2009 MERCEDES-BENZ SLR CLASS engine

Maintenance Booklet12Emission System MaintenanceEmission Control System Caution -
Gasoline Engines
Your Mercedes-Benz SLR vehicle is
equipped with both a three-way catalyst
and a closed loop oxygen sensor system
to comply with current exhaust emission
regulations. Keep your vehicle in proper
operating condition by following our rec-
ommended maintenance instructions as
outlined.
The following has to be adhered to:
a) In all gasoline engine models, use
only premium unleaded gasoline
with an anti-knock index of at least
91 (as displayed on the pump) un-
less otherwise specified. Damage to
the engine could occur if premium un-
leaded fuel is not used. Refer to the
Operator’s Manual for special precau-
tions.
b) Leaded gasoline should not be used
under any circumstances. Damage
to the emission control components
will result.
c) The specified engine maintenance
jobs have to be performed com-
pletely and at the required inter-
vals. Correct ignition timing and
properly functioning spark plugs for in-
stance are important for the service
life of the catalysts. Failure to properly
perform the specified maintenance
jobs may adversely affect the emis-
sion control system on the vehicle and
reduce its service life.

13 Maintenance Booklet
Emission System Maintenance
d) The operation of the emission con-
trol system must not be altered in
any way. Alterations are not permissi-
ble by law. In addition, alterations may
result in damage to the catalysts, in-
creased fuel consumption, and im-
paired engine running conditions.

e) Irregular engine running conditions
should be corrected immediately by
an authorized Mercedes-Benz Cent-
er. Such irregular running conditions
can influence the proper function of the
emission control system.
If the “CHECK ENGINE” indicator lamp in
the instrument cluster illuminates when
the engine is running, it indicates a possi-
ble malfunction of the engine manage-
ment system or emission control system.
We recommend that you have the mal-
function checked as soon as possible.

Maintenance Booklet
48
Miles 1,000 - 3,00010,000 20,000 30,000 40,000 50,000 60,000 70,000
Time (Years) - - - -1 2 3 4 5 6 7
Tire rotation ( page 50) If applicable to your vehicle’s tire configuration (see page 6), tire rotations should be performed in accordance with the tire manufacturer’s rec-
ommended intervals, or sooner at first signs of irregular (uneven) treadwear. Tire manufacturer’s rotation recommendations will necessitate a
tire rotation at least once in between maintenance services and at every maintenance service based on Mercedes-Benz maintenance intervals.
Service ( page 51) •••••••
Additional Work: ( page 55)•••••••
Record customer’s vehicle settings •••••••Wash vehicle•••••••Check body for paint damage •••••••Check starter and consumer battery status•••••••Replace stabilizer bar bushings•••••••Replace combination filter•••Replace engine air filter•••Replace poly-V-belt•Replace compressor poly-V-belt •Replace wheel bolts•2
Replace fuel filter•3
Replace spark plugs •3
Replace brake fluid•1•1•1
Check vehicle ride height and wheel loads•1•1•1
Check wheel settings•1•1•1
Replace screws of underbody paneling•1•1•1
Replace coolant for main circuit •1
Replace coolant for low temperature circuit•1
Replace battery in remote control key•1
Replace rear differential oil•Replace transmission oil and filter •7
High-mileage checks ( page 58)
Maintenance service overview Mercedes-Benz SLR (199)
1 not mileage dependent; only time-interval applies 2 at 40,000 miles or 3 years 3 at 60,000 miles or 4 years 7 not time dependent; only milage-interval applies

49 Maintenance Booklet
Miles80,000 90,000 100,000 110,000120,000130,000140,000150,000
Time (Years) 8 9 101112131415
Tire rotation If applicable to your vehicle’s tire configuration (see page 6), tire rotations should be performed in accordance with the tire manufacturer’s rec-
ommended intervals, or sooner at first signs of irregular (uneven) treadwear. Tire manufacturer’s rotation recommendations will necessitate a
tire rotation at least once in between maintenance services and at every maintenance service based on Mercedes-Benz maintenance intervals.
Service ••••••••
Additional Work: ••••••••
Record customer’s vehicle settings ••••••••Wash vehicle••••••••Check body for paint damage ••••••••Check starter and consumer battery status••••••••Replace stabilizer bar bushings••••••••Replace combination filter••••Replace engine air filter••••Replace poly-V-belt••Replace compressor poly-V-belt ••Replace wheel bolts•4•5
Replace fuel filter•6
Replace spark plugs •6
Replace brake fluid•1•1•1•1
Check vehicle ride height and wheel loads•1•1•1•1
Check wheel settings•1•1•1•1
Replace screws of underbody paneling•1•1•1•1
Replace coolant for main circuit •1•1
Replace coolant for low temperature circuit•1•1
Replace battery in remote control key•1•1
Replace rear differential oilReplace transmission oil and filter
High-mileage checks •7
Maintenance service overview Mercedes-Benz SLR (199)
1 not mileage dependent; only time-interval applies 4 at 80,000 miles or 6 years 5 at 120,000 miles or 9 years 6 at 120,000 miles or 8 years 7 not time dependent; only milage-interval applies

53 Maintenance Booklet
Service
Engine compartment
Leakage - Major components
Check for chafe marks, line routing, damaged components
In the event of leakage, determine cause and perform repair via separate work order 0053
Change engine oil and filter 01 01
Check condition of poly-V-belts 1351
Check engine mounts - - - -
Check the following fluid levels, correct if necessary
Brake system4210
Power steering4611
Engine cooling system (main and low temperature circuits), anti-corrosion/antifreeze protection2010
Bleed low temperature circuit2010
Ve h i c l e f ro n t / r e a r
Check window glass and exterior lighting lenses- - - -
Check headlamp setting 8260
Check wiper blade condition- - - -

55 Maintenance Booklet
Additional Work to be Performed together with the Respective Service
At every service
Record customer’s vehicle settings - - - -
Wash vehicle- - - -
Check body for paint damage 9850
Check charge status of starter and consumer batteries using “Midtronics MCR 717“ tester, recharge if necessary 5452
Replace stabilizer bar bushings 3281
Once at 10,000 miles or 1 year
Replace rear differential oil3501
At every 20,000 miles or 2 years
Replace combination filter 8384
Replace engine air filter 0980
Once at 40,000 miles
Automatic transmission - oil and filter change 2702
At every 40,000 miles or 3 years
Replace wheel bolts- - - -

57 Maintenance Booklet
Spark Plug Replacement Intervals
Replace Spark PlugsEngine
155
At every 60,000 miles or 4 years•

Maintenance Booklet
58
Recommended additional maintenance checks for high-mileage vehicles
At 150,000 miles
Check if all fluid levels and changes are updated
Transmission - - - -
Rear axle- - - -
Check if air, fuel, ventilation filters are updated
Engine air filter - - - -
Fuel filter- - - -
Combination filter- - - -