Bmw 335i Convertible 2007 User Manual download pdf (Page 240)

Giving and receiving assistance

238

Preparation

1. Check whether the battery of the other

vehicle has a voltage of 12 volts and

approximately the same capacitance in Ah.

This information can be found on the bat-

tery.

2. Switch off the engine of the assisting vehi-

cle.

3. Switch off any consumers in both vehicles.

There must not be any contact between

the bodies of the two vehicles, otherwise

there is a danger of shorting.<

Connecting jumper cables

Connect the jumper cables in the correct

order, so that no sparks which could

cause injury occur.<

Your BMW has a jump-starting connection in

the engine compartment which acts as the bat-

tery's positive terminal, refer also to the Engine

compartment overview on page 224. The cap is

marked with +.

1. Pull the cap of the BMW jump-starting con-

nection up to remove.

2. Attach one terminal clamp of the plus/+

jumper cable to the positive terminal of the

battery or a starting-aid terminal of the vehi-

cle providing assistance.

3. Attach the second terminal clamp of the

plus/+ jumper cable to the positive terminal

of the battery or a starting-aid terminal of

the vehicle to be started.

4. Attach one terminal clamp of the minus/–

jumper cable to the negative terminal of the

battery or to an engine or body ground of

the assisting vehicle.

Your BMW has a special nut as body ground

or negative pole.

5. Attach the second terminal clamp of the

minus/– jumper cable to the negative termi-

nal of the battery or to the engine or body

ground of the vehicle to be started.

Starting the engine

1. Start the engine of the donor vehicle and

allow it to run for a few minutes at slightly

increased idle speed.

2. Start the engine on the other vehicle in the

usual way.

If the first start attempt is not successful,

wait a few minutes before another attempt

in order to allow the discharged battery to

recharge.

3. Let the engines run for a few minutes.

4. Disconnect the jumper cables by reversing

the above connecting sequence.

If necessary, have the battery checked and

recharged.

Never use spray fluids to start the

engine.<

Tow-starting, towing away

Observe the applicable laws and regula-

tions for tow-starting and towing vehi-

cles.<

Do not transport any passengers other

than the driver in a vehicle that is being

towed.<

Online Edition for Part no. 01 41 0 013 670 - © 02/07 BMW AG

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