2005 MERCEDES-BENZ SLR CLASS coolant reservoir

241 Operation
At the gas station

Replace fuel cap by turning it
clockwise.
You will hear when fuel cap is
tightened.

Close the fuel filler flap until you hear
the latch close shut.
Check regularly and before a long trip
1Coolant
2Engine oil
3Brake fluidCoolant
For normal replenishing, use water (pota-
ble water quality). For more information,
see “Coolant” (
page 249) and see “Fu-
els, coolants, lubricants, etc.”
(
page 375).
Engine oil level
For more information on engine oil level,
see “Engine oil” (
page 246).
Brake fluid
iMore information on gasoline can be
found in the Factory Approved Service
Products pamphlet.
Leaving the engine running and the fuel
cap open can cause theú malfunc-
tion indicator lamp (USA only) or
the± malfunction indicator lamp
(Canada only) to illuminate.
For more information, see “Practical
hints” (
page 299).
iOpening the hood, see (
page 243).
!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 298).

249 Operation
Engine compartment
Coolant
The engine coolant is a mixture of water
and anticorrosion/antifreeze. To check
the coolant level, the vehicle must be
parked on level ground and the engine
must be cool.
The coolant expansion tank is located on
the passenger side of the engine compart-
ment.
1Expansion tank

Using a rag, turn cap slowly approxi-
mately one half turn to the left to
release 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 upper
mark on the bracing rib of the ex-
pansion tank (arrow)


for warm coolant: is approximately
0.4 in (1 cm) higher

Add coolant as required.

Replace and tighten cap.
For more information, see “Coolants”
(
page 380).
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 coolant temperature is
above 194°F (90°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
approximately
1/2 turn to relieve excess
pressure. If opened immediately, scald-
ing hot fluid and steam will be blown out
under pressure.


Do not spill antifreeze on hot engine
parts. Antifreeze contains ethylene
glycol which may burn if it comes into
contact with hot engine parts.

300 Practical hintsWhat to do if ...Problem
Possible cause
Suggested solution
D
The red coolant warning lamp
comes on when the engine is
running.
There is insufficient coolant in the reservoir.

Immediately add coolant to prevent
engine from overheating
(page 249).
If this warning lamp comes on frequently,
there is a leak in the cooling system.

Have the cooling system checked by
an authorized Mercedes-Benz Center.
If the coolant level is correct, the electric
radiator fan may be broken.

If the coolant temperature is below
248°F (120°C), you can continue
driving to the nearest authorized
Mercedes-Benz Center.

Avoid high engine loads (e.g. driving
uphill) and stop-and-go driving.
D
The red coolant warning lamp
comes on while driving and you
hear a warning sound.
The coolant temperature has exceeded
248°F (120°C).

Stop as soon as possible and allow
the engine and coolant to cool down.
Warning!
G
Driving when your engine is badly overheat-
ed can cause some fluids which may have
leaked into the engine compartment to
catch fire. You could be seriously burned.
Steam from an overheated engine can cause
serious burns and can occur just by opening
the engine hood. Stay away from the engine
if you see or hear steam coming from it.
Turn off the engine, get out of the vehicle
and do not stand near the vehicle until the
engine has cooled down.

382 Technical dataFuels, 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 approximately
7.4 US qt (7 l).
Refill the reservoir with MB Windshield
Washer Concentrate and water (or con-
centrate and commercially available
premixed windshield washer sol-
vent/antifreeze, depending on ambient
temperatures).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
(1.34 floz [40 ml] “S” to 1 gallon [4.0 l] wa-
ter).
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
(1.34 floz [40 ml “S” to 1 gallon [4.0 l] sol-
vent).
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.

394 IndexCenter air vents 31
Center console
Lower part 32
Upper part 31
Center storage compartment 201
Centigrade
Setting temperature units 129
Central locking
Automatic 103
Central locking switch 31, 103
Switching on/off (control
system) 135
Unlocking from inside 103
Changing
Bulbs 346
CDs 156
Charging the batteries (vehicle) 355
Battery charger 356Checking
Brake fluid 241
Coolant level 241, 249
Engine oil level 241
Tire inflation pressure 242
Vehicle lighting 242
Washer reservoir level 242
Child safety
Airbags 64
Automatic child seat recognition 75
Infant and child restraint systems 62
Cigarette lighter 202
Cleaning
Headlamps 178, 293
Vehicle 290
Windows 292
Windshield 53
Wiper blades 291Cleaning tires 255
Clearing
Service display 286
Clock 128
Closing
Hood 246
Trunk lid 102
Windows 193, 194
Windows with SmartKey 195
Cockpit 26, 386
Cold tire inflation pressure 278
Combination switch 27, 51, 109
High beam flasher 51
Windshield wipers 52
Comfort
Shift program mode 173
Compact guide 341
Control and operation of radio
transmitters 237