Page 348 of 390
345 Exterior lamps
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hintsCar care Index High mounted stop lamp,
Additional turn signals on the exterior mirror
The high mounted stop lamp (3rd brake lamp) is
equipped with LEDs. The additional turn signals on the
exterior mirrors are equipped with incandescent bulbs.
Have the system checked at an authorized
Mercedes-Benz Center if a malfunction occurs.Standby bulb function
The sto p lamp s, d im med , will act as a re placeme nt lamp ,
if one taillamp stops working.
The left stop lamp acts as a replacement for the rear fog
lamp, if it stops working.
The respective fog lamp, dimmed, will act as a
replacement lamp, if the left or right standing lamp
stops working.
Notes:
The multifunction display will indicate that a bulb has
failed. See malfunction and warning messages on
page 285.
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Page 368 of 390
365 Technical data
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car care Index Te ch n i c a l d a t a
Model C 320 (203.264
1)
Engine11 2
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 228 ft.lb/3000 rpm
(310 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.
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Page 371 of 390

368 Fuels, coolants, lubricants etc. - capacities
Te ch n i c a 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 1.2 US qt (1.1 l) Hypoid gear oil SAE 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+)
Cooling system approx. 6.8 US qt (6.4 l) MB Anticorrosion / antifreeze
Fuel tank
including a reserve of16.4 US gal (62.0 l)
2.1 US gal (8.0 l)Premium unleaded gasoline: Posted Octane 91
(Avg. of 96 RON / 86 MON)
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Page 375 of 390

372 Fuels, coolants, lubricants etc. - capacities
Te ch n i c a 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
ad ditives , car bon d ep osits c an build up esp ecially on t he
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 approximately - 22
°F
(- 30
°C). If you use a solution that is more than 55%
anticorrosion /antifreeze (freeze protection to
approximately - 49
°F (- 45
°C), the engine temperature
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Page 378 of 390

375 Consumer information
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car care Index Tempera t u re
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 corresponds to a level of performance
which all passenger car 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.
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Page 381 of 390

378 Index
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car careIndex
DDashboard ......................................................................... 22
Door control panel ........................................................... 20
Door entry lamps ........................................................... 192
Drive sensibly - Save Fuel ............................................ 253EEasy-entry/exit feature ................................................... 45
Electrical outlet .............................................................. 209
Electronic key ................................................................... 29
Changing batteries ................................................... 346
Electronic main key
Synchronizing remote control ................................ 348
Electronic stability program (ESP) .............................. 270
Emergency call
See Tele Aid ............................................................... 228
Emergency engine shut-down ..................................... 348
Emergency operation of sliding/pop-up roof ............ 349
Emergency tensioning retractor (ETR) ......................... 66
Emergency unlocking in case of accident ................... 39Emergency unlocking the tailgate ................................. 41
Engine oil consumption ................................................ 136
Engine oil level indicator .............................................. 135
Express opening and closing
(power windows) ....................................................... 186
Exterior lamp switch ..................................................... 137
Daytime running lamp mode .................................. 139
Exterior lamps ............................................................... 339
Additional turn signals
on the exterior mirror ........................................ 345
Bulbs for high and low beam .................................. 341
Headlamp assembly ................................................. 340
High mounted stop lamp ......................................... 345
License plate lamps ................................................. 344
Parking and standing lamp ..................................... 341
Replacing bulbs ........................................................ 339
Side marker lamp, front .......................................... 344
Taillamp assemblies ................................................ 342
Turn signal lamp ....................................................... 341
Exterior mirror adjustment ............................................85
Exterior mirror, front passenger side,
parking position ..........................................................86
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