E-Class - Interactive Owner's Manual [In depth | Practical advice

Jump-starting

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Jump-starting your vehicle

If your vehicle's battery is discharged, the engine can be jump-started from another vehicle or from an external battery using jump leads.

Observe the following points:

Jump-starting may only be performed when the engine and catalytic converter are cold.
Do not start the engine if the battery is frozen. Let the battery thaw first.
Jump-starting may only be performed from batteries with a nominal voltage of 12 V.
Only use jump leads which are protected against polarity reversal and which have a sufficient cross-section and insulated terminal clamps.


Jump leads which are protected against polarity reversal and further information about jump-starting can be obtained from any Mercedes-Benz Service Centre.

Avoid repeated and lengthy starting attempts.

Never start the vehicle using a rapid battery charger.

	Risk of injury
There is a risk of acid burns when jump-starting a vehicle due to the gases which escape from the battery. Do not lean over the battery while the engine is being jump-started.

Risk of explosion

Gases escaping from the battery during jump-starting may cause minor explosions. Avoid creating sparks. Keep naked flames away from the battery, and do not smoke.

Comply with safety precautions and take protective measures when handling batteries. You will find these under "Battery" in the index.

	Make sure that the two vehicles do not touch.
	Depress the parking brake.

	Manual transmission: engage neutral.
	*Automatic transmission:** move the selector lever to P.
	All vehicles: switch off all electrical consumers.

Saloon

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Negative terminal on your vehicle

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Positive terminal on your vehicle

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Positive terminal of donor battery

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Negative terminal of donor battery

	If your vehicle is being jump-started by another vehicle, allow the other vehicle's engine to idle.
	Connect positive terminal on your vehicle to positive terminal of the donor battery using the jump lead, beginning with your own battery.
	Connect negative terminal of the donor battery to negative terminal of your vehicle's battery using the jump lead, connecting the jump lead to the donor battery first.
	Start the engine.
	When the engine is running, switch on a few electrical consumers, e.g. the blower. Do not switch on the lights.
	First disconnect the jump lead from negative terminals and , then from positive terminals and each time beginning with your vehicle's battery.
	Have the battery checked at a qualified specialist workshop, e.g. a Mercedes-Benz Service Centre.

Estate

Cover

Rotary catches

	Turn three rotary catches through a quarter turn.
	Remove cover forwards.

Earth point on your vehicle

Positive terminal on your vehicle (under cover)

	If your vehicle is being jump-started by another vehicle, allow the other vehicle's engine to idle.
	Connect the positive terminals of the two batteries using the jump lead, beginning with your own battery.
	Connect the negative terminal of the donor battery to the body earth point using the jump lead, connecting the jump lead to the negative terminal of the donor battery first.
	Start the engine.
	When the engine is running, switch on a few electrical consumers, e.g. the blower. Do not switch on the lights.

	Remove the jump lead from earth point on your own vehicle and from the negative terminal of the donor vehicle first, then from the positive terminals, beginning with your vehicle's battery.
	Have the battery checked at a qualified specialist workshop, e.g. a Mercedes-Benz Service Centre.

Jump-starting another vehicle

You can jump-start another vehicle which has a flat battery. Observe the following points:

Only 12 V batteries can be jump-started.
Do not jump-start frozen batteries. Allow the battery to thaw first.
Observe the requirements for the other vehicle.
Only use jump leads which are protected against polarity reversal and which have a sufficient cross-section and insulated terminal clamps.

	Risk of acid burns
There is a risk of acid burns when jump-starting a vehicle due to the gases which escape from the battery. Do not lean over the battery while the engine is being jump-started.