2001 MERCEDES-BENZ CLK320 climate control

125 Automatic climate control
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data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Air recirculation
This mode can be selected to temporarily reduce the
entry of annoying odors or dust into the vehicle’s
interior.
Outside air is not supplied to the vehicle’s interior.
To select, press O button.
To cancel, press O button again.
The system will automatically switch from recirculated
air to fresh air
•after approx. 5 minutes at outside temperatures
below approx. 40°F (5°C),
•after approx. 30 minutes at outside temperatures
above approx. 40°F (5°C),
•after approx. 5 minutes, if button S is pressed.
If the windows should fog up from the inside, switch
from recirculated air back to fresh air.
At high outside temperatures, the system automatically
engages the recirculated air mode thereby increasing
the cooling capacity performance, switching to partially
fresh air within 30 minutes.Residual engine heat utilization
With the engine switched off, it is possible to continue
heating the interior for a short while.
Air volume and distribution are controlled
automatically.
To select:
Turn electronic key in steering lock to position 1 or 0 or
remove key.
Press T button
This function selection will not activate if the battery
charge level is insufficient.
To c a n c e l :
Press T button.
The system will automatically shut off
•if you turn electronic key in steering lock to
position 2,
•after approx. 30 minutes,
•if the battery voltage drops.

126 Automatic climate control
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cluster displayPractical hints Car care Index
Dust filter
Nearly all dust particles and pollen are filtered out
before outside air enters the passenger compartment
through the air distribution system.
Notes:
Do not obstruct the air flow by placing objects on the air
f low–through exhaust slots below the rear window.
Also keep the air intake grille in front of windshield free
of snow and debris.Important!
This vehicle is equipped with an air conditioner system
that uses R–134a (HFC: hydrof luorocarbon) as a
refrigerant. Repairs should always be performed by a
qualified technician, and refrigerant should be collected
in a recovery system for recycling.

189 Steering lock
Te ch n ica l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Important!
If the electronic key is left in the steering lock position 0
for an extended period of time, it can no longer be
turned in the lock. In this case, remove electronic key
from steering lock and reinsert.
Caution!
To prevent accelerated battery discharge and a possible
dead battery, always remove the electronic key from the
steering lock. Do not leave the electronic key in steering
lock position 0.Notes:
A warning sounds when the driver’s door is opened
while the electronic key is in steering lock position 1
or 0.
With the engine at idle speed, the charging rate of the
alternator (output) is limited.
It is therefore recommended that you turn off
unnecessary electrical consumers while driving in stop-
and-go traffic. This precaution helps to avoid draining of
the battery.
Unnecessary strain on the battery and charging system
may be minimized by turning off the following power
consumers, for example: Heated seats, rear window
defroster. In addition, the automatic climate air volume
control should be set to the lowest position.
The steering lock can only be unlocked with the vehicle
battery properly charged and connected.

291 Cleaning and care of the vehicle
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data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hintsCar careIndex Scratches, corrosive deposits, corrosion or damage due
to negligent or incorrect care cannot always be removed
or repaired with the car-care products recommended
here. In such cases it is best to seek aid at your
authorized Mercedes-Benz Center.
The following topics deal with the cleaning and care of
your vehicle and give important “how-to” information as
well as references to Mercedes-Benz approved car-care
products.
Additional information can be found in the booklet titled
“Vehicle Care Guide”.
Power washer
When using a power washer for cleaning the vehicle
always observe manufacturer’s operating instructions.
Caution!
Never use a round nozzle to power wash tires. The
intense jet of water can result in damage to the tire.
Always replace a damaged tire.
Always keep the jet of water moving across the surface.
Do not aim directly at electrical parts, electrical
connectors, seals, or other rubber parts.Paintwork, painted body components
Mercedes-Benz approved Paint Care should be applied
when water drops on the paint surface do not “bead up”,
normally in 3 to 5 months, depending on climate and
washing detergent used.
Mercedes-Benz approved Paint Cleaner should be
applied if paint surface shows signs of dirt embedding
(i.e. loss of gloss).
Do not apply any of these products or wax if your
vehicle is parked in the sun or if the hood is still hot.
Use the appropriate MB-Touch-Up Stick for quick and
provisional repairs of minor paint damage (i.e. chips
from stones, vehicle doors etc.).
Ta r st a in s
Quickly remove tar stains before they dry and become
more difficult to remove. A tar remover is
recommended.

307 Consumer information
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cluster displayPractical hints Car care Index Consumer information
This has been prepared as required of all manufactures
of passenger cars under Title 49, Code of U.S. Federal
Regulations, Part 575 pursuant to the “National Traffic
and Motor Vehicle Safety Act of 1966”.
Uniform tire quality grading
Quality grades can be found where applicable on the
tire sidewall between tread shoulder and maximum
section width. For example:
All passenger vehicle tires must conform to federal
safety requirements in addition to these grades.Treadwear
The treadwear grade is a comparative rating based on
the wear rate of the tire when tested under controlled
conditions on a specified government test course. For
example, a tire graded 150 would wear one and one-half
(1
1/2) times as well on the government course as a tire
graded 100. The relative performance of tires depends
upon the actual conditions of their use, however, and
may depart significantly from the norm due to
variations in driving habits, service practices and
differences in road characteristics and climate.
Traction
The traction grades, from highest to lowest are AA, A, B,
and C. Those grades represent the tire’s ability to stop
on wet pavement as measured under controlled
conditions on specified government test surfaces of
asphalt and concrete. A tire marked “C” may have poor
traction performance. Tread wear 200 Traction AA Temperature A
Wa r n i n g !
The traction grade assigned to this tire is based on
straightahead braking traction tests, and does not
include acceleration, cornering, hydroplaning, or
peak traction characteristics.

309 Index
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Index
AABS (Antilock brake system) ....................................... 215
Malfunction indicator lamp .....................................229
ABS-SYSTEM - malfunction
and warning messages ............................................234
Adjusting headlamp aim ...............................................278
Adjusting telescoping steering column ........................ 77
Air conditioner refrigerant ...........................................303
Air distribution .............................................................. 124
Air volume ...................................................................... 124
Airbag deactivation system ............................................ 64
Airbag OFF indicator lamp ...........................................230
Airbags .............................................................................. 66
Alarm system ............................................................. 42, 44
Anticorrosion/antifreeze ................... 208, 253, 302, 305
Antiglare night position ................................................. 78
Antilock brake system (ABS) ....................................... 215
Malfunction indicator lamp .....................................229
Antitheft alarm system ................................................... 42
Aquaplaning ...................................................................205
Armrest, rear bench ...................................................... 155Ashtray
Center console, front ................................................ 156
Rear seats ................................................................... 157
Aud io system
Anti-theft system .......................................................129
Button and soft key operation ................................. 130
Cassette mode ............................................................ 135
CD changer .................................................................140
CD mode ..................................................................... 139
Operating and display elements .............................128
Operating safety ........................................................127
Operation .................................................................... 131
Operation – audio and telephone ...........................127
Radio mode ................................................................ 133
Telephone operation .................................................143
Audio systems ...................................................................93
Cassette player ............................................................95
CD player ......................................................................94
Radio .............................................................................93
Automatic central locking ..............................................37
Automatic climate control ............................................120
Air distribution ..........................................................124
Air recirculation ........................................................125
Air volume .................................................................. 124

318 Index
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data Instruments
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cluster displayPractical hints Car careIndex
Sliding/pop-up roof ....................................................... 148
Emergency operation ...............................................284
Express opening ....................................................... 149
Opening and closing .................................................. 32
Synchronizing ........................................................... 149
Snow chains ....................................................................206
SOS-call
See Tele Aid ............................................................... 178
Spare parts service ........................................................296
Spare wheel ........................................................... 255, 259
Special settings
(Automatic climate control) .................................... 123
SRS indicator lamp ........................................................228
SRS malfunction .............................................................. 68
Start lock-out .................................................................... 27
Starting and turning off the engine ............................ 190
STEER. WHEEL ADJUST. - malfunction
and warning messages ............................................240
Steering column, adjustable ........................................... 77
Steering lock ................................................................... 188
Storage compartment
Trunk floor .................................................................255
Storage compartments
Center console ........................................................... 153
Glove box .................................................................... 153Storage compartments, armrest
and cup holder ........................................................... 152
Stowing things in the vehicle ..................................... 246
Sun visors ........................................................................ 151
Supplemental restraint system (SRS) ...........................65
Synchronizing remote control .................................... 283
TTachometer ........................................................................87
Technical data ................................................................ 299
Electrical system ...................................................... 300
Main dimensions ......................................................301
Rims and tires .......................................................... 300
Weights .......................................................................301
Tele Aid ............................................................................ 178
Emergency calls ........................................................179
Information ................................................................ 183
Initiating an emergency call manually .................. 181
Roadside Assistance ................................................. 182
TELE AID - malfunction
and warning messages ............................................ 244
Telephone ..........................................................................96
General notes ............................................................. 163
Incoming call ............................................................. 100