Page 297 of 498

296 OperationEngine compartment
If engine is at operating temperature, 
wait 5 minutes before repeating check 
procedure.
If engine is not at operating tempera-
ture yet, wait 30 minutes before 
repeating check procedure.
If you see the message:
Engine oil level
Not when engine on
Turn off the engine.
If the engine is at normal operating 
temperature, wait 5 minutes before 
checking oil.
If the engine is not yet at normal 
operating temperature, you must wait 
30 minutes before checking oil.If there is excess engine oil with the engine 
at normal operating temperature, the 
following message will appear:
Engine oil level
Reduce oil level
Have excess oil siphoned or drained 
off. Contact an authorized 
Mercedes-Benz Center.
For more information on messages in the 
multifunction display concerning engine 
oil, see the “Practical hints” section 
(
page 382). Adding engine oil!Excess oil must be siphoned or drained 
off. It could cause damage to the 
engine and catalytic converter not 
covered by the Mercedes-Benz Limited 
Warranty.
!Only use approved engine oils and oil 
filters required for vehicles with Main-
tenance System (U.S. vehicles) or 
FSS PLUS (Canada vehicles). For a list-
ing of approved engine oils and oil fil-
ters, refer to the Factory Approved 
Service Products pamphlet in your 
vehicle literature portfolio, or contact 
an authorized Mercedes-Benz Center.
Using engine oils and oil filters of spec-
ification other than those expressly 
required for the Maintenance System 
(U.S. vehicles) or FSS PLUS (Canada 
vehicles), or changing of oil and oil filter 
at change intervals longer than those 
called for by the Maintenance System 
(U.S. vehicles) or FSS PLUS (Canada 
vehicles) will result in engine damage 
not covered by the Mercedes-Benz 
Limited Warranty. 
     
        
        Page 462 of 498
461 Technical data
Fuels, coolants, lubricants etc.
Fuels, coolants, lubricants etc.
CapacitiesVehicle components and their respective 
lubricants must match. Therefore only use 
products tested and approved by 
Mercedes-Benz.Please refer to the Factory Approved Ser-
vice Products Pamphlet, or inquire at your 
authorized Mercedes-Benz Center.
Model
Capacity
Fuels, coolants, lubricants etc.
Engine with oil filter
CLS 500
8.0 US qt (7.5 l)
Approved engine oils
CLS 55 AMG
9.0 US qt (8.5 l)
Automatic transmission
CLS 500
8.5 US qt (8.0 l)
MB Automatic Transmission Fluid
CLS 55 AMG
8.67 US qt (8.2 l)
Rear axle
1.37 US qt (1.3 l)
Hypoid gear oil SAE 85 W 90 
     
        
        Page 465 of 498

464 Technical dataFuels, coolants, lubricants etc.Engine oils
Engine oils are specifically tested for their 
suitability in our engines and durability for 
our service intervals. Therefore, only use 
approved engine oils and oil filters re-
quired for vehicles with Maintenance Sys-
tem (U.S. vehicles) or FSS PLUS (Canada 
vehicles). For a listing of approved engine 
oils and oil filters, refer to the Factory Ap-
proved Service Products pamphlet, or con-
tact an authorized Mercedes-Benz Center.
Engine oil additives
Do not blend oil additives with engine oil. 
They may damage the engine.
Damage or malfunctions resulting from 
blending oil additives are not covered by 
the Mercedes-Benz Limited Warranty.Air conditioning refrigerant
R-134a (HFC) refrigerant and special PAG 
lubricating oil are used in the air condition-
ing system.
Never use R-12 (CFC) or mineral-based lu-
bricating oil. Otherwise damage to the 
system will occur.
Brake fluid
During vehicle operation, the boiling point 
of the brake fluid is continuously reduced 
through the absorption of moisture from 
the atmosphere.
Only brake fluid approved by 
Mercedes-Benz is recommended. Your 
authorized Mercedes-Benz Center will pro-
vide you with additional information.
!Using engine oils and oil filters of spec-
ification other than those expressly re-
quired for the Maintenance System 
(U.S. vehicles) or FSS PLUS (Canada 
vehicles), or changing of oil and oil filter 
at change intervals longer than those 
called for by the Maintenance System 
(U.S. vehicles) or FSS PLUS (Canada 
vehicles) will result in engine damage 
not covered by the Mercedes-Benz 
Limited Warranty.
Please follow Maintenance System 
(U.S. vehicles) or FSS PLUS (Canada 
vehicles) recommendations for sched-
uled oil changes. Failure to do so could 
result in engine damage not covered by 
the Mercedes-Benz Limited Warranty.
Warning!
G
Under extremely strenuous operating condi-
tions, this moisture content can lead to the 
formation of bubbles in the system, thus re-
ducing the system’s efficiency.
Therefore, the brake fluid must be replaced 
regularly. Refer to your vehicle’s Mainte-
nance Booklet for replacement interval. 
     
        
        Page 485 of 498

484 IndexEmission control 289
Emission control information label 446
Emission control system warranties 10
Emission control vacuum line routing 
diagram label 446
Engine 448
Belt layout 447
Block heater* (Canada only) 337
Break-in recommendations 278
Cleaning 344
Compartment 293
Malfunction indicator lamp 355
Maximum engine speed 448
Number 473
Starting 49
Technical data 448
Turning off with the key 60
Engine compartment
Hood 293Engine oil
Adding 296
Additives 464
Changing 464
Checking level 294
Consumption 294
Filler neck 297
Messages in display 295, 382, 383
Recommended engine oils rand 
oil filters 464
Viscosity 473
Engine oil level 295
ESP
®
86, 473
Synchronizing 368
Warning lamp 353
ETD 73, 473
Safety guidelines 68
Exterior lamp switch 134
Exterior rear view mirrors 44
Parking position 169, 192F
First aid kit 398
Flat tire 419
Collapsible tire 426, 427
Jacking up the vehicle 425
Lowering the vehicle 429
Mounting the spare wheel 423, 426
Preparing the vehicle 419
Spare wheel 423
TIREFIT kit* 419
Flexible Service System 
(Canada vehicles) 339
Flexible Service System (FSS) 474
Floormats 260
Fog lamp, rear 138
Fog lamps
Messages in display 387, 388, 389, 
390
Fog lamps, front
Switching on 137
Front lamps 412
Replacing bulbs 414
Switching on 134