Page 360 of 430

357 Battery
Te ch n i c a l
data Instruments 
and controlsOperation DrivingInstrument 
cluster displayPractical hintsCar care Index 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.Battery
Important!
Battery replacement information:
The maintenance-free battery is located in the trunk 
under the right-hand wheel well 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.
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.
Wa r n i n g !
Failure to follow these instructions can result in 
severe injury or death.Never lean over batteries while connecting, you 
might get injured.Battery fluid contains sulfuric acid. Do not allow 
this fluid to come in contact with eyes, skin or 
clothing. In case it does, immediately flush affected 
area with water and seek medical help if necessary.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 362 of 430

359 Jump starting
Te ch n i c a l
data Instruments 
and controlsOperation DrivingInstrument 
cluster displayPractical hintsCar care Index Jump startingImportant!
A discharged battery can freeze at approximately +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 
approximately 2 AWG
•Maximum length of 11.5 ft. (3.5 m).
If the battery is discharged, the engine should 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 under the right-hand 
wheel well 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 batteries while connecting 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 
clothing. In case it does, immediately flush affected 
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. 
     
        
        Page 363 of 430

360 Jump starting
Te ch n i c a l
data Instruments 
and controlsOperation DrivingInstrument 
cluster displayPractical hintsCar care Index
Proceed as follows:
1. Position the vehicle with the charged battery so that 
the jumper cables will reach, but never let the 
vehicles touch. Make sure the jumper cables do not 
have loose or missing insulation.
2. On both vehicles:
•Turn off engine and all lights and accessories, 
except hazard warning flashers or work lights.
•Apply parking brake and shift selector lever to 
position “P”.
Important!
3. Clamp one end of the first jumper cable to the 
positive (+) terminal of the discharged battery and 
the other end to the positive (+) terminal of the 
charged battery. Make sure the cable clamps do not 
touch any other metal parts. 
4. Clamp one end of the second jumper cable to the 
grounded negative (–) terminal of the charged 
battery and the final connection to the negative (–) 
under hood terminal of the disabled vehicle.Important!
5. Start engine of the vehicle with the charged battery 
and run at high idle. Make sure the cables are not 
on or near pulleys, fans, or other parts that move 
when the engine is started. Allow the discharged 
battery to charge for a few minutes. Start engine of 
the disabled vehicle in the usual manner.
6. After the engine has started, remove jumper cables 
by exactly reversing the above installation 
sequence, starting with the last connection made 
first. When removing each clamp, make sure that it 
does not touch any other metal while the other end 
is still attached.
Note:
If engine does not run after several unsuccessful 
starting attempts, have it checked at the nearest 
authorized Mercedes-Benz Center.
Excessive unburned fuel may damage the catalytic 
converter. 
     
        
        Page 364 of 430

361 Towing the vehicle
Te ch n i c a l
data Instruments 
and controlsOperation DrivingInstrument 
cluster displayPractical hintsCar care Index Towing the vehicleImportant!
When towing the vehicle, please, note the following:
With the automatic central locking activated and the 
electronic key in starter switch position 2 (vehicles with 
KEYLESS-GO: in “On” position, see page 232), the 
vehicle doors lock if the left front wheel as well as the 
right rear wheel are turning at vehicle speeds of 
approximately 9 mph (15 km / h) or more.
To prevent the vehicle door locks from locking, 
deactivate the automatic central locking. See 
“VEHICLE” under “Individual settings” on page 146.
Towing of the vehicle should only be done using the 
properly installed towing eye bolt. Never attach tow 
cable, tow rope or tow rod to vehicle chassis, frame 
or suspension parts.
Note:
The selector lever will remain locked in position “P” and 
the electronic key cannot be turned in the starter switch 
if the battery is disconnected or discharged. See battery 
on page 357 or jump starting on page 359.
Wa r n i n g !
Prior to towing the vehicle with all wheels on the 
ground, make certain that the electronic key is in 
starter switch position 2. The maximum towing 
speed and distance with the vehicle on the ground 
is 30 mph (50 km/h) and 30 miles (50 km).If the electronic key is left in the starter switch 
position 0 for an extended period of time, it can no 
longer be turned in the switch. To unlock, remove 
electronic key from starter switch and reinsert.