How to Start a Car with a Bad Ignition Switch

A functional ignition switch is very important in turning on a car but what happens when you try to start your engine and you find out that the ignition switch has gone bad?

Although, there are other things that might come to minds such as a dead battery, bad spark plugs, or zero injector pulse, however, in this article, we’re going to discuss a bad ignition switch.

However, take this as a quick tip, the ways to start a car with a Bad Ignition Switch include hot wiring, using jumper cables, or using screwdrivers.

Without wasting much time, let’s dive into the symptoms of a bad ignition switch and how to start a car with a Bad Ignition Switch.

Symptoms of a Bad Ignition Switch

As discussed above, there are certain factors that will cause your car not to respond other than a faulty ignition switch.

The ignition switch simply serves as an activator for the flow of electrical pulses needed to rev the engine.

However, there are certain symptoms to watch out for that’ll give you heads-up that the issue is from a bad ignition switch. Some of them include

1. Vehicle not Responsive

When you insert your key into the ignition switch and it refuses to respond even after several trials then your ignition switch could be faulty probably due to wear of internal components.

2. Difficulty turning the Key

If the key gets stuck or over-free when trying to turn ON your car then it’s likely a fault from your ignition switch.

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3. No starter motor sound

By default, the engine is supposed to produce a sound when you turn the keys. When no sound is produced then your ignition switch is bad.

4. Vehicle stalling

If your vehicle frequently turns off itself while the engine is ON then you’ll need to check the state of the ignition switch.

5. Stagnant Steering Wheel

If you notice that your steering wheel is locked even after inserting your key then you’ll need to change the complete ignition cylinder.

How to Start a Car with a Bad Ignition Switch

Here’s a quick guide on how to start a car with a Bad Ignition Switch.

1. Hot-Wiring

If you’re making use of older car models then it won’t be difficult hot wiring your ignition switch.

  1. Go to the steering wheel column and remove the rubber casing to display all internal parts and wiring
  2. Now, find the wiring harness connector (Because there are so many connections and wires in this location, it could be challenging to find the precise connector. However, it is typically found near the middle of the steering column. The additional cables, connectors, and wires are connected to the wipers, lights, and other accessories.)
  3. Simply locate the ignition, battery, and starter connectors. The connectors can be identified with the help of the following color codes: Ignition – (Red), Battery – (Yellow), Starter – (Brown) – [Might differ depending on car model]
  4. Next, strip the insulators off the battery wires and join them together.
  5. Now, connect the ignition wires to the battery to switch on other electrical components.
  6. Finally, to start the car, remove the insulators from the starter wire and place it on the connected battery wires.
  7. The car should start now giving you the option to rev the engine for some time before driving off.
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2. Using a Drill and Screw Driver

This alternative works very fine but should be done with caution to prevent causing permanent damage to the ignition switch.

  • Start by drilling the keyhole to the exact length of the original key using a metal drill (this will damage the ignition pins).
  • You can now insert your screwdriver into the keyhole and turn it as you would with your key.

It’s quite simple but dangerous.

3. Using a Jumper Cable

Open the hood of your car to reveal the ignition coil and battery

Now, connect the positive terminal of the car battery with the positive side of the ignition coil with the help of a jumper cable, this will give power to the dashboard making it easier for the engine to respond.

Next, unplug the solenoid from the ignition switch wiring before connecting the negative solenoid to the positive terminal of your car battery.

Now, attach the positive solenoid terminal to the connection point of the ignition switch to turn on the solenoid which in turn should start the car.

How to Test an Ignition Switch

If you want to purchase a new ignition switch or would love to check if the current switch is still in working condition, then here are ways you can test an ignition switch.

  • Using a test light
  • Using a Multimeter

Start the testing by turning off the switch then join the positive metal on the multimeter to the wiring on the switch and the negative metal to any bare metal on the vehicle.

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Set the multimeter to measure voltage while the key is set to the RUN position, if the results on the multimeter give anything less than 90% then the ignition switch is faulty. That’s all for the multimeter test.

On the other hand, a light test requires that you make sure that your keys are set in the RUN position then attach the Brown and yellow wires on the ignition to the test voltage. You can now set the key to the start position before connecting the Red wire.

This procedure should illuminate the lamp but a damaged ignition switch will not produce any feedback.

Conclusion

I’m sure a bad ignition switch shouldn’t stop you from driving your car, especially in case of an emergency.

You can also check your buyer manual if you get confused about the wiring explained above.

Furthermore, you can take your car to an auto engineer for proper troubleshooting, fixing, or replacement if necessary.