How do you start a Subaru with a dead battery?

If your Subaru's battery is dead, you can still start the vehicle using a few simple steps. This guide will walk you through the process of jump-starting a Subaru with a dead battery, ensuring you get back on the road safely and efficiently.

Gather the Necessary Equipment

• Another vehicle with a working battery


• A set of jumper cables

Make sure the other vehicle is parked close enough to your Subaru so the jumper cables can reach, but not so close that the vehicles are touching.

Prepare the Vehicles

• Engage the parking brakes on both vehicles to prevent them from moving.


• Turn off the ignition and all electrical components in both vehicles.


• Locate the battery in your Subaru and identify the positive (+) and negative (-) terminals.

It's important to take these precautions to ensure a safe jump-start process.

Connect the Jumper Cables

1. Connect one end of the red jumper cable to the positive (+) terminal on the dead battery in your Subaru.


2. Connect the other end of the red jumper cable to the positive (+) terminal on the working battery in the other vehicle.


3. Connect one end of the black jumper cable to the negative (-) terminal on the working battery.


4. Connect the other end of the black jumper cable to a metal ground on your Subaru, such as an unpainted bolt or the engine block.

Make sure the jumper cable connections are secure and that the cables are not touching any moving parts in either vehicle.

Start the Vehicles

1. Start the engine of the vehicle with the working battery and let it run for a few minutes to charge the dead battery.


2. Try to start your Subaru. If it doesn't start, let the other vehicle run for a few more minutes.


3. Once your Subaru starts, let it run for a few minutes before disconnecting the jumper cables.

If your Subaru still won't start after a few attempts, there may be a more serious issue with the battery or electrical system, and you may need to seek professional assistance.

Disconnect the Jumper Cables

1. Disconnect the black jumper cable from the metal ground on your Subaru.


2. Disconnect the black jumper cable from the negative (-) terminal on the working battery.


3. Disconnect the red jumper cable from the positive (+) terminal on the working battery.


4. Disconnect the red jumper cable from the positive (+) terminal on the dead battery in your Subaru.

Be careful to avoid any sparks or contact between the jumper cable ends, as this could cause a short circuit.

By following these steps, you should be able to successfully jump-start your Subaru with a dead battery and get back on the road. Remember to have your battery checked and replaced if necessary to prevent future issues.

How to jump start a car Subaru?

To jump-start a Subaru, connect a set of jumper cables in the correct order: red clamp to the positive (+) terminal of the dead battery, the other red clamp to the positive (+) terminal of the good battery, the black clamp to the negative (-) terminal of the good battery, and the final black clamp to an unpainted metal surface on the dead car's frame. With both cars off, start the engine of the good car for a few minutes, then attempt to start the Subaru.
 
What you'll need
A second vehicle with a good battery, A set of jumper cables, and Safety glasses and gloves. 
This video demonstrates how to prepare your Subaru for a jump start: 59sRoadside GuyYouTube · Nov 7, 2024
Step-by-step guide

1. Position the cars: Park the working vehicle close to the Subaru, both engines off, and engage the parking brake. 
2. Open the hoods: Locate the batteries in both vehicles. You may need to remove a plastic cover. 
3. Connect the cables (Red first): 
   • Attach the red clamp to the positive (+) terminal of the dead Subaru battery. 
   • Connect the other red clamp to the positive (+) terminal of the good battery. 
4. Connect the cables (Black second): 
   • Attach the black clamp to the negative (-) terminal of the good battery. 
   • Connect the final black clamp to an unpainted metal surface on the chassis or engine block of the Subaru (away from the battery). 
5. Start the good car: Start the engine of the vehicle with the good battery and let it run for a few minutes. 
6. Start the Subaru: Try to start the engine of the dead Subaru. If it doesn't start, let the good car run for a few more minutes before trying again. 
7. Remove the cables: Once the Subaru is running, carefully remove the jumper cables in the reverse order of connection: black from the Subaru's frame, black from the good battery, red from the good battery, and finally, red from the Subaru's battery. 
8. Keep the Subaru running: Let the Subaru run for at least 15-30 minutes to allow the battery to recharge. If the problem persists, have the battery tested. 

This video shows how to jump start a Subaru and check the alternator: 45sRoadside GuyYouTube · Dec 15, 2021

What happens when a Subaru battery dies?

The engine may not turn over at all, or it may turn over very slowly. In either case, if you have a Subaru dead battery, you will need to jump-start the car. The engine may turn over very quickly but not start. This is because the starter needs more power than a dead battery.

How to start a Subaru with a dead battery?

Button. Presto we're on the road again let's go. So put your key fob right up to the remote. You'll start it it doesn't even need to have a battery in it battery's right here.

How to start a car when the battery is completely dead?

If. Possible. Then start the working car and let it run for a couple of minutes revving it slightly. Then start the dead car once the dead car is running disconnect the cables in the reverse.