Page 286 of 440
286 OperationEngine compartment
Screw filler cap1 back on filler neck.
More information on engine oil can be
found in the “Technical data” section
(
page 388) and (
page 390).
Transmission fluid level
The transmission fluid level does not need
to be checked. If you notice transmission
fluid loss or gear shifting malfunctions,
have an authorized Mercedes-Benz Center
check the automatic transmission.
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.
!Excess oil must be siphoned or drained
off. It could cause damage to the en-
gine and catalytic converter not cov-
ered by the Mercedes-Benz Limited
Warranty.
Page 388 of 440
388 Technical dataFuels, coolants, lubricants, etc.
Fuels, coolants, lubricants, etc.CapacitiesVehicle components and their respective
lubricants must match. Therefore only use
brands tested and approved by
Mercedes-Benz.Please refer to the Factory Approved Ser-
vice Products pamphlet, or inquire at your
Mercedes-Benz Center.
Model
Capacity
Fuels, coolants, lubricants, etc.
Engine with oil filter
CLK 320
CLK 500
CLK 55 AMG
8.5 US qt (8.0 l)
8.0 US qt (7.5 l)
9.0 US qt (8.5 l)
Approved engine oils
Automatic transmission
CLK 320
CLK 500
CLK 55 AMG
8.0 US qt (7.5 l)
9.3 US qt (8.7 l)
9.3 US qt (8.7 l)
MB Automatic Transmission Oil
Rear axle
CLK 320
CLK 500
CLK 55 AMG
1.28 US qt (1.2 l)
1.5 US qt (1.4 l)
1.5 US qt (1.4 l)
Hypoid gear oil SAE 85 W 90
Power steering
approx. 1.1 US qt (1.0 l)
MB Power Steering Fluid (Pentosin
CHF 11S)
Front wheel hubs
approx. 3.0 oz (85 g) each
High temperature roller bearing grease
Brake system
0.64 US qt (0.6 l)
MB Brake Fluid (DOT 4+)
Page 404 of 440

404 IndexAir conditioning (cooling)
Turning off 181
Turning on 181
Air conditioning refrigerant 390
Air distribution
Adjusting 176
Air pressure see Tire inflation pressure
Air recirculation mode 178
Activating 178
Deactivating 179
Air vents, rear passenger compartment
Adjustable 182
Air volume
Adjusting 177
Airbags 59
BabySmart
TM
airbag deactivation system 397
Children 60
Front 63
Passenger 63
Safety guidelines 62
Side impact 64
Window curtain 64Alarm
Audible 75, 83, 84
Canceling 83, 84
Visual 82
Alarm system
Anti-theft 82
Alignment bolt 360
Alignment bolt (vehicle tool kit) 397
Anticorrosion/antifreeze 393
Antiglare
Automatic 167
Antilock brake system (ABS) 397
Anti-theft alarm system
Arming 82
Canceling alarm 83, 84
Disarming 82
Anti-theft systems 81
Anti-theft alarm system 82
Immobilizer 81
Tow-away alarm 83
Aquaplaning see Hydroplaning
Armrest
Storage spaces 246Ashtray (Center console) 247
Opening 247
Reinstalling 248
Removing 248
Ashtray (Rear seat) 248
Opening 248
Reinstalling 248
Removing 248
At the gas station 278
ATF (automatic transmission fluid) 286
AUDIO menu 134
Selecting radio station 135
Selecting satellite radio* station 135
Audio system 183
Audio and telephone, operation 183
Button and soft key operation 186
Cassette operation 196
CD operation 199
Operating and display elements 184
Operating safety 183
Operation 186
Radio operation 189
Switching off 186
Switching on 186
Telephone operation 203
Page 405 of 440

405 Index
Automatic antiglare
for rear view mirror 167
Automatic central locking
Activating/deactivating
(control system) 149
Automatic climate control 172
Adjusting air distribution 176
Air recirculation mode 178
Defrosting 177
Rear window defroster 171
Setting the temperature 175
Automatic headlamp mode 120
Automatic lighting control
Activating 124
Deactivating 125
Automatic locking when driving 105Automatic transmission 157
Accelerator position 163
Comfort (C) program mode 163, 164
Emergency operation
(Limp Home Mode) 165
Fluid level 286
Gear ranges 159
Gear selector lever position 157, 160
Gear shifting malfunctions 165
Kickdown 163
Manual (M) program mode 164
Manual shift program mode
(CLK 55 AMG) 164
One-touch gearshifting 158
Program mode selector switch 163
Program mode
selector switch CLK 55 AMG 164
Speedshift (CLK 55 AMG) 161
Sport (S) program mode 163, 164
Starting the engine 44
Steering wheel gearshift control
(CLK 55 AMG) 161
Transmission fluid 286
Auxiliary fuse box 374B
BabySmart
TM
Airbag deactivation system 70, 397
Compatible child seats 70, 397
Self-test 71
Backrest
Folding forward 241
Folding rearward 242
Backup lamps 351, 356
Bulbs 351
BAS 77, 397
Messages in display 316
Batteries, SmartKey
Changing 345
Check lamp 87, 92
Checking 88, 93
Batteries, SmartKey with KEYLESS-GO*
Changing 346
Check lamp 87, 92
Checking 88, 93
Battery discharged
Jump starting 366