When you drive a Subaru and see the cruise control light blinking, it’s easy to worry. Is your car about to break down? Will you lose speed control on the highway? Many Subaru owners face this issue at least once, and it often comes with other dashboard warnings. This guide will help you understand why the blinking cruise control light happens, what it means, and how you can fix it. We’ll cover different Subaru models, practical advice, and even share some lesser-known details that most drivers miss. By the end, you’ll know how to deal with the blinking cruise control light confidently.
What Does The Blinking Cruise Control Light Mean?
The cruise control light in your Subaru is meant to tell you when the system is turned on. Normally, it glows steadily when cruise control is active. But when it starts blinking, it’s not just a gentle reminder—it’s a warning. Most often, a blinking cruise control light means there is a problem with the car’s engine, transmission, or emissions system. The car disables cruise control as a safety measure.
Why Does Subaru Disable Cruise Control When There’s A Problem?
Subaru’s computers are designed to keep you safe. If the engine or transmission has an issue, cruise control can be dangerous. For example, if the engine loses power, cruise control may not maintain the set speed. By shutting it off and blinking the warning light, Subaru makes sure you notice the problem and don’t use cruise control until it’s fixed.
Common Signs Accompanying The Blinking Light
Most Subaru drivers notice that the blinking cruise control light often comes with:
- Check Engine Light (usually solid or blinking)
- Traction control light
- ABS light
- Sometimes other warning lights
This combination signals a problem deeper than just cruise control. The car’s computer disables features to avoid further damage and keep you safe.
Key Causes For A Blinking Cruise Control Light
The reasons for a blinking cruise control light can vary, but some causes are more common. Let’s look at the main possibilities.
1. Engine Problems
- Misfire: If one or more cylinders are not firing correctly, the computer triggers the check engine light and disables cruise control.
- Sensor issues: Faulty sensors (like the oxygen sensor, mass airflow sensor, or crankshaft position sensor) can cause engine trouble, leading to the warning lights.
2. Transmission Issues
- Transmission fluid low or dirty
- Transmission control module problems
If the transmission is not working smoothly, Subaru disables cruise control to prevent sudden speed changes.
3. Emissions System Faults
- Loose gas cap: Surprisingly, a loose gas cap can trigger the check engine light and the blinking cruise control light.
- Evaporative emissions system leaks
4. Electrical And Sensor Failures
- Wheel speed sensors: If these fail, they affect ABS and traction control, leading to the blinking cruise control light.
- Brake light switch failure: This can prevent cruise control from working.
5. Temporary Glitches
Sometimes, a minor glitch in the car’s computer triggers the lights. Restarting the car or disconnecting the battery for a few minutes may reset the system.
Subaru Models Most Affected
Some Subaru models are more likely to show the blinking cruise control light due to their design or age. Here’s a comparison:
| Model | Years Most Affected | Common Related Issues |
|---|---|---|
| Subaru Outback | 2006–2014 | O2 sensors, gas cap, misfire codes |
| Subaru Forester | 2007–2016 | Brake switch, wheel sensors, EVAP |
| Subaru Impreza | 2008–2015 | Mass airflow sensor, catalytic converter |
| Subaru Legacy | 2005–2012 | Transmission issues, sensor failures |
| Subaru Crosstrek | 2013–2017 | Loose gas cap, wiring faults |
Older models are more likely to have sensor problems and wiring issues, while newer ones may show warning lights due to stricter emissions controls.
Diagnosing The Blinking Cruise Control Light
You don’t need to guess why your cruise control light is blinking. Here’s how you can diagnose the issue:
Step 1: Check Other Warning Lights
Look for other dashboard lights—especially the check engine light. The combination of lights can give clues about the problem.
Step 2: Use An Obd-ii Scanner
An OBD-II scanner plugs into a port under your dashboard. It reads trouble codes from the car’s computer. These codes tell you which system is causing the issue.
| Code Type | Example Codes | Possible Cause |
|---|---|---|
| Engine | P0301, P0171 | Misfire, lean condition |
| Transmission | P0700, P0715 | Transmission control, speed sensor |
| Emissions | P0442, P0457 | EVAP leak, loose gas cap |
| ABS/Traction | C0057, C0042 | Wheel speed sensor, brake switch |
You can buy a scanner for less than $50, or ask an auto parts store to check codes for free.
Step 3: Inspect Physical Components
- Check the gas cap—make sure it’s tight.
- Look at brake lights—if they don’t work, the brake light switch may be faulty.
- Inspect wiring and connectors for corrosion or damage.
Step 4: Restart The Car
Sometimes, turning the car off and on resets the warning lights. If they stay on, the problem is real.
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How To Fix A Blinking Cruise Control Light
Fixing the blinking cruise control light depends on what’s causing it. Here’s a practical breakdown:
1. Reset The Gas Cap
If the code is related to the gas cap, remove it and tighten it until you hear a click. Drive for a few days; the light should go off.
2. Replace Faulty Sensors
If the OBD-II scanner points to a sensor, you may need to replace it. Common sensors:
- Oxygen sensor
- Mass airflow sensor
- Wheel speed sensor
- Brake light switch
Most sensors cost between $30 and $120. Many can be replaced in under an hour.
3. Fix Engine Or Transmission Issues
- For misfire codes, check spark plugs, ignition coils, and fuel injectors.
- For transmission codes, check fluid levels and wiring.
4. Clear The Codes
After fixing the problem, use your OBD-II scanner to clear the codes. If the issue is resolved, the blinking cruise control light should disappear.
5. Visit A Mechanic
If you can’t find the problem or the light stays on, a Subaru-certified mechanic can help. They have advanced tools and experience.
Cost Of Repair: What To Expect
Repair costs depend on the issue. Here’s a quick comparison:
| Problem | DIY Cost | Mechanic Cost | Time to Fix |
|---|---|---|---|
| Loose gas cap | $10–$20 | $25–$40 | 5 minutes |
| Oxygen sensor | $40–$120 | $150–$300 | 1 hour |
| Brake light switch | $20–$40 | $80–$150 | 30 minutes |
| Wheel speed sensor | $50–$100 | $150–$250 | 1–2 hours |
| Transmission fluid | $30–$60 | $150–$300 | 1 hour |
Most common problems can be fixed cheaply, especially if you do it yourself. However, transmission or engine problems can cost more.
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Driving With A Blinking Cruise Control Light: Is It Safe?
You can drive your Subaru with a blinking cruise control light, but it’s not ideal. The car disables cruise control for safety, but the underlying issue may affect other systems. For example:
- Engine misfire: May cause rough driving or loss of power.
- Emissions leak: Usually safe, but may reduce fuel efficiency.
- Brake light switch failure: Could affect brake lights, which are crucial for safety.
If the check engine light is also on, get the car checked soon. If the car feels unstable, stop driving and call for help.
Real Subaru Owner Experiences
Many Subaru owners share their stories online. Here are some real-life examples:
- Outback owner: Noticed blinking cruise control and check engine light after filling up gas. Found the gas cap was loose; tightening it fixed the issue in two days.
- Forester driver: Had blinking lights and loss of cruise control. OBD-II scanner showed P0302 (misfire). Replaced spark plug and coil, solved the problem.
- Impreza owner: Saw cruise control light blinking after heavy rain. Found corrosion in wheel speed sensor connector. Cleaning it restored normal operation.
These examples show that the blinking light is often a simple fix, but sometimes it signals bigger problems.
Preventing The Blinking Cruise Control Light
You can avoid most blinking cruise control light issues by taking care of your Subaru:
- Check and tighten the gas cap every time you fill up.
- Inspect sensors and wiring during routine maintenance.
- Replace spark plugs and filters as recommended.
- Watch for changes in engine performance.
- Keep transmission fluid clean and topped up.
Most problems start small. Catching them early prevents bigger repairs.
Two Insights Most Drivers Miss
- Even minor issues can disable cruise control. Subaru’s computers are very sensitive. A loose gas cap or a single misfire can trigger the warning lights. Drivers often overlook these simple causes, thinking they need major repairs.
- Warning lights don’t always mean expensive fixes. Many drivers panic when they see blinking lights. But in many cases, the fix is cheap and quick—like tightening a gas cap or replacing a $30 sensor. Checking codes before visiting a mechanic can save you money.
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When To See A Mechanic
Some problems are easy to fix at home, but others need expert help. Go to a mechanic if:
- The car feels unsafe to drive.
- Warning lights stay on after repairs.
- You see multiple codes on your OBD-II scanner.
- The issue is related to the transmission or brakes.
Certified Subaru mechanics have the right tools and knowledge.
Subaru’s Approach To Dashboard Warnings
Subaru is known for reliable cars, but their dashboard warnings can feel overwhelming. The system is designed to alert you early and prevent bigger problems. The blinking cruise control light is part of this safety net. It’s a sign that something needs your attention, not just a random error.
If you want to learn more about Subaru’s dashboard warning system, check the official guide from Subaru.
Frequently Asked Questions
Why Does My Subaru Cruise Control Light Blink When The Check Engine Light Is On?
A blinking cruise control light with the check engine light means the car’s computer found a problem with the engine, transmission, or emissions system. The car disables cruise control for safety.
How Do I Reset The Cruise Control Light On My Subaru?
First, fix the underlying issue (like tightening the gas cap or replacing a sensor). Then, use an OBD-II scanner to clear trouble codes. Sometimes, restarting the car or disconnecting the battery for a few minutes resets the light.
Is It Safe To Drive With A Blinking Cruise Control Light?
Usually, yes, but the car may have reduced performance. If other warning lights are on or the car feels unstable, stop driving and get it checked.
Can A Loose Gas Cap Cause The Cruise Control Light To Blink?
Yes. Subaru’s computer system is sensitive. A loose gas cap can trigger emissions codes, causing both the check engine and cruise control lights to blink.
What Is The Most Common Fix For A Blinking Cruise Control Light?
The most common fix is tightening the gas cap or replacing a faulty sensor (like the oxygen sensor or brake light switch). Diagnosing with an OBD-II scanner helps find the exact cause.
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When your Subaru’s cruise control light starts blinking, don’t panic. It’s usually a sign that your car needs attention, but not always a costly repair. With the right approach—checking codes, inspecting simple parts, and knowing when to call a mechanic—you can handle the situation confidently.
Regular maintenance and a little knowledge go a long way in keeping your Subaru safe and reliable.