Date of printing:

10/19/2019

Interactive Owner's Manual [In depth | Practical advice | Battery (vehicle)]

Owner's Manual version: ÄJ 2014-Ra

Note: The online Owner's Manual is the latest version available. Deviations between this manual and items specific to your vehicle may occur since Mercedes-Benz constantly adapts its vehicles to the latest technology and modifies design and equipment. Please note that this online Owner's Manual does not under any circumstances replace the printed Owner's Manual which is supplied with the vehicle.

Battery (vehicle)

Important safety notes

In order for the battery to achieve the maximum possible service life, it must always be sufficiently charged.

Have the battery charge checked more frequently if you use the vehicle mainly for short trips or if you leave it standing idle for a lengthy period.

When replacing a battery, only use a battery recommended by smart. More details can be obtained from any qualified specialist workshop, e.g. a smart Centre.

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WARNING

Comply with safety precautions and take protective measures when handling batteries.

Risk of explosion

Fire, naked flames and smoking are prohibited when handling the battery. Avoid creating sparks.

Battery acid is caustic. Avoid contact with the skin, eyes or clothing.

Wear suitable protective clothing, in particular gloves, an apron and a face mask.

Immediately rinse acid splashes off with clean water. Consult a doctor if necessary.

Wear eye protection.

Keep children away.

Observe this Owner's Manual.

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Do not operate the vehicle without the battery as this can result in damage to electrical equipment.

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WARNING

Do not place any metal objects on a battery. Otherwise, you could cause a short circuit and the battery's highly flammable gas mixture could ignite.

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WARNING

Contact of the positive terminal of the connected battery with vehicle components can result in a short circuit which can ignite the highly explosive gas mixture generated by the battery. You and others could thus be severely injured.

  • When disconnecting the battery, always disconnect the negative terminal first and only then disconnect the positive terminal.

  • When connecting the battery, always connect the positive terminal first and only then connect the negative terminal.

  • Never loosen or disconnect battery terminals while the engine is running.

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Environmental note

Do not dispose of batteries with the household rubbish. Dispose of defective batteries in an environmentally responsible manner.

Take them to a smart Centre or a special collection point for old batteries.

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Make sure that:

  • you observe the battery terminal clamp polarity. The battery could otherwise be destroyed.

  • you never allow wrenches or other metal objects to come into contact with both battery terminals or the positive terminal and the vehicle body simultaneously. This could otherwise result in a short circuit.

Fitting and removing the 12 volt battery

Removing the carpet

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Switch off the engine.

Switch off all electrical consumers.

Open the front-passenger door.

Slide the passenger seat back.

Unscrew carpet holder mbsymb6_inv_003a.png using a suitable tool.

Fold back the carpet.

Removing the battery

images/img13b82ad9a8232201351f19155ef015bb_1_--_--_JPG72.jpg

Unscrew two fastening discs mbsymb6_inv_003b.png on the footrest anti-clockwise.

Pull footrest mbsymb6_inv_003a.png to the side and out of the vehicle.

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Remove positive terminal cover mbsymb6_inv_003f.png.

Unscrew negative terminal mbsymb6_inv_003d.png, then unscrew positive terminal.

Unscrew battery holder mbsymb6_inv_0041.png.

Disconnect the breather hose.

Remove the battery.

Charging the battery

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WARNING

Only charge the battery in a well-ventilated area. As the battery is being charged, gases can escape and generate minor explosions. This could injure you and other persons or cause damage to the paintwork or acid corrosion on the vehicle.

You can obtain information on battery chargers which allow the battery to be charged while still installed from a qualified specialist workshop.

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WARNING

There is a risk of acid burns during the charging process due to the gases which escape from the battery. Do not lean over the battery during the charging process.

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WARNING

Battery acid is caustic. Avoid contact with the skin, eyes or clothing.

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Only charge the fitted battery with a battery charger which has been tested and approved by smart. These battery chargers allow the battery to be charged while still fitted in the vehicle.

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Only use battery chargers with a maximum charging voltage of 14.8 V.

Observe the notes in the operating instructions for your battery charger.

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Never charge a frozen battery. Have the battery checked by a qualified specialist workshop, e.g. a smart Centre. The housing could be damaged.

Fitting the battery

If applicable, switch off all electrical consumers first.

Place the battery in the intended space.

Connect the breather hose.

images/imgec717bae946ad2a8351f1915094c0249_1_--_--_JPG72.jpg

Screw on battery holder mbsymb6_inv_0041.png.

First screw on positive terminal, then screw on negative terminal mbsymb6_inv_003d.png.

Fit positive terminal cover mbsymb6_inv_003f.png.

Fit the footrest.

Tips for battery care

  • In normal operating conditions, the battery of your vehicle does not require maintenance (DIN 43539/T2). However, have the battery charge and the electrolyte level checked at a qualified specialist workshop before the onset of winter.

  • Only replace the battery with a battery that has a central gas-venting cover. This prevents corrosion damage.

  • If the vehicle is used only for extreme short-distance driving, charge the battery approximately every three months. This ensures that your vehicle will always start and prolongs the service life of the battery.

  • If you leave your vehicle parked up for longer periods, disconnect the battery and charge it approximately every six months.

  • If your vehicle has been parked up for a longer period of time without the battery being disconnected (three to four weeks), recharge the battery.

  • If you plan to leave your vehicle parked up for longer than six weeks, contact a qualified specialist workshop.

Notes

Date of printing:

10/19/2019

Interactive Owner's Manual [In depth | Practical advice | Battery (vehicle)]

Owner's Manual version: ÄJ 2014-Ra

Note: The online Owner's Manual is the latest version available. Deviations between this manual and items specific to your vehicle may occur since Mercedes-Benz constantly adapts its vehicles to the latest technology and modifies design and equipment. Please note that this online Owner's Manual does not under any circumstances replace the printed Owner's Manual which is supplied with the vehicle.