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236 Parking system
Te ch n i c a l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index
Warning indicators
1Frame
2SegmentsVisual and audible signals indicate to the driver the 
relative distance between the vehicle and an obstacle.
Warning indicators for the front area are located above 
the center air outlets in the dashboard.
Warning indicators for the rear area are located in the 
rear passenger compartment lamp.
The frames are illuminated when the Parktronic is 
engaged.
Each warning indicator has 6 yellow and 2 red 
segments.
As soon as the sensors detect an obstacle, one or more 
segments light up, depending on the distance. An 
intermittent acoustic warning will also sound as the 
seventh segment lights up and a constant acoustic 
warning lasting a maximum of 3 seconds will sound for 
the eighth segment.
1
12
2 
     
        
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237 Parking system
Te ch n i c a l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index Monitoring reach of sensors
Front bumper:
Rear bumper:The first yellow segment lights up at these distances. 
Additional segments light up as the vehicle comes 
closer to the obstacle.
Minimum distance between vehicle and obstacle at 
which the system stops indicating: Center approx. 40 in  (100 cm)
Corner approx. 24 in (60 cm)
Center approx. 48 in (120 cm)
Corner approx. 32 in  (80 cm)
P54.65-2299-26
Front corners approx. 6 in  (15 cm)
Front center and rear approx. 8 in (20 cm)
P54.65-2300-26 
     
        
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238 Parking system
Te ch n i c a l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index
The obstacle may not be recognized if outside the 
shaded sensor field, and no longer be indicated when 
approaching it any closer (warning indicators go out).
Parktronic malfunction
All red segments of the warning indicators light up, and 
a warning sounds for 3 seconds, if Parktronic does not 
function properly.
A dirty sensor could be the reason. (See page 317 for 
instructions on cleaning the sensors in the bumpers.)
After cleaning the sensors, turn electronic key in 
steering lock to position 2. If the defect continues to be 
displayed, have the system checked at your authorized 
Mercedes-Benz Center.Parktronic switch
The switch is located on the center console.
1Parktronic switched off
2Parktronic switched on
3Indicator lamp – comes on when Parktronic is 
switched off
The parktronic system is switched on again when 
turning the electronic key in steering lock position 2.3 
     
        
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241 Check regularly and before a long trip
Te ch n i c a l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index Check regularly and before a long trip
E 320 shown1Windshield washer system
For refilling reservoir see page 276.
2Headlamp cleaning system
Auxiliary tank connected to windshield washer 
reservoir. Open filler caps on both reservoirs during 
refilling.
3Coolant level
See “Adding coolant”, page 275.
4Engine oil level
See “Checking engine oil level”, page 273.
5Brake fluid
See “Brake fluid”, page 330.
Opening hood, see page 270.
Ve h i c l e  l i g h t i n g : Check function and cleanliness. For 
replacement of light bulbs, see “Exterior lamps” on 
page 297.
Exterior lamp switch, see page 119.
3
2
4
1
5 
     
        
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243 Contents – Instrument cluster display
Te ch n i c a l
data Instruments 
and controlsOperation DrivingInstrument 
cluster displayPractical hints Car care Index
Instrument cluster displayMalfunction and indicator lamps in 
the instrument cluster  .............244
On-board diagnostic system  .....244
Check engine malfunction 
indicator lamp .............................244
Brake warning lamp  ..................245
Supplemental restraint system 
(SRS) indicator lamp ..................246
Fuel reserve and fuel cap 
placement warning  ....................246
Electronic stability program (ESP) 
— warning lamp  ..........................247
BAS / ESP malfunction indicator 
lamp ..............................................247ABS malfunction 
indicator lamp ............................  248
Seat belt warning lamp ............. 248
Malfunction and indicator lamp in 
the center console  .................... 249
AIRBAG OFF indicator lamp  .... 249
Malfunction and warning 
messages in the multifunction 
display ........................................ 250
DISPLAY DEFECTIVE................  251
BATTERY / ALTERNATOR ........  252
ABS-SYSTEM .............................. 253
BRAKE ASSIST...........................  253
BRAKE LINING WEAR .............. 254
BRAKE FLUID  ............................ 254PARKING BRAKE  .......................255
ENGINE FAN  ...............................255
COOLANT (coolant level)  ..........256
COOLANT TEMP. ........................257
LIGHTING SYSTEM ....................258
LIGHT SENSOR ...........................259
REMOVE KEY  .............................259
STEERING GEAR OIL................. 260
ENGINE OIL LEVEL  ................... 261
WASHER FLUID  .........................262
ELEC. STABIL. PROG. (Electronic 
stability program)  ......................263
TELE AID ..................................... 263 
     
        
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244 Malfunction and indicator lamps
Te ch n i c a l
data Instruments 
and controlsOperation DrivingInstrument 
cluster displayPractical hints Car care Index
Malfunction and indicator lamps
in the instrument cluster
General information:
If a bulb in the instrument cluster fails to light up 
during the bulb self-check when turning the electronic 
key in steering lock to position 2, have it checked and 
replaced if necessary.
On-board diagnostic system
Check engine malfunction indicator lamp
Engine malfunction indicator lamp. If the 
“CHECK ENGINE” malfunction indicator 
lamp comes on when the engine is running, 
it indicates a malfunction of the fuel management 
system, emission control system, systems which impact 
emissions, or the fuel cap is not closed tight (check the 
fuel cap). If the “CHECK ENGINE” lamp is illuminated 
continuously and the vehicle is driving normally, you 
may still drive the vehicle, however, in all cases, we 
recommend that you have the system checked at your 
authorized Mercedes-Benz Center as soon as possible. If the “CHECK ENGINE” lamp comes on continuously 
and / or the vehicle is not driving normally, serious 
damage can occur to the emission system. Please 
contact your authorized Mercedes-Benz Center 
immediately.
The Sequential Multiport Fuel Injection (SFI) control 
module monitors emission control components that 
either provide input signals to or receive output signals 
from the control module. Malfunctions resulting from 
interruptions or failure of any of these components are 
indicated by the “CHECK ENGINE” malfunction 
indicator lamp in the instrument cluster and are 
simultaneously stored in the SFI control module.
If the “CHECK ENGINE” malfunction indicator lamp 
comes on, have the system checked at your authorized 
Mercedes-Benz Center as soon as possible.
With some exceptions, the control module switches off 
the “CHECK ENGINE” malfunction indicator lamp if the 
condition, causing the lamp to come on, no longer exists 
during three consecutive cycles. See also page 246 for 
fuel cap placement warning.
CHECK
ENGINE 
     
        
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247 Malfunction and indicator lamps
Te ch n i c a l
data Instruments 
and controlsOperation DrivingInstrument 
cluster displayPractical hints Car care Index Electronic stability program (ESP) — warning lamp
The yellow ESP warning lamp in the 
speedometer dial comes on with the 
electronic key in steering lock position 2. It 
should go out with engine running.
See page 229 and 230 if the warning lamp lights up or 
flashes when the vehicle is moving.BAS / ESP malfunction indicator lamp
The malfunction indicator lamp for the ESP 
is combined with that of the BAS.
The yellow BAS / ESP malfunction indicator 
lamp in the instrument cluster comes on with the 
electronic key in steering lock position 2. It should go 
out with the engine running.
If the BAS / ESP malfunction indicator lamp remains 
illuminated with the engine running, see page 225 for 
notes on brake assist system (BAS) and page 230 for 
notes on electronic stability program (ESP). 
     
        
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249 Malfunction and indicator lamps
Te ch n i c a l
data Instruments 
and controlsOperation DrivingInstrument 
cluster displayPractical hints Car care Index Malfunction and indicator lamp in the center 
console
AIRBAG OFF indicator lamp
The 7 indicator lamp will light up for approximately 
6 seconds when you turn the electronic key in steering 
lock to position 1 or 2.
The 7 indicator lamp stays lit as long as a 
BabySmart
TM compatible child seat is properly installed 
on the front passenger seat. It indicates that the front 
passenger airbag is switched off.
See page 65 for BabySmart
TM deactivation system.
BabySmart
TM is a trademark of Siemens Automotive Corp.
Wa r n i n g !
The BabySmart
TM airbag deactivation system will 
ONLY work with a special child seat designed to 
operate with it. It will not work with child seats 
which are not BabySmart
TMcompatible.
Never place anything between seat cushion and 
child seat (e.g. pillow), since it reduces the 
effectiveness of the deactivation systems.Follow the manufacturer’s instructions for 
installation of special child seats.When using a BabySmart
TM compatible child seat 
on the front passenger seat, the front passenger 
airbag will not deploy only if the 7 indicator 
lamp remains illuminated.
Please be sure to check the indicator every time 
you use the special system child seat. Should the 
light go out while the restraint is installed, please 
check installation. If the light remains out, do not 
use the BabySmart
TM restraint to transport children 
on the front passenger seat until the systems has 
been repaired.