
267 Battery
Te ch n ica l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hintsCar care Index Therefore, we strongly recommend that you have the
battery charge checked frequently, and corrected if
necessary, especially if you use the vehicle less than
approximately 200 miles (300 km) per month,
mostly for short distance trips, or if it is not used for
long periods of time.
Only charge a battery with a battery charger after the
battery has been disconnected from the vehicle’s
electrical circuit.
Always disconnect the battery negative lead first and
connect last.
When removing and connecting the battery, always
make sure that all electrical consumers are off and the
electronic key is in steering lock position 0. The battery
and its filler caps must always be securely installed
when the vehicle is in operation. During removal and
installation always protect the disconnected battery
positive (+) terminal with the cover attached to the
battery.
While the engine is running the battery terminal clamps
must not be loosened or detached, otherwise the
generator and other electronic components would be
damaged.Note:
After reconnecting the battery also set the clock (see
page 106), resynchronize the front seats (see page 49),
front seat head restraints (see page 49), the express
feature of the power windows (see page 147), the
sliding/pop-up roof (see page 149)and the electronic
stability program (ESP) (see page 218).
Battery recycling
Batteries contain material that can harm the
environment with improper disposal.
Large 12 Volt storage batteries contain lead.
Recycling of batteries is the preferred method of
disposal.
Many states require sellers of batteries to accept old
batteries for recycling.
ProCarManuals.com

271 Towing
Te ch n ica l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hintsCar care Index We recommend that the vehicle be transported using
flat bed equipment. This method is preferable to other
types of towing.
The vehicle may be towed with all wheels on the ground
and the selector lever in position “N” for distances up to
30 miles (50 km) and at a speed not to exceed 30 mph
(50 km/h). The electronic key must be in steering lock
position 2.
To be certain to avoid a possibility of damage to the
transmission, however, we recommend the drive shaft
be disconnected at the rear axle drive f lange for any
towing beyond a short tow to a nearby garage.
Do not tow with sling-type equipment. Towing with
sling-type equipment over bumpy roads will damage
radiator and supports.
Use wheel lift, dolly, or flat bed equipment, with
electronic key in steering lock turned to position 0.Note:
To signal turns while being towed with hazard warning
flasher in use, turn electronic key in steering lock to
position 2 and activate combination switch for left or
right turn signal in usual manner – only the selected
turn signal will operate.
Upon canceling the turn signal, the hazard warning
flasher will operate again.
Caution!
If the vehicle is towed with the front axle raised, the
engine must be shut off (electronic key in steering lock
position 0 or 1). Otherwise, the ESP will immediately be
engaged and will apply the rear wheel brakes. Switch off
the tow-away alarm (see page 44) as well as the ESP (see
page 219).
Wa r n i n g !
With the engine not running, there is no power
assistance for the braking and steering systems. In
this case, it is important to keep in mind that a
considerably higher degree of effort is necessary to
brake and steer the vehicle.
ProCarManuals.com

299 Technical data
Te ch n ica l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car care Index Te ch n ica l d a t a
Model CLK 320 (208.365)
1
Engine112
Mode of operation 4-stroke engine, gasoline injection
No. of cylinders 6
Bore 3.54 in (89.90 mm)
Stroke 3.30 in (84.00 mm)
Total piston displacement 195.2 cu.in. (3199 cm
3)
Compression ratio 10:1
Output acc. to SAE J 1349 215 hp/5700 rpm
(160 kW/5700 rpm)
Maximum torque acc. to SAE J 1349 232 ft.lb/3000 rpm
(315 Nm/3000 rpm)
Maximum engine speed 6000 rpm
Firing order 1-4-3-6-2-5
Poly-V-belt 2390 mm
1 The quoted data apply only to the standard vehicle. See an authorized Mercedes-Benz Center for the corresponding data of all special bodies
and special equipment.
ProCarManuals.com

302 Fuels, coolants, lubricants etc. - capacities
Te ch n ica l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car care Index
Fuels, coolants, lubricants etc. – capacities
Vehicle components and their respective lubricants must match. Therefore use only brands tested and recommended
by us. Please refer to the Factory Approved Service Products pamphlet, or inquire at your Mercedes-Benz Center.
Capacity Fuels, coolants, lubricants etc.
Engine with oil filter 8.5 US qt (8.0 l) Recommended engine oils
Automatic transmission 8.5 US qt (8.0 l) Automatic transmission fluid
Rear axle 1.4 US qt (1.3 l) Hypoid gear oil SAE 90, 85 W 90
Power steering approx. 1.1 US qt (1.0 l) MB Power steering fluid
Front wheel hubs approx. 2.1 oz (60 g) each High temperature roller bearing grease
Brake system approx. 0.5 US qt (0.5 l) MB Brake fluid (DOT 4)
Windshield/headlamp
washer systemapprox. 7.4 US qt (7.0 l) MB Windshield washer concentrate “S” 1
Cooling system approx. 9.5 US qt (9.0 l) MB Anticorrosion/antifreeze
Fuel tank including
a reserve ofapprox. 16.4 US gal (62.0 l)
approx. 2.1 US gal (8.0 l)Premium unleaded gasoline:
Posted Octane 91 (Avg. of 96 RON/86 MON)
Air conditioner system R-134a refrigerant and special PAC lubricant (Never R-12)1 Use MB Windshield Washer Concentrate “S” and water for temperatures above freezing or MB Windshield Washer Concentrate “S” and
commercially available premixed windshield washer solvent/antifreeze for temperatures below freezing. Follow suggested mixing ratios, see
Windshield/headlamp washer system on page 254.
ProCarManuals.com

305 Fuels, coolants, lubricants etc.
Te ch n ica l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car care Index Gasoline additives
A major concern among engine manufacturers is carbon
build up caused by gasoline. Mercedes-Benz
recommends the use of only quality gasoline containing
additives that prevent the build up of carbon deposits.
After an extended period of using fuels without such
additives, carbon deposits can build up especially on the
intake valves and in the combustion area, leading to
engine performance problems such as:
•warm-up hesitation,
•unstable idle,
•knocking/pinging,
•misfire,
•power loss.
Do not blend other specific fuel additives with fuel.
They only result in unnecessary cost, and may be
harmful to the engine operation.
Damage or malfunctions resulting from poor fuel
quality or from blending specific fuel additives are not
covered by the Mercedes-Benz Limited Warranty.Coolants
The engine coolant is a mixture of water and
anticorrosion/antifreeze, which provides:
•corrosion protection,
•freeze protection,
•boiling protection (by increasing the boiling point).
The cooling system was filled at the factory with a
coolant providing freeze protection to approximately
-22°F (-30°C) and corrosion protection.
If the antifreeze mixture is effective to -22°F (-30°C), the
boiling point of the coolant in the pressurized cooling
system is reached at approximately 266°F (130°C).
The coolant solution must be used year round to provide
the necessary corrosion protection and increase in the
boil-over protection. You should have it replaced every
3years.
To provide the important corrosion protection, the
solution must be at least 45% anticorrosion/antifreeze
(equals a freeze protection to approx. - 22°F [-30°C]). If
you use a solution that is more than 55% anticorrosion/
antifreeze (freeze protection to approx. - 49°F [-45°C]),
ProCarManuals.com

308 Consumer information
Te ch n ica l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car care Index
Temp era tur e
The temperature grades are A (the highest), B, and C,
representing the tire’s resistance to the generation of
heat and its ability to dissipate heat when tested under
controlled conditions on a specified indoor laboratory
test wheel. Sustained high temperature can cause the
material of the tire to degenerate and reduce tire life,
and excessive temperature can lead to sudden tire
failure. The grade C corresponds to a level of
performance which all passenger vehicle tires must
meet under the Federal Motor Vehicle Safety Standard
No. 109. Grades “B” and “A” represent higher levels of
performance on the laboratory test wheel than the
minimum required by law.
Wa r n i n g !
The temperature grade for this tire is established
for a tire that is properly inflated and not
overloaded. Excessive speed, underinflation, or
excessive loading, either separately or in
combination, can cause excessive heat build up
and possible tire failure.
ProCarManuals.com

312 Index
Te ch n ica l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car careIndex
DDaytime running lamps .................................................115
Deep water
Driving instructions .................................................208
DISPLAY DEFECTIVE (engine control unit) -
malfunction and warning messages ......................232
DISPLAY DEFECTIVE (several systems) -
malfunction and warning messages ......................232
Display illumination ........................................................ 85
Doors .................................................................................. 34
Drinking and driving .................................................... 201
Drive sensibly - save fuel .............................................. 201
Driving instructions ...................................................... 201
Driving off .......................................................................203EELEC. STABIL. PROGR. - malfunction
and warning messages ............................................242
Electronic main key ......................................................... 25
Changing batteries ................................................... 281
Synchronizing remote control ................................283Electronic stability program (ESP)
Control switch ........................................................... 219
Malfunction and warning messages ..................... 242
Malfunction indicator lamp .................................... 229
Synchronizing ........................................................... 218
Warning lamp ........................................................... 229
Emergency call
See Tele Aid ...............................................................178
Emergency tensioning retractor (ETR) .........................65
Emergency trunk lid release button ............................. 41
Emergency unlocking in case of accident ...................37
Emission control ............................................................177
Emission control label .................................................. 298
Engine compartment .................................................... 249
ENGINE FAN - malfunction
and warning messages ............................................ 236
Engine malfunction
CHECK ENGINE
malfunction indicator lamp ............................... 226
Engine oil additives ...................................................... 303
Engine oil consumption ................................................ 113
Engine oil level
Checking .............................................................112, 251
Warning ......................................................................241
ProCarManuals.com

313 Index
Te ch n ica l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car careIndex ENGINE OIL LEVEL - malfunction
and warning messages ............................................ 241
Engine oil level indicator ...............................................112
ENGINE OIL LEVEL NOT WHEN ENGINE ON
(measuring) - multifunction indicator ....................113
Engine oils ......................................................................303
Capacities ...................................................................302
Enlarged cargo area ....................................................... 159
ESP (Electronic stability program) .... 206, 208, 217, 271
Control switch ........................................................... 219
Malfunction and warning messages ......................242
Malfunction indicator lamp .....................................229
Synchronizing ........................................................... 218
Warning lamp ............................................................229
Exterior lamp malfunction
and warning message ..............................................239
Exterior lamp switch ......................................................114
Exterior lamps ................................................................273
Adjusting headlamp aim ..........................................278
Fog lamps ....................................................................114
Headlamps ..................... 114, 239, 240, 274, 278, 292
Low and high beam .......................................... 117, 275Parking lamps ................................................... 114, 275
Replacing bulbs ........................................................ 273
Side marker lamp, front .......................................... 277
Standing lamps ................................................. 114, 275
Taillamp assemblies ................................................. 276
Turn signal lamp ............................................... 117, 275
FFirst aid kit ..................................................................... 246
Flexible service system (FSS) ...................................... 109
Fuel
Gasoline additives .................................................... 305
Premium unleaded gasoline ...................217, 302, 304
Fuel cap placement warning ....................................... 228
Fuel filler flap
Manual release ......................................................... 285
Fuel requirements ........................................................ 304
Fuel reserve warning .................................................... 228
Fuels, coolants, lubricants etc. - capacities .............. 302
Fuses, electrical ............................................................. 247
ProCarManuals.com