Know All About The Car With A Lock Symbol On The Dashboard!

Written By: Terrence Hines
Category: Error Code

If you are seeing a car with a lock symbol on the dash, there is a chance that your vehicle is experiencing some sort of security issue.

If your car has a problem, it is important to get help right away. Ask a mechanic or someone from a car dealership to take a look and fix it. This will make sure that your car is safe to drive.

What Is The Car With A Lock Symbol On The Dashboard Indicates?

Have you ever sat behind the wheel and noticed a car with a lock symbol on the dashboard?

It’s not uncommon to feel unsettled when warning lights start to illuminate on the dashboard but fear not – this specific symbol has a simple explanation.

What is the Car With A Lock Symbol on the Dashboard Indicates?

The car with a lock symbol indicates that the vehicle’s security system has been triggered and is preventing the engine from starting.

Usually, this happens when an unauthorized key is inserted, or the key is damaged.

However, a less common reason for this symbol to appear is an overfilled gas tank, which can cause problems with the evaporative emissions system.

So, if you notice this symbol while driving, check the ignition key first. If you’re positive, it’s not the key; then it could be that pesky overfilled gas tank.

Some Common Warning Signs

Have you ever seen a car with a lock symbol on the dashboard? That means there is something wrong with the anti-theft system. It is trying to protect your car from being stolen.

If you see this symbol when driving, it might mean that an error is about to happen.

1. The Battery Is Low Or Draining Quickly:

It’s always frustrating to be out on the road just to realize that your car battery is low or draining quickly.

Not only can it cause potential safety concerns, but it’s also a hindrance to your daily plans.

A telltale sign that your battery is acting up is when a lock symbol appears on the dashboard. This symbol means that your car security system is active and draining the battery constantly.

The last thing you want is to be stranded in the middle of nowhere with a dead battery, so pay attention to any warning signs and inspect your battery regularly.

2. Check Engine Light Comes On:

When the check engine light comes on, it can be a stressful experience.

It could mean anything from a minor issue like an unplugged sensor to something more serious like a malfunctioning catalytic converter.

If left unresolved, the problem can escalate to the point where the car won’t start, leaving you stranded on the side of the road.

Furthermore, if a lock symbol appears on the dashboard, it’s a clear sign that you need to take immediate action to avoid further damage.

Ignoring seemingly minor issues can lead to costly repairs down the road, so addressing any issues as quickly as possible is essential to keep your car running smoothly.

3. Temperature Gauge Not Stable:

One of the warning symbols that may appear on your car’s dashboard is a lock symbol, indicating that there may be an issue with the car’s security system.

However, another worrying symbol to look out for is a temperature warning light, which may illuminate if your vehicle’s temperature gauge fluctuates too much.

Temperature Gauge Not Stable

A stable temperature gauge is essential for your car’s performance and longevity, as overheating can cause severe damage to the engine.

If you notice that your temperature gauge is unstable, it is crucial to have your vehicle inspected immediately to prevent further damage.

4. Unusual Noises From Under The Hood:

Strange noises emanating from under your car hood should never be ignored.

They could be a sign of impending issues that, if not addressed, could lead to more significant mechanical failures.

Moreover, if you keep ignoring these warning signs, your car’s dashboard could display a lock symbol due to potential damage to other components.

Whether it’s a screeching sound, rumbling, or clunking noises, taking your vehicle to a trusted mechanic for a quick diagnosis is crucial.

Early intervention could potentially save you from costly repairs in the future.

Common Reasons For The Car With A Lock Symbol On The Dashboard

As a car owner, seeing a car with a lock symbol on the dashboard can be alarming.

However, knowing why this symbol appears can save you from unnecessary stress, time, and expenses. Here are some common causes for why your car key might malfunction.

1. Dead Battery:

A car is a complex machine; as with any machine, it is bound to experience malfunctions at some point. For example, one of drivers’ most common issues is dealing with a dead car battery.

You may notice a lock symbol on your dashboard when your car battery runs low or completely dies.

 Car With A Lock Symbol on the Dashboard

This symbol indicates that the car’s immobilizer system has been activated to prevent the engine from starting.

To fix this issue, you must address the battery problem by recharging or replacing it. Therefore, maintaining your car’s battery regularly is essential to avoid this inconvenience.

Don’t let a dead battery leave you stranded with a car that won’t start – keep track of your battery’s health and take prompt action when necessary.

2. Damaged Key Fob:

A damaged or worn key fob can cause many problems, including the lock icon on your car’s dashboard.

When a car does not let you use its features, it can annoy the driver. When this happens, it is important to address the problem immediately to avoid further complications.

Taking your car to a trusted mechanic can help you diagnose the issue and fix the key fob’s damage or wear and tear.

Taking action quickly can save yourself from added stress and expenses that might pile up if the problem remains unresolved.

3. Low Fuel Level:

Driving a car with a lock symbol on the dashboard can leave you feeling helpless and frustrated. If the fuel gauge reads empty, this is a common trigger for the lock symbol to appear.

It’s important to remember that this symbol does not indicate that your car is failing but rather that a security feature has been engaged to prevent unauthorized access.

If you are in this situation, the best action is to find a safe location to pull over and refuel your vehicle. Once you’ve added fuel, the lock symbol should automatically reset.

By keeping an eye on your fuel gauge and refilling it before it reaches empty, you can avoid the inconvenience of the lock symbol altogether.

4. Faulty Wiring:

Faulty wiring in a car’s computer system can lead to many problems that can be difficult to diagnose and potentially dangerous.

One issue that can arise from faulty wiring is the appearance of a lock symbol on the car’s dashboard.

This symbol typically indicates an issue with the car’s anti-theft system, which wiring problems in the computer system can cause.

It is imperative to address any wiring issues immediately to prevent further complications and ensure the vehicle’s and its passengers’ safety.

If you notice the lock symbol on your car’s dashboard, it’s best to take it to a trusted mechanic who can diagnose and resolve the problem.

How To Diagnose And Troubleshoot The Issue?

If you’re driving and notice a car with a lock symbol on the dashboard, then you may be experiencing some car troubles.

This symbol typically indicates that your car’s security system has been activated, and an issue prevents it from functioning correctly.

To diagnose and troubleshoot this problem, you’ll need to start by checking a few things. First, ensure your key fob’s battery isn’t low, and try replacing it if needed.

Then, check your car’s manual to see if there are any specific instructions on how to reset the security system.

If neither fixes the issue, you may need to take your car to a mechanic to diagnose and resolve the problem.

How to Diagnose And Troubleshoot The Issue?

While it can be frustrating to encounter car troubles, knowing how to diagnose and troubleshoot issues is key to keeping your vehicle running smoothly.

Advice To Avoid The Problem In The Future

When you see a car with a lock symbol on the dashboard, it can be a cause for concern.

This warning light indicates a problem with the car’s security system, which could lead to you being unable to start your vehicle or even leave you stranded.

It’s important to take preventative measures to avoid this issue. One advice is to regularly check your car’s battery to ensure the security system is getting the power it needs.

Another tip is to avoid leaving your car keys near any strong magnets or electronics, as this can disrupt the signal from your key fob to your car’s security system.

By taking these measures, you can avoid the frustration and inconveniences of a car security system malfunction.


Understanding why a car lock symbol appears on your dashboard and how to diagnose the issue properly can help prevent a stressful car maintenance situation.

Learning these common warning signs of an imminent lock mode error can help alert you when something could be wrong and should be addressed immediately.

Taking proactive steps, like scheduling regular maintenance, can also go a long way to keep the lock symbol from appearing.

It’s always best to consult a certified professional specializing in auto repair and maintenance if you are unsure or concerned about what this symbol indicates.

Terrence Hines

Leave a Comment