BMW 5 Series: Jump starting - Breakdown assistance - Mobility - BMW 5 Series Owners ManualsBMW 5 Series: Jump starting

Notes

If the battery is discharged, an engine can be started using the battery of another vehicle and two jumper cables. Only use jumper cables with fully insulated clamp handles.

To prevent personal injury or damage to both vehicles, adhere strictly to the following procedure.

To avoid the risk of potentially fatal injury, Do not touch live parts
To avoid the risk of potentially fatal injury, always avoid all contact with electrical components while the engine is running.◀

Preparation

1. Check whether the battery of the other vehicle has a voltage of 12 volts. This information can be found on the battery.
2. Switch off the engine of the assisting vehicle.
3. Switch off any electronic systems/power consumers in both vehicles.

Make sure that there is no contact between Bodywork contact between vehicles
Make sure that there is no contact between the bodywork of the two vehicles; otherwise, there is the danger of short circuits.◀

Starting aid terminals

Connect the jumper cables in the correct Connecting order
Connect the jumper cables in the correct order; otherwise, there is the danger of injury from sparking.◀

The so-called starting aid terminal in the engine

The so-called starting aid terminal in the engine compartment acts as the battery's positive terminal.

The body ground or a special nut acts as the

The body ground or a special nut acts as the negative terminal

Connecting the cables

1. Pull off the cap of the BMW starting aid terminal.
2. Attach one terminal clamp of the positive jumper cable to the positive terminal of the battery, or to the corresponding starting aid terminal of the vehicle providing assistance.
3. Attach the other end of the cable to the positive terminal of the battery, or to the corresponding starting aid terminal of the vehicle to be started.
4. Attach one terminal clamp of the negative jumper cable to the negative terminal of the battery, or to the corresponding engine or body ground of the vehicle providing assistance.
5. Attach the other end of the cable to the negative terminal of the battery, or to the corresponding engine or body ground of the vehicle to be started.

Starting the engine

Never use spray fluids to start the engine.

1. Start the engine of the assisting vehicle and let it run for several minutes at an increased idle speed.
2. Start the engine of the vehicle being started in the usual way.
If the first starting attempt is not successful, wait a few minutes before making another attempt in order to allow the discharged battery to recharge.
3. Let both engines run for several minutes.
4. Disconnect the jumper cables in the reverse order.
Check the battery and recharge if necessary

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