. Objects stored in 
this area may impair pedal movement which could 
interfere with the braking ability of the Distronic 
system.Do not place your foot under the brake pedal – your 
foot could become caught. 
         
        
        
     
        
        Page 270 of 424

265 Driving systems
Te ch n ica l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index Distronic settings
1Switch – for distance notification function
2Thumbwheel – for setting distance
Distronic provides a safe following distance range to the 
vehicle in front. The medium setting is noticeable by a 
detent in the center position of the thumbwheel (2). 
If you want to:
•Increase distance – turn thumbwheel (2) 
towards¯.•Decrease distance – turn thumbwheel (2) 
towards®.
To switch the distance notification function on or off:
To switch on – press upper half of switch (1). 
The indicator lamp in the switch lights up.
To switch off – press lower half of the switch (1). 
The indicator lamp in the switch goes out.
For distance notification function see page 264.
Notes:
With the distance notification function activated, you 
will still be advised by a continuous audible warning if a 
potential emergency braking circumstance has been 
detected, even if Distronic has been deactivated.
The last selected notification function mode (on/off) will 
be stored in memory, even when removing the 
electronic key from the starter switch.
Wa r n i n g !
It is up to the driver to exercise discretion to select 
the appropriate setting given road conditions, 
traffic, driver’s preferred driving style and 
applicable laws and driving recommendations for 
safe following distance. 
         
        
        
     
        
        Page 275 of 424

270 Driving systems
Te ch n ica l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index
ABS control
The ABS malfunction indicator lamp- in the 
instrument cluster comes on with the electronic key in 
starter switch position 2 and should go out with the 
engine running.
When the ABS malfunction indicator lamp in the 
instrument cluster comes on while the engine is 
running, it indicates that the ABS has detected a 
malfunction and has switched off. In this case, the brake 
system functions in the usual manner, but without 
antilock assistance.
For ABS malfunction indicator lamp, see page 294.
With the ABS malfunctioning, the BAS and ESP are also 
switched off. Both malfunction indicator lamps come on 
with the engine running.
If the charging voltage falls below 10 volts, the 
malfunction indicator lamp comes on and the ABS is 
switched off. When the voltage is above this value again, 
the malfunction indicator lamp should go out and the 
ABS is operational.If the ABS malfunction indicator lamp stays illuminated, 
have the system checked at your authorized 
Mercedes-Benz Center as soon as possible.
Note:
To alert following vehicles to slippery road conditions 
you discover, operate your hazard warning flashers as 
appropriate.
Wa r n i n g !
ABS cannot prevent the natural laws of physics 
from acting on the vehicle, nor can it increase 
braking or steering efficiency beyond that afforded 
by the condition of the vehicle brakes and tires or 
the traction afforded. The ABS cannot prevent 
accidents, including those resulting from excessive 
speed in turns, following another vehicle too 
closely, or aquaplaning. Only a safe, attentive, and 
skillful driver can prevent accidents. The 
capabilities of a ABS equipped vehicle must never 
be exploited in a reckless or dangerous manner 
which could jeopardize the user’s safety or the 
safety of others.