Car Won’t Start With Jump – What Are The Reasons?

Last Updated on February 6, 2023 by Leepu Da Maxim

A car won’t start with a jump if the problem is not in the battery or cables. The most likely culprits are a bad starter, dead alternator, or bad ignition switch.

Key Takeaways

  • If the safety switch of your car is broken then you won’t be able to jump start a car
  • If the car’s ignition switch is malfunctioning then you won’t be able to jump start a car
  • If the battery can’t hold the charge then you will find it very difficult to jump start the car
  • Disconnected negative connection is one of the main reasons you won’t be able to jump start a car

20+ Reasons Of Why Car Won’t Jumpstart

Reasons Of Why Car Won't Jumpstart

The list of reasons why a car won’t jumpstart is long and varied. There are a number of factors that can contribute to a dead battery. Windy conditions, low fuel levels, and loose connections are just some examples. It can be frustrating to get stuck somewhere with a flat battery but don’t worry there are plenty of methods you can use to jumpstart your car.

1) Check the connection between the battery and the terminals on the vehicle – it should be tight and give off sparks

2) Check to see if there is any corrosion on the metal terminals

3) Battery may not be fully charged

4) Battery may not hold a charge

5) Loose or corroded terminals

6) Corroded or wet alternator belt

7) Bad alternator

8) Dead Battery

9) Damaged Battery Cable Ends

10) Damaged Alternator or Voltage Regulator

11) Damaged Starter

12) Weak Spark at the Spark Plug Wires

13) Loose, Dirty, or Disconnected Ground Connection at the Engine Block or Frame

14) Loose, Dirty, or Disconnected Positive Connection at the Battery

15) Loose, Dirty, or Disconnected Negative Connection at the Battery

16) Faulty Kill-switch

17) The starter solenoid has failed.

18) Wires are disconnected or corroded.

19) Faulty battery terminal connection.

20) Charging system may be faulty.

21) The alternator belt could be broken or slipping.

9 Ways To Fix Car’s Jumpstarting Problems

Ways To Fix Cars Jumpstarting Problems

Let’s talk about 9 ways to fix a car’s jumpstarting problems.

1. The first step is to check the battery and the terminals. If there is a need for replacement or repair, do so.

2. The next step is to remove corrosion from battery terminals and cables by using a wire brush. When the corrosion has been removed, apply some petroleum jelly on the terminal clamps and cable connectors to prevent future corrosion buildup.

3. The CarsAmazing Auto Mechanic Team suggests that when jumpstarting the car, you should always connect the jumper cables in this order: positive (red) to positive (red), negative (black) to negative (black), and then finally, attach one end of the jumper cable to a grounded metal part of your car and then attach it onto your vehicle’s metal frame before attaching it onto another grounded.

4. Do not connect the positive terminal on the battery first and then the negative terminal on the car. The sequence of connection should be negative on the car and then positive on the battery.

5. Not connecting terminals properly or connecting them incorrectly will lead to an improper connection.

6. Connecting cars batteries together will also lead to an improper connection which can damage both batteries and may even start a fire.

7. Use a booster pack: this is a key that can be bought from any auto parts store for a small fee. It does not need any cables which can be confusing for some people who are not familiar with cars.

8. Use jumper cables: these are typically found in most garages and should also come with instructions on how to use them. They should also come in different lengths, so find one that is long enough for your needs.

9. Contact an auto mechanic: if you do not want to spend money on the previous two options, then you could contact an auto mechanic and they may help you.


When the car is turned on and it doesn’t start, it could be caused by something as easy as a low battery. So, you need to check if the battery has enough charge before jumping into the car. If the battery is not discharged, then you need to see if there are any loose or corroded connections. You can also check for any loose or corroded connections in all of the other parts of your vehicle for this may cause your car not to start.