Jump Starting
Warning !
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.
If the battery is discharged, the engine should be started with jumper cables and the (12 V) battery of
another vehicle.
The battery is located in the trunk under the trunk floor.
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 (-) terminal of the discharged battery.
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 will 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 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.
Important !
A discharged battery can freeze at approx. +14°F (-10°C). In that case, it must be thawed out before
jumper cables are used. A frozen battery can explode and cause personal injury.
Jumper cable specifications:
• Minimum cable cross-section of 25 mm
2
or approx. 2 AWG
• Maximum length of 11.5 ft. (3.5 m).
Note:
If engine does not run after several unsuccessful starting attempts, have it checked at the nearest
authorized Mercedes-Benz dealer. Excessive unburned fuel may damage the catalytic converter.
