2001 MERCEDES-BENZ E-Class cruise control

255 Driving systems
Te ch n ica l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care IndexNotes:
If the engine does not brake the vehicle sufficiently
while driving on a downgrade, the speed you set on the
cruise control may be exceeded. In this case the
automatic transmission shifts down (max. to 3rd gear)
to maintain the set cruise control speed by using the
engine’s braking power.
As soon as the grade eases, the automatic transmission
shifts up again dependent on the selector lever position.
Nevertheless, in some cases you may have to step on the
brake pedal to slow down. In this case the cruise control
is switched off.
Use the lever to resume the previously set speed.
The “CRUISE CONTROL - - -” message is displayed on
the multifunction display when any attempt is made to
store speeds below 25 mph (40 km / h) or when an
attempt is made to recall a speed when no speed has
been stored – the cruise control remains switched off.
See malfunction and warning messages on page 303 if
the cruise control has a malfunction.
Wa r n i n g !
Only use the cruise control if the traffic and
weather conditions make it advisable to travel at a
steady speed.• The use of cruise control can be dangerous on
winding roads or in heavy traffic because
conditions do not allow safe driving at a steady
speed.
• The use of cruise control can be dangerous on
slippery roads. Rapid changes in tire adhesion
can result in wheel spin and loss of control.The “Resume” function should only be operated if
the driver is fully aware of the previously set speed
and wishes to resume this particular preset speed.

256 Driving systems
Te ch n ica l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Distronic (DTR)
(optional)
When activated the Distronic system increases driving
convenience, for example over long distances, as it
automatically maintains a speed set by the driver by
actively regulating the throttle setting. It also maintains
within certain limitations a preset distance to a vehicle
ahead.
With Distronic switched off, the multifunction display
continues to show the distance to the vehicle ahead, if
so selected, see page 269.
The distance notification function can be activated
separately, see page 267.
In Distronic mode, if the distance sensor detects a
slower moving vehicle directly ahead, your vehicle
speed will be reduced to the extent permitted by
reduced throttle and up to 20% of vehicle braking power,
so that you follow that vehicle at a preset distance, see
page 268.
Maximum range of detection is approximately 500 ft.
(150 m).Any given speed between 25 mph (Canada: 30 km/h)
and 110 mph (Canada: 180 km/h) can be maintained
with the Distronic by operating the control lever on the
steering column.
Wa r n i n g !
Distronic is a convenience system, its speed
adjustment reduction capability is intended to
make cruise control more effective and usable
when traffic speeds vary. It is not, however,
intended to nor does it replace the need for extreme
care. The responsibility for the vehicle speed and
the distance to the vehicle ahead, including most
importantly brake operation to assure safe stopping
distance, rests always with the driver.Wa r n i n g !
Distronic requires familiarity with its operational
characteristics. We strongly recommend that you
review the following information carefully before
operating the system.

295 Contents - Instrument cluster display
Te ch n ica l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car care Index
Instrument cluster displayMalfunction and indicator
lamps in the
instrument cluster ....................296
On-board diagnostic system .....296
Check engine malfunction
indicator lamp .............................296
Brake warning lamp ..................298
Supplemental restraint
system (SRS)
indicator lamp .............................299
Fuel reserve warning .................299
ABS malfunction
indicator lamp .............................300
Electronic stability
program (ESP) —
warning lamp ..............................301
Distronic (DTR) –
warning lamp ..............................301
Seat belt nonusage
warning lamp ..............................302Malfunction and
indicator lamp in the
center console ........................... 302
AIRBAG OFF indicator lamp .... 302
Malfunction and
warning messages in the
multifunction display .............. 303
DISPLAY DEFECTIVE ................ 304
BATTERY/ALTERNATOR .......... 305
ENTRANCE POSITION .............. 306
BRAKE ASSIST ........................... 306
BRAKE LINING WEAR .............. 307
BRAKE FLUID ............................ 307
PARKING BRAKE ....................... 308
TRUNK OPEN ............................. 308
ELEC. STABIL. PROG.
(Electronic stability
program) ..................................... 309
COOLANT (coolant level) .......... 310
COOLANT
(coolant temperature) ................ 311LIGHTING SYSTEM .................... 312
LIGHT SENSOR ........................... 314
ACTIV E BO DY CO NTROL
(ABC) ............................................ 314
TIRE PRESSURE ......................... 316
ENGINE OIL LEVEL ................... 318
CRUISE CONTROL ..................... 319
KEY ............................................... 319
DOOR ...........................................320
HOOD ...........................................320
TELE AID .....................................321
OIL TEMP.
(engine oil temperature) ...........321
CHIP-CARD (KEYLESS-GO) ......322
SELECTOR LEVER ......................323
TELEPHONE – FUNCTION .......323
WASHER FLUID .........................324
AIR SPRING (AirMatic) .............325
DISTRONIC (DTR) ......................326

304 Malfunction and warning messages
Te ch n ica l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car care Index
DISPLAY DEFECTIVE (engine control unit)
* C = Category, see page 303This message is displayed to indicate that the
information being relayed by the engine control unit is
no longer complete. The display for coolant temperature
gauge, tachometer, or the cruise control may have failed.DISPLAY DEFECTIVE (several systems)
* C = Category, see page 303The displays for several systems have failed. Some
systems themselves may also have failed.
Line 1Line 2C*
DISPLAY DEFECTIVE VISIT WORKSHOP! 2
Line 1Line 2C*
DISPLAY DEFECTIVE VISIT WORKSHOP! 2

319 Malfunction and warning messages
Te ch n ica l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car care Index CRUISE CONTROL
* C = Category, see page 303.
1 Cruise control is malfunctioning.
KEY* C = Category, see page 303.
1 Key needs possibly to be replaced. Line 1Line 2C*
CRUISE CONTROL VISIT WORKSHOP!
1
2
Line 1Line 2C*
REPLACE KEY
1
VISIT WORKSHOP! 2
AUTOM. LIGHT ON REMOVE KEY! 1
P54.30-2245-21

404 Index
Te ch n ica l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car careIndex
Electronic reserve key ................................................ 30
KEYLESS-GO-card ....................................................... 31
Locking and unlocking .............................................. 36
Locking and unlocking
with KEYLESS-GO-card ......................................... 40
Mechanical keys ................................................... 30, 47
Remote control ..................................................... 28, 34
Simultaneous use of
electronic main key
and KEYLESS-GO-card .......................................... 44
Summer opening/convenience feature ................... 45
Changing batteries in the
KEYLESS-GO-card .....................................................366
Changing wheels ...........................................................343
CHECK ENGINE
malfunction indicator lamp .....................................296
Check regulary and before a long trip .......................293
Checking engine oil level
Via engine oil level indicator .................................. 154
Via oil dipstick ...........................................................334
Child restraint ...........................................84, 91, 102, 104
CHIP-CARD (KEYLESS-GO) -
malfunction and warning messages ......................322
Cleaning and care of the vehicle ................................. 374
COMAND, radio and telephone ................................... 212
Combination switch ...................................................... 160Consumer information ................................................. 400
Control and operation
of radio transmitters ................................................. 212
COOLANT (coolant level) -
malfunction and warning messages ...................... 310
COOLANT (coolant temperature) -
malfunction and warning messages ...................... 311
Coolant level
Adding ........................................................................ 336
Checking .................................................................... 336
Coolant temperature gauge .......................................... 117
Coolants .......................................................................... 398
Anticorrosion/antifreeze quantity ........................ 399
Courtesy lighting ........................................................... 189
Cruise control ................................................................ 253
CRUISE CONTROL -
malfunction and warning messages ...................... 319
Cup holder
In front seat armrest ................................................. 199
In rear seat armrest ................................................. 200
DDashboard ......................................................................... 22
Daytime running lamp .................................................. 158

409 Index
Te ch n ica l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car careIndex Standing lamps ........................................ 156, 359, 360
Stop lamps .................................................................. 361
Taillamps .......................................... 156, 312, 360, 377
Turn signal lamps ................................... 358, 360, 361
Level control system
Vehicles with Active Body Control
(ABC) ......................................................................280
Vehicles with Airmatic system ...............................279
LIGHT SENSOR -
malfunction and warning messages ...................... 314
Lighter .............................................................................203
LIGHTING SYSTEM -
malfunction and warning messages ...................... 312
Limp home mode
(Automatic transmission) ........................................ 241
Locking and unlocking ............................................ 36, 40
Lumbar support ............................................................... 73
MMaintenance ................................................................... 213
Malfunction and indicator lamps
In the center console ................................................302
In the instrument cluster .........................................296
Malfunction and warning message memory ............. 136
Malfunction and warning messagesACTIVE BODY CONTROL (ABC) ............................. 314
AIR SPRING (AirMatic) ........................................... 325
BATTERY/ALTERNATOR ......................................... 305
BRAKE ASSIST ......................................................... 306
BRAKE FLUID ........................................................... 307
BRAKE LINING WEAR ............................................ 307
CHIP-CARD (KEYLESS-GO) .................................... 322
COOLANT (coolant level) ......................................... 310
COOLANT (coolant temperature) ........................... 311
CRUISE CONTROL .................................................... 319
DISPLAY DEFECTIVE
(engine control unit) ........................................... 304
DISPLAY DEFECTIVE
(several systems) ................................................. 304
DISTRONIC (DTR) .................................................... 326
DOOR .......................................................................... 320
ELEC. STABIL. PROG. .............................................. 309
ENGINE OIL LEVEL .................................................. 318
ENTRANCE POSITION ............................................ 306
HOOD ......................................................................... 320
KEY .............................................................................. 319
LIGHT SENSOR .......................................................... 314
LIGHTING SYSTEM ................................................... 312
OIL TEMP. (engine oil temperature) ......................321
PARKING BRAKE ..................................................... 308
SELECTOR LEVER .................................................... 323