The ignition switch is vital in managing your vehicle’s electrical system. Not only does it power its components, but it also starts and stops the engine. Several symptoms may arise when this part fails, indicating that it may be time for a replacement.
Knowing the signs of a bad ignition switch can help you address the issue sooner rather than later, ensuring your vehicle continues to operate normally.
What Are the Signs of a Bad Ignition Switch?
A faulty ignition switch can lead to a range of problems with your vehicle’s performance and functionality. But how can you tell if the ignition switch is bad? Here are some key indicators that suggest your ignition switch has gone bad and may need to be swapped out for a new one:
Engine Won’t Start (or Stop)
A common sign of a bad ignition switch is when the engine won’t start. If the engine cranks but doesn’t ignite, there may be an issue with the ignition system. In some cases, the engine may even keep running despite the key being removed from the ignition, although this is pretty rare.
Key Won’t Turn
Difficulty turning the key can indicate a faulty ignition switch. If the key is hard to turn or gets stuck in the keyhole, it could be a sign of serious issues with the ignition system..
Quiet Ignition
If your car is silent when you turn the ignition key, it could be due to a number of different problems. A dead battery is often the first thing to check, but faulty wiring or a malfunctioning ignition switch could also be the problem.
Stuck Steering Wheel
The steering wheel features a mechanical lock that engages with the ignition switch, providing extra security when the car is parked. However, if you experience difficulty turning the wheel, it’s important to have your vehicle inspected to prevent further issues.
Flickering Dashboard Lights
If you notice your dashboard lights flickering, it could be an ignition switch symptom, although warning lights can also signal problems like a low battery or the need for an oil change.
Accessories Won’t Power On
When your car’s accessories—like the radio or windshield wipers—won’t activate when you turn the key, it could point to a problem with the ignition’s electrical supply.
What Does the Ignition Switch Do?
To better understand the ignition switch and why its proper operation is essential to your vehicle, let’s discuss what this part does and how it works.
What is an Ignition Switch?
The ignition switch controls the flow of power from the battery to key components of your vehicle. It directs electrical current to the starter motor, ignition system, and various accessories. Acting as the main control, it is essential for both operating the vehicle’s electrical systems as well as starting and stopping the engine.
How Does an Ignition Switch Work?
The switch typically has several positions: “Lock/Off,” “Run/On,” “Start,” and “Accessory.” Each position serves a specific function, controlling the flow of electrical power to different systems within the vehicle. Understanding how ignition switches work involves knowing the function of each position.
- Lock/Off - disables power to all electrical systems and locks the steering wheel to prevent any movement (in vehicles with automatic transmissions, it also locks the transmission gear).
- Run/On - activates the engine controls and other electrical circuits (but not the starter motor).
- Accessory - power is supplied to non-essential systems such as the radio, dashboard lights, and other accessories.
- Start - this position engages both the starter motor and engine controls, allowing you to fire up the engine and start the car.
Where is the Ignition Switch Located?
The ignition switch is usually found near or on the steering column, near the ignition lock cylinder where the key is inserted. Keep in mind that its exact placement may depend on the vehicle’s make and model. It may be mounted directly on the steering column in an older vehicle or, if you have a modern car with a push-button start, the ignition switch is usually found on the dashboard panel or within the steering column housing for a more streamlined design.
Ignition Switch Replacement Cost
How much does it cost to replace an ignition switch? It can vary based on your vehicle’s make and model. For instance, the cost to replace a Mazda MPV van ignition switch is generally more expensive than replacing it in a Toyota Camry. How much you spend will also depend on whether you choose to DIY or have it replaced by a professional, as the latter will also include labor costs.
Professional installation typically ranges from $100 to $250 for the part itself, with labor costs adding another $50 to $150. This brings the total cost to around $150 to $400. If you choose to go the DIY route, you can find ignition switches at $20 up to $100, depending on the part and your vehicle’s unique requirements. Prices may be higher for vehicles with advanced security systems or key programming needs.
While doing the replacement yourself may be the more budget-friendly option, you’ll need the right tools and experience to handle the job. Alternatively, you can also purchase ignition switches, relays, and sensors from CARiD and find a professional repair shop to install them for you.
