Page 235 of 297
231 Tires, Wheels
Technical
data Instruments 
and controlsOperation DrivingInstrument 
cluster displayPractical hintsCar care Index 6. Using the wrench, loosen but do not yet remove the 
wheel bolts. 7. Remove the protective cover from the jack support 
tube opening by inserting the screwdriver in the 
opening and prying it out.
The tube openings are located directly behind the 
front wheel housings and in front of the rear wheel 
housings.
P40.10-0375-26 
         
        
        
     
        
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232 Tires, Wheels
Technical
data Instruments 
and controlsOperation DrivingInstrument 
cluster displayPractical hintsCar care Index
8. Insert jack arm fully into the tube hole up to the 
stop. Place jack on firm ground. Position the jack so 
that it is always vertical (plumb-line) as seen from 
the side (see arrow), especially if the vehicle is 
parked on an incline.
9. Jack up the vehicle until the wheel is clear of the 
ground. Never start engine while vehicle is raised.
10. Unscrew upper-most wheel bolt and install 
alignment bolt (1) supplied in the tool kit. Remove 
the remaining bolts. Keep bolt threads protected 
from dirt and sand.11. Remove wheel. Grip wheel from the sides. Keep 
hands from beneath the wheels.
12. Clean contact surfaces of wheel and wheel hub. 
Install spare wheel on wheel hub. Insert wheel bolts 
and tighten them slightly.
To avoid paint damage, place wheel f lat against hub 
and hold it there while installing first wheel bolt. 
Unscrew the alignment bolt (1) to install the last 
wheel bolt. 
         
        
        
     
        
        Page 237 of 297

233 Tires, Wheels
Technical
data Instruments 
and controlsOperation DrivingInstrument 
cluster displayPractical hintsCar care Index 13. Lower vehicle. Remove jack and insert jack tube 
cover.
Before storing the jack, the jack arm must be 
lowered almost to the base of the jack. 
Store the spare wheel first and then the vehicle jack.
14. Using the wrench, tighten the five bolts evenly, 
following the sequence illustrated, until all bolts are 
tight.
Observe a tightening torque of 80 ft.lb. (110 Nm). 
15. Ensure proper tire pressure.
16. Depress wheel change switch for level control. The 
indicator lamp in the switch and the ADS 
malfunction indicator lamp will go out.
Wa r n i n g !
Always replace wheel bolts that are damaged or 
rusted.Never apply oil or grease to wheel bolts.Damaged wheel hub threads should be repaired 
immediately.Incorrect mounting bolts or improperly tightened 
mounting bolts can cause the wheel to come off. 
This could cause an accident. Be sure to use the 
correct mounting bolts. 
         
        
        
     
        
        Page 238 of 297

234 Tires, Wheels
Technical
data Instruments 
and controlsOperation DrivingInstrument 
cluster displayPractical hintsCar care Index
Tire inflation pressure
A table (see fuel filler flap) lists the tire inflation 
pressures specified for Mercedes-Benz recommended 
tires as well as for the varying operating conditions.
Important!
Tire pressure changes by approx. 1.5 psi (0.1 bar) per 
18°F (10°C) of air temperature change. Keep this in 
mind when checking tire pressure inside a garage - 
especially in the winter.
Example:
If garage temperature = approx. +68°F (+20°C) and 
ambient temperature = approx. +32°F (0°C) then the 
adjusted air pressure = specified air pressure +3psi 
(+0.2 bar).
Tire pressures listed for light loads are minimum values 
offering high driving comfort. Increased inflation 
pressures for heavy loads produce favorable handling 
characteristics with lighter loads and are perfectly 
permissible. The ride of the vehicle, however, will 
become somewhat harder.
Tire temperature and pressure increase with the vehicle 
speed. Tire pressure should therefore only be checked 
and corrected on cold tires. Correct tire pressure in 
Wa r n i n g !
Do not drive the vehicle while the wheel change 
switch is activated since the vehicle suspension 
will not function properly.Wa r n i n g !
The spare wheel rim is for temporary use only. Use 
for over a total of 12 000 miles (20 000 km) may 
cause wheel rim failure leading to an accident and 
possible injuries. Vehicles with Sport Package:
The dimensions of the spare wheel are different 
from those of road wheels. As a result, the vehicle 
handling characteristics change when driving with 
a mounted spare wheel.The spare wheel should only be used temporarily, 
and replaced with a regular road wheel as quickly 
as possible. 
         
        
        
     
        
        Page 239 of 297

235 Tires, Wheels
Technical
data Instruments 
and controlsOperation DrivingInstrument 
cluster displayPractical hintsCar care Index warm tires only if pressure has dropped below the 
pressure listed in the table and the respective operating 
conditions are taken into consideration.
An underinflated tire due to a slow leak (e.g. due to a 
nail in the tire) may cause damage such as tread 
separation, bulging etc. Regular tire pressure checks at 
intervals of no more than 14 days are therefore 
essential.
If a tire constantly loses air, it should be inspected for 
damage.
The spare tire should be checked periodically for 
condition and inflation. Spare tire will age and become 
worn over time even if never used, and thus should be 
inspected and replaced when necessary.
Wa r n i n g !
Do not overinflate tires. Overinflating tires can 
result in sudden deflation (blowout) because they 
are more likely to become punctured or damaged 
by road debris, potholes etc. Follow recommended 
inflation pressures.
Do not overload the tires by exceeding the specified 
vehicle capacity weight (as indicated by the label 
on the driver’s door latch post). Overloading the 
tires can overheat them, possibly causing a 
blowout. 
         
        
        
     
        
        Page 240 of 297

236 Battery
Technical
data Instruments 
and controlsOperation DrivingInstrument 
cluster displayPractical hintsCar care Index
Battery
Important!
Battery replacement information:
The maintenance-free battery is located in the trunk 
behind the right side cover panel.
The service life of the battery is dependent on its 
condition of charge. The battery should always be kept 
sufficiently charged, in order to last an optimum length 
of time.Therefore, we strongly recom mend that you h ave the 
battery charge checked frequently, and corrected if 
necessary, especially if you use the vehicle less than 
approximately 200 miles (300 km) per month, 
mostly  for sh ort di stance trips, or if it  is not u sed for 
long periods of time.
Only charge a battery with a battery charger after the 
battery has been disconnected from the vehicle’s 
electrical circuit.
Always disconnect the battery negative lead first and 
connect last.
When removing and connecting the battery, always 
make sure that all electrical consumers are off and the 
key is in steering lock position 0. The battery must 
always be securely installed when the vehicle is in 
operation. During removal and installation always 
protect the disconnected battery positive (+) terminal 
with the cover attached to the battery.
While the engine is running the battery terminal clamps 
must not be loosened or detached, otherwise the 
generator and other electronic components will be 
damaged.
Important!
Wa r n i n g !
Failure to follow these instructions can result in 
severe injury or death.Never lean over batteries w hile connecting, you 
might get injured.Battery fluid contains sulfuric acid. Do not allow 
this fluid to come in contact with eyes, skin or 
cloth ing. In c ase it does, imm edi ately f lu sh af fec ted 
area with water and seek medical help.A battery will also produce hydrogen gas, which is 
flammable and explosive. Keep flames or sparks 
away from battery, avoid improper connection of 
jumper cables, smoking etc. 
         
        
        
     
        
        Page 241 of 297
237 Battery
Technical
data Instruments 
and controlsOperation DrivingInstrument 
cluster displayPractical hintsCar care Index Do not close a door with the windows fully closed while 
the power supply is interrupted (battery disconnected or 
empty).
Doing so could damage the window frame.
Note:
After reconnecting the battery also set the clock, 
resynchronize the express feature of the power 
windows, the electronic stability program (ESP) and the 
adaptive damping System (ADS).
See page 79 for setting clock, page 41 for power 
windows, page 193 for ESP and page 199 for ADS. Battery Recycling
Batteries contain materials that can harm the 
environment with improper disposal.
Large 12 Volt storage batteries contain lead.
Recycling of batteries is the preferred method of 
disposal.
Many states require sellers of batteries to accept old 
batteries for recycling. 
         
        
        
     
        
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238 Jump starting
Technical
data Instruments 
and controlsOperation DrivingInstrument 
cluster displayPractical hintsCar care Index
Jump startingImportant!
A discharged battery can freeze at approx. +14°F
(–10°C). In that case, it must be thawed out before 
jumper cables are used. Attempting to jump start a 
frozen battery can result in it exploding, causing 
personal injury.
Jumper cable specifications:
• Minimum cable cross-section of 25 mm
2 or approx. 
2AWG
•Maximum length of 11.5 ft. (3.5m).
If th e battery is discha rged, th e eng ine shoul d be started  
with jumper cables and the (12 V) battery of another 
vehicle.
Only use 12 V battery to jump start your vehicle. Jump 
starting with more powerful battery could damage the 
vehicle’s electrical systems, which will not be covered 
by the Mercedes-Benz Limited Warranty.
The battery is located in the trunk behind the right side 
cover panel.
Wa r n i n g !
Failure to follow these directions will cause 
damage to the electronic components, and can lead 
to a battery explosion and severe injury or death.Never lean over batteri es wh ile connec ting or jump 
starting, you might get injured.Battery fluid contains sulfuric acid. Do not allow 
this fluid to come in contact with eyes, skin or 
cloth ing. In c ase it does, imm edi ately f lu sh af fec ted 
area with water, and seek medical help if 
necessary.A battery will also produce hydrogen gas, which is 
flammable and very explosive. Keep flames or 
sparks away from battery, avoid improper 
connection of jumper cables, smoking etc.Read all instructions before proceeding.