Using jump starting with another battery

Updated 11/15/2021

Using jump starting with another battery

If the car's starter battery (12 V) is discharged then the car's electrical system can be started with current from another battery.

If the battery with a voltage of 12V (starter battery) is discharged, the car's electrical system can be started by means of jump starting using jump leads and another car. If the hybrid battery is also discharged, it will need to be charged using a charging cable after starting the electrical system in order to be able to start the engine.

P6-2017-XC40H-Jump starting

Charging points for jump starting own car. There are two connection points under the cover. Only use the one closest to the passenger compartment.


The car's charging points are only intended for jump starting the car itself. Do not use them to start other cars – the fuse for the charging circuit may be overloaded so that it stops working.

If a fuse has been overloaded, the message 12 V Battery Fuse failure Service required is shown in the driver display. Volvo recommends that an authorised Volvo workshop is contacted.

When jump-starting the car, the following steps are recommended to avoid short circuits or other damage:

Set the car's electrical system in ignition position 0.

Check that the donor battery has a voltage of 12 V.

If the battery is installed in another car – switch off its engine and make sure that the cars do not touch each other.

Connect one of the red jump lead's clamps to the donor battery's positive terminal (1).


Connect the jump lead carefully to avoid a short circuit and contact with other components in the engine compartment.

Open the positive charging point's cover (2).

There are two connection points under the cover. Only use the connection point closest to the passenger compartment.

Attach the red jump lead's other clamp onto the car's positive charging point (2).

Attach one of the black jump lead's clamps to the donor battery's negative terminal (3).

Attach the black jump lead's other clamp onto the car's negative charging point (4).

Check that the jump lead clamps are affixed securely so that there are no sparks during the starting attempt.

Start the engine of the donor car and allow it to run for a few minutes at a rotation speed higher than normal idle approx. 1500 rpm.

Hold down the start button for at least 5 seconds without your foot on the brake to activate the car's electrical system.


When starting the engine in normal conditions, the car's electric drive motor is prioritised – the internal combustion engine remains switched off. This means that after the start button has been depressed, the electric motor has "started" and the car is ready to move. A started motor is indicated by the driver display's indicator lamps extinguishing and its preset theme illuminating.


Do not touch the connections between cable and car during the starting attempt. There is a risk of sparks forming.

Wait at least 2 minutes in order to charge the starter battery and then make a start attempt.

If the attempt at starting fails, repeat points 11 and 12.

Remove the jump leads in reverse order - first the black and then the red.

Make sure that none of the black jump lead's clamps comes into contact with the car's positive charging point, the donor battery's positive terminal, or the clamp connected to the red jump lead.


  • The battery can generate oxyhydrogen gas, which is highly explosive. A spark can be formed if a jump lead is connected incorrectly, and this can be enough for the battery to explode.
  • Do not connect the jump leads to any fuel system component or any moving part. Be careful of hot engine parts.
  • The battery contains sulphuric acid, which can cause serious burns.
  • If sulphuric acid comes into contact with eyes, skin or clothing, flush with large quantities of water. If acid splashes into the eyes - seek medical attention immediately.
  • Never smoke near the battery.


The car cannot be started if the hybrid battery is discharged.

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