Page 260 of 418

259 Operation
At the gas station
Windshield washer system and head-
lamp cleaning system
For more information on refilling the wash-
er reservoir, see “Windshield washer sys-
tem and headlamp cleaning system” 
(page 269).
Coolant
For more information,  see “Coolant” 
(page 266) and see “Coolants” 
(page 376).Brake fluid
For more information on brake fluid, see 
“Brake fluid” (
page 375).
Engine oil level
For more information on engine oil, see 
“Engine oil” (
page 261).Vehicle lighting
Check function and cleanliness. For more 
information on replacing light bulbs, see 
“Replacing bulbs” (
page 336).
For more information , see “Exterior lamp 
switch” (
page 119).
Tire inflation pressure
For information on tire inflation pressure, 
see “Checking tire inflation pressure” 
(
page 271).
!If you find that the brake fluid in the 
brake fluid reservoir has fallen to the 
minimum mark or below, have the 
brake system checked for brake pad 
thickness and leaks immediately. 
Notify an authorized Mercedes-Benz 
Center immediately. Do not add brake 
fluid as this will not solve the problem. 
For more information, see “Practical 
hints” (
page 293). 
     
        
        Page 268 of 418

267 Operation
Engine compartment
The coolant expansion tank is located on 
the passenger side of the engine compart-
ment.
1Coolant expansion tank
Using a rag, turn the cap slowly approx-
imately one half turn to the left to re-
lease any excess pressure.
Continue turning the cap to the left and 
remove it.The coolant level is correct if the level
for cold coolant: reaches the black top 
part of the reservoir
for warm coolant: is approximately 
0.6 in (1.5 cm) higher
Add coolant as required.
Replace and tighten cap.
For more information on coolant, see 
“Coolants” (
page 376). 
Warning!
G
In order to avoid any possibly serious burns:
Use extreme caution when opening the 
hood if there are any signs of steam or 
coolant leaking from the cooling system, 
or if the coolant temperature gauge indi-
cates that the coolant is overheated.
Do not remove pressure cap on coolant 
reservoir if engine temperature is above 
158°F (70°C). Allow engine to cool 
down before removing cap. The coolant 
reservoir contains hot fluid and is under 
pressure.
Using a rag, slowly open the cap approx-
imately ½ turn to relieve excess pres-
sure. If opened immediately, scalding 
hot fluid and steam will be blown out un-
der pressure.
Do not spill antifreeze on hot engine 
parts. Antifreeze contains ethylene gly-
col which may burn if it comes into con-
tact with hot engine parts.
!CL 600: 
Only open the cap on coolant expan-
sion tank1. Never open the cap be-
tween the charge-air coolers. 
Otherwise, the engine could be dam-
aged. 
     
        
        Page 380 of 418

379 Technical data
Fuels, coolants, lubricants, etc.
Windshield and headlamp washer system
Both the windshield and headlamp washer 
systems are supplied from the windshield 
washer fluid reservoir.
The windshield and headlamp washer fluid 
reservoir has a capacity of approx. 
7.1 US qt. (6.7 l).
Refill the reservoir with MB Windshield 
Washer Concentrate and water (or con-
centrate and commercially available 
premixed windshield washer solvent / 
antifreeze, depending on ambient tem-
peratures).Windshield and headlamp washer fluid 
mixing ratio
For temperatures above freezing point, use 
MB Windshield Washer Concentrate “S” 
and water:
1 part “S” to 100 parts water
[40 ml “S” to 1 gallon (4 liters) water].
For temperatures below freezing point, use 
MB Windshield Washer Concentrate “S” 
and commercially available premixed 
windshield washer solvent / antifreeze:
1 part “S” to 100 parts solvent
[40 ml “S” to 1 gallon (4 liters) solvent].
Warning
G
Washer solvent /antifreeze is highly flamma-
ble. Do not spill washer solvent /antifreeze 
on hot engine parts, because it may ignite 
and burn. You could be seriously burned.