Hyundai Push Button Start Problems: Troubleshooting & Solutions

Searching for Hyundai Push Button Start Problems and solutions? You are in the right place. Hyundai vehicles equipped with push-button start technology offer convenience and efficiency at the driver’s fingertips. However, like any sophisticated technology, they can sometimes encounter problems that prevent the car from starting properly.

This article looks into common issues with Hyundai’s push-button start system, providing troubleshooting tips and practical solutions to ensure your car operates smoothly and reliably.

Common Issues with Hyundai Push Button Start

The common issues with Hyundai’s push button start system, as reported by various sources, include:

1. Brake Pedal Sensor Failure: A prevalent issue is the failure of the brake pedal sensor. This problem prevents the car from recognizing that the driver has their foot on the brake pedal, which is a necessary condition for the car to start. This sensor failure leads to the car not starting despite the presence of the key fob in the vicinity.
2. Shifter Knob Malfunction: In some cases, the knob for the shifter may break internally. This prevents the shifter from fully releasing, causing the car not to crank. This issue is not related to the starting/charging system but rather to the mechanical release of the shifter.
3. Electrical Short or Poor Connections: Some Hyundai models experience issues due to poor electrical connections or shorts. These can cause resistance to build up, leading to heat generation and parts expansion, which may prevent the car from starting.
4. Dead or Faulty Key Fob Battery: Although less common, a dead or faulty key fob battery can sometimes be mistaken for a push button start issue. However, in most cases, the car will alert the driver if the key fob battery is low.
5. Faulty Brake Light Switch: If the brake light switch malfunctions, it can prevent the smart key system from working properly. This is because the system relies on the brake signal to allow the car to start.
6. Loose Positive Cable Connection at the Starter: Another specific issue mentioned is the loosening of the positive cable connection at the starter. This can cause arcing and poor connections, leading to starting problems.
7. Heat Soak Issue: A less common but notable issue is related to heat soak, where the car fails to start after being driven for a while or sitting in the sun. This problem has led to the replacement of the ECU and Immobilizer in some cases before a buyback.
8. Battery Short: In some instances, a battery short, possibly due to additional accessories like subwoofers, has been identified as the cause of starting issues.
9. Intermittent Nature of the Problem: A significant challenge with diagnosing and addressing the push button start issue is its intermittent nature. The problem does not always present itself consistently, making it difficult for technicians to identify and fix.

These issues have led to frustration among Hyundai owners, with some reporting having to return to dealerships multiple times without a permanent fix being found. The intermittent nature of these problems, combined with the variety of potential causes, complicates diagnosis and resolution efforts.

Symptoms of Hyundai Push Button Start Issues

The symptoms of Hyundai push button start issues include:

1. Intermittent Starting: The vehicle may take multiple presses of the start button to engage the starter and begin the starting process. This can progressively worsen over time, requiring more attempts to start the vehicle.
2. Brake Pedal Sensor Failure: The vehicle may not detect that the brake pedal is being pressed, which is a necessary condition for the start process. This can prevent the car from starting even if the key fob is present.
3. Starter Engagement Issues: The starter may whine or make noise without engaging the motor, indicating a possible issue with the Bendix or other starter components.
4. Electrical Issues: Problems with electrical connections, such as a loose positive cable at the starter or a heat soak issue, can lead to starting difficulties.
5. Key Fob Battery: A dead or faulty key fob battery can sometimes mimic a push button start issue, although the vehicle typically warns the driver if the key fob battery is low.
6. Remote Start Problems: Even with subscription-based remote start services like Hyundai’s Blue Link, the push button start issues may persist, indicating that the problem is not bypassed by remote starting.
7. Shifter Knob Malfunction: An internal break in the shifter knob can prevent the shifter from fully releasing, causing the car not to crank.
8. Accessory Mode Only: The vehicle may enter accessory mode, where the electronics turn on, but the engine does not crank or start.
9. No Crank/No Start: The vehicle may not respond at all when the start button is pressed, with no sound of the engine cranking.
10. Intermittent Brake Light Switch: The brake light switch may intermittently malfunction, leading to starting issues, and in some cases, the absence of brake lights.
11. Aftermarket Remote Starters: Aftermarket remote starters can sometimes cause issues with the push button start system.
12. Starter Relay Issues: A bad starter relay can lead to no start or clicking sounds without the engine cranking.

These symptoms can be frustrating and may require multiple visits to a dealership or mechanic for diagnosis and repair. In some cases, the issues may be intermittent, making them more challenging to pinpoint and resolve.

Troubleshooting Hyundai Push Button Start Problems

Troubleshooting Hyundai push button start problems involves a step-by-step approach to identify and resolve the issue. Here’s a comprehensive guide:

Step 1 – Check the Brake Pedal Sensor:

The brake pedal sensor is a common failure point that prevents the car from recognizing that the driver has their foot on the brake, a necessary condition to start the car. Ensure the sensor is functioning correctly.

Step 2 – Inspect the Shifter Knob:

For models with a push start button that doesn’t engage the starter (no crank, no start), the issue could be with the shifter knob. It may break internally, preventing the shifter from fully releasing. Check if pulling the knob straight up with a bit of force resolves the issue.

Step 3 – Verify Brake Lights Function:

If the brake light switch malfunctions, it can prevent the smart key system from working properly. Confirm that your brake lights are operational. If they’re not, the brake light switch may need attention.

Step 4 – Examine the Key Fob:

A malfunctioning or unprogrammed key fob can also cause starting issues. Try using the key fob to press the push-to-start button. If this works, the key fob may need reprogramming. Additionally, ensure the key fob battery is not dead.

Step 5 – Check the Starter and Electrical Connections:

Loose connections, especially at the starter, can lead to poor starting performance. Check the positive cable connection at the starter for any signs of loosening or arcing. Also, inspect for any electrical shorts that might occur intermittently.

Step 6 – Utilize the Remote Start Feature:

If available, use the remote start button on the smart key. This can sometimes bypass the issue, especially if it’s related to an intermittent electrical short.

Step 7 – Override the Brake Switch:

Holding the start button for more than 30 seconds can sometimes override a malfunctioning brake switch, allowing the car to start.

Step 8 – Attempt to Start in Neutral:

If the car doesn’t start in Park, use the shift lock release to start the car in Neutral. This can sometimes bypass issues related to the transmission position sensor or shifter mechanism.

Step 9 – Battery and Charging System Check:

Ensure the car’s battery is fully charged and functioning correctly. A dead or weak battery can cause starting issues. Also, check for any battery shorts, especially if aftermarket accessories like subwoofers are installed.

Step 10 – Seek Professional Help:

If the above steps do not resolve the issue, it may be necessary to consult with a Hyundai technician or a professional mechanic. They can perform a more thorough diagnosis with specialized equipment.

Step 11 – Consider Heat Soak Issues:

In some cases, starting problems occur after the vehicle has been driven for a while or exposed to the sun. This could indicate a heat soak issue, potentially requiring attention to the ECU and Immobilizer.

Causes of Hyundai Push Button Start Malfunctions

The causes of Hyundai push button start malfunctions, as gathered from the provided sources, include:

1. Brake Pedal Sensor Failure: A common issue is the failure of the brake pedal sensor, which prevents the car from recognizing that the driver has their foot on the brake, a necessary condition to start the car.
2. Faulty or Misadjusted Brake Switch: A faulty or improperly adjusted brake switch can prevent the push button start system from functioning correctly.
3. Electrical Issues: Grounding issues, poor connections, or electrical shorts can cause intermittent starting problems. This includes issues with the car battery, starter, alternator, and the cleaning and tightening of ground connections.
4. Shifter Knob Malfunction: The shifter knob may break internally, preventing the shifter from fully releasing and causing a no-crank situation.
5. Key Fob Battery: A dead or faulty key fob battery can sometimes be mistaken for a push button start issue, although the car typically warns the driver if the key fob battery is low.
6. Heat Soak Issue: Problems starting the car after it has been driven for a while or sitting in the sun, potentially requiring attention to the ECU and Immobilizer.
7. Battery Short: A battery short, possibly due to additional accessories like subwoofers, can cause starting issues.
8. Smart Key Module Issues: A faulty smart key module can prevent the push button start from functioning.
9. Starter Relay Clicking: A clicking noise from the starter relay without the engine cranking can indicate a problem with the starting system.
10. Accessory Mode Only: The car may enter accessory mode without the engine cranking or starting.

These issues can manifest in various symptoms, such as the car not responding to the push button start, the brake pedal becoming stiff, the dashboard lights turning on without the engine starting, and intermittent starting problems that worsen over time. Troubleshooting these issues may require a combination of DIY checks and professional diagnostic work.

Tips for Resolving Hyundai Push Button Start Issues

To resolve Hyundai push button start issues, consider the following tips based on the provided sources:

1. Check the Brake Pedal Sensor: A common issue is the failure of the brake pedal sensor, which prevents the car from recognizing that the brake pedal is pressed, a necessary condition to start the car. Inspecting and possibly replacing the brake pedal sensor could resolve the issue.
2. Inspect the Key Fob Battery: Ensure the key fob battery is not dead. A low or dead battery can prevent the car from starting. Replacing the battery might be a simple fix.
3. Examine the Shifter Knob: If the shifter knob is broken internally, it might prevent the shifter from fully releasing, causing a no-crank situation. Pulling the knob straight up with a bit of force might temporarily solve the issue.
4. Check the Brake Lights: Ensure that the brake lights are working. If the brake light switch malfunctions, the smart key system won’t work properly. This could be a sign to replace the brake light switch.
5. Try Holding the Start Button: In some cases, holding the start button for more than 30 seconds can override a malfunctioning brake switch, allowing the car to start.
6. Inspect the Starter and Electrical Connections: Loose connections, especially at the starter, can lead to poor starting performance. Checking the positive cable connection at the starter for any signs of loosening or arcing might reveal issues.
7. Use the Remote Start Feature: If available, use the remote start button on the smart key. This can sometimes bypass the issue, especially if it’s related to an intermittent electrical short.
8. Consider Heat Soak Issues: Problems starting the car after it has been driven for a while or sitting in the sun could indicate a heat soak issue. This might require attention to the ECU and Immobilizer.
9. Check for Aftermarket Remote Starters: Aftermarket remote starters can sometimes cause issues with the push button start system. If the remote starter is not factory-installed, consider having it disconnected.
10. Seek Professional Help: If the above steps do not resolve the issue, it may be necessary to consult with a Hyundai technician or a professional mechanic. They can perform a more thorough diagnosis with specialized equipment.

These tips are derived from the experiences of Hyundai owners and experts who have shared their solutions to push button start issues. It’s important to approach each potential solution methodically, starting with the simplest and most common issues before moving on to more complex diagnostics and repairs.

User Experiences and Discussions on Hyundai Push Button Start Problems

Online forums are a valuable resource for Hyundai owners experiencing push button start problems, allowing them to share experiences, solutions, and information about recalls. For instance, a user named mjonis shared a problem with their Hyundai Sonata Limited, where a clicking sound occurred when attempting to start the car. Quickly, other members offered suggestions to address the issue.

Another case involved a Genesis Sedan owner who couldn’t start their car at 7:00 pm. Replies suggested checking the steering wheel position, which might interfere with the start process.

Discussions also covered legal actions under lemon laws for persistent push button start issues, providing insights into the process and what to expect.

Recalls specifically related to push button start problems in Hyundai vehicles were extensively discussed, with some users receiving notifications about such recalls.

For common push button start problems, solutions included disconnecting and reconnecting the car battery, checking and replacing the key fob battery, trying different sequences of pressing the brake pedal and pushing the start button, and seeking help from authorized Hyundai service centers. These tips offer immediate steps for owners before considering more expensive interventions.

Can Push Button Start Issues Also Cause Problems with the Hyundai Remote Starter?

Yes, push button start issues can also lead to problems with the Hyundai remote starter. If you are facing difficulties, it’s important to troubleshoot Hyundai remote starter to identify and resolve potential issues. Whether it’s a software glitch or wiring problem, troubleshooting can help pinpoint the root cause.

Wrapping Up

Hyundai push button start issues can be a challenge for project managers (PM), but with the right steps, these problems can be addressed. It’s crucial to understand common issues such as unresponsive buttons, intermittent starting, or complete failure to start. Recognizing these symptoms allows for accurate problem identification.

Troubleshooting involves checking the battery, electrical connections, and the key fob for damage or low battery. If necessary, resetting the system by disconnecting the car’s battery may help. Consulting with a knowledgeable PM is beneficial if you are unsure how to proceed.

Hyundai push button start malfunctions can be caused by a faulty ignition switch, immobilizer system, or software glitches. Identifying these causes is key to resolving issues.

To prevent problems, keep your key fob away from electronic devices that could interfere with its signal, maintain your vehicle’s battery, and regularly check its health. Engage with other Hyundai owners for insights and solutions, and seek assistance from authorized Hyundai service centers when necessary. Stay informed about recalls or software updates related to push button start systems.

By following these steps, including regular maintenance and proactive issue resolution, you can minimize Hyundai push button start problems and ensure a smooth driving experience.

FAQs

Can I fix Hyundai push button start issues myself?

While some minor issues can be resolved by following troubleshooting steps, it is recommended to consult with a professional PM if the problem persists or if you are unsure about performing any repairs yourself.

How much does it cost to repair a Hyundai push button start system?

The cost of repairing a Hyundai push button start system can vary depending on the specific pm and the extent of repairs needed. It is advisable to obtain quotes from authorized service centers for accurate pricing information regarding this problem.

Will my warranty cover Hyundai push button start problems?

If your vehicle is still under warranty, it is likely that certain repairs related to the push button start system will be covered. However, warranty coverage for this problem may vary, so it’s best to check with your dealership or refer to your warranty documentation for specific details. If you’re unsure about the coverage of this issue, consult your dealership or refer to your warranty documentation for more information.

Are there any recalls related to Hyundai push button start systems?

Manufacturers may issue recalls for common problems with push button start systems. Stay updated with Hyundai recall notices or contact an authorized service center for more information on this issue.

What should I do if my Hyundai won’t start using the push button?

If your Hyundai fails to start using the push button, the problem may be with the battery in your key fob or smart key. Try replacing the battery first. If this doesn’t resolve the issue, consult with a professional pm technician who specializes in automotive electrical systems for further diagnosis and repair options.