Many Subaru owners feel confused and even worried when they see the cruise control light blinking on their dashboard. This small flashing icon often appears alongside other warning lights, such as the check engine light. What does it mean? Is your car safe to drive? Do you need to rush to a mechanic, or is there a simple fix? In this guide, you’ll find clear answers about the cruise control blinking Subaru issue. We’ll explain why it happens, what you can do, and how to avoid bigger problems in the future. Whether you drive a Forester, Outback, Impreza, or another Subaru model, understanding this dashboard warning can save you time, money, and stress.
What Does Cruise Control Blinking Mean In A Subaru?
The cruise control system in your Subaru is designed for convenience—helping you maintain a steady speed on the highway. When the cruise control light starts blinking, it’s your car’s way of saying, “Something is wrong.” But the blinking itself does not always mean a cruise control problem.
In most cases, a flashing cruise control light in a Subaru means that the system has been disabled. This usually happens when the car’s computer (ECU) detects a fault somewhere—not just in cruise control, but possibly in the engine, emissions, or transmission systems.
Common Subaru Models Affected
Subaru has used this warning system for many years. You may see the blinking cruise control light in these models:
- Subaru Outback (2005–present)
- Subaru Forester (2004–present)
- Subaru Impreza (2006–present)
- Subaru Legacy (2005–present)
- Subaru Crosstrek (2013–present)
- Subaru WRX and WRX STI (2006–present)
The design and exact behavior of the warning lights may vary, but the core message is the same.
Why Does Subaru Link Cruise Control And Check Engine Light?
When the check engine light comes on, many Subaru models automatically disable the cruise control system, causing its light to blink. This is a safety feature. If your engine or emissions system has a fault, using cruise control could make things worse or hide a problem until it’s too late. By blinking, the cruise control light tells you the system is off and needs attention.
Main Reasons For Subaru Cruise Control Blinking
Understanding the possible causes behind a blinking cruise control light helps you act wisely. Here are the most common reasons:
1. Check Engine Light Is On
The most frequent trigger is the check engine light. This could be due to a loose gas cap, faulty oxygen sensor, or more serious engine problems.
2. Engine Or Emissions Faults
Subaru’s computer is sensitive. Problems like a failing catalytic converter, bad spark plugs, misfires, or leaks in the exhaust can trigger both the check engine and blinking cruise control lights.
3. Sensor Malfunctions
Modern Subarus have many sensors: mass airflow, camshaft position, crankshaft position, etc. If any of these fail or send odd signals, the car may shut off cruise control as a precaution.
4. Transmission Issues
Problems in the automatic transmission, such as a faulty solenoid or slipping gears, can cause related warning lights, including cruise control blinking.
5. Abs Or Traction Control Errors
Sometimes, issues in the anti-lock brakes (ABS) or traction control systems can indirectly trigger the cruise control light to blink, especially if they share wiring or sensors.
6. Electrical Or Wiring Problems
Damaged wires, corroded connectors, or a weak battery can confuse the car’s electronics and cause warning lights to flash.
7. Temporary Glitches
Occasionally, the computer might see a one-time error (like a brief sensor hiccup). In these cases, the lights may reset after a few drive cycles.
Example: 2015 Subaru Forester Owner
A 2015 Subaru Forester owner noticed the cruise control light blinking along with the check engine light after filling up with gas. It turned out the gas cap was not tightly closed. After tightening the cap and driving for a day, both lights went off.
This shows how a simple fix can sometimes solve the problem.
What To Do When Your Subaru Cruise Control Light Blinks
Many drivers panic when dashboard lights start flashing, but not every cause is urgent. Here’s a step-by-step approach to handle the blinking cruise control light:
1. Check For Other Warning Lights
Is the check engine, ABS, or any other warning light also on? This can help identify the main problem area.
2. Tighten The Gas Cap
A loose or faulty gas cap is a common cause. Open the fuel door, remove the cap, and screw it back on tightly. Drive for a day to see if the light resets.
3. Note Any Symptoms
Is your Subaru running roughly, hesitating, losing power, or making odd noises? If so, the problem may be serious.
4. Scan For Error Codes
Use an OBD-II scanner to read the error codes from your car’s computer. Many auto parts stores will do this for free.
5. Record The Codes
Write down the codes and look up their meanings. For example, P0420 is a common Subaru code for catalytic converter issues.
6. Decide If It’s Safe To Drive
If your car drives normally and there are no other symptoms, you can usually continue driving, but get it checked soon. If you notice reduced power, strange noises, or smoke, stop driving and seek help.
7. Reset The Warning Lights
After fixing the cause (like tightening the gas cap), some lights may reset on their own after a few trips. Others may need a mechanic or scan tool to clear them.
When To See A Mechanic Immediately
- The engine is misfiring, shaking, or making loud noises
- You see smoke or smell burning
- The car loses power or struggles to accelerate
- The check engine light is blinking rapidly (not just on)
- Other safety systems are disabled (like ABS or traction control)
Diagnosing The Problem: Tools And Tips
You don’t need to be a mechanic to start diagnosing the cruise control blinking Subaru issue. Here are simple tools and methods:
Using An Obd-ii Scanner
This affordable tool plugs into a port under your dashboard. It reads codes stored in the car’s computer. You can buy a basic scanner for $20–$50 or borrow one from an auto parts store.
Steps:
- Turn off the ignition.
- Plug the scanner into the OBD-II port (usually below the steering wheel).
- Turn the ignition on (engine off).
- Read the codes and write them down.
- Look up the codes online or in the scanner’s manual.
Common Subaru Trouble Codes Related To Cruise Control Blinking
| Code | Meaning | Possible Cause |
|---|---|---|
| P0420 | Catalyst System Efficiency Below Threshold | Bad catalytic converter, O2 sensors |
| P0455 | Evaporative Emission System Leak Detected | Loose gas cap, leaking hoses |
| P0301–P0304 | Cylinder Misfire Detected | Spark plugs, ignition coils |
| P0171 | System Too Lean | Vacuum leak, MAF sensor |
| P0137 | O2 Sensor Circuit Low Voltage | O2 sensor, wiring |
Visual Inspection Checklist
Sometimes, a quick look under the hood can reveal obvious issues:
- Check for loose hoses or disconnected wires
- Inspect the battery terminals for corrosion
- Look for cracked or missing vacuum lines
- Check for fluid leaks around the engine
If you’re not comfortable, a mechanic can do a full inspection.
Subaru-specific Diagnostic Tools
Dealers and specialized Subaru shops use advanced tools like the Subaru Select Monitor. These can read manufacturer-specific codes that basic scanners miss. This is helpful if the blinking cruise control light won’t go away after basic fixes.
How To Fix Cruise Control Blinking In Your Subaru
Fixing the blinking cruise control light depends on the cause. Here’s how you or a mechanic might resolve different issues:
1. Gas Cap Issues
If the gas cap is loose or faulty:
- Remove and retighten it until you hear clicks
- If the cap looks damaged, buy a new one (about $10–$20)
- Drive for several trips; the lights should reset
2. Oxygen Sensor Or Catalytic Converter
If you get codes like P0420 or P0137:
- Replace the faulty O2 sensor (costs $100–$300)
- For catalytic converter issues, repairs can be expensive ($1,000+), but sometimes the problem is just a sensor
3. Spark Plugs And Ignition Coils
Misfire codes (P0301–P0304) often mean:
- Replace spark plugs ($40–$100)
- Replace ignition coils if needed ($100–$200 each)
- Misfires should be fixed quickly to avoid engine damage
4. Vacuum Leaks Or Sensor Problems
- Inspect and replace cracked hoses
- Clean or replace the mass airflow sensor (MAF)
- Check for loose or unplugged connectors
5. Transmission Or Abs Issues
These are harder to fix at home:
- Have a mechanic diagnose with advanced tools
- Repairs may involve sensors, solenoids, or module replacement
Resetting The Warning Lights
After repairs, warning lights may clear themselves after several normal trips. If not, use an OBD-II scanner to reset them, or ask a mechanic. Never just reset the lights without fixing the cause, as the problem will return.
Cost To Fix Cruise Control Blinking Subaru
The cost of fixing this problem varies widely. Here’s a general comparison of common fixes:
| Problem | DIY Cost | Professional Cost |
|---|---|---|
| Loose gas cap | $0–$20 | $30–$50 |
| Oxygen sensor replacement | $100–$150 | $200–$350 |
| Spark plugs/ignition coils | $40–$250 | $100–$500 |
| Catalytic converter | $500–$1,200 | $1,000–$2,500 |
| Vacuum hose replacement | $10–$50 | $50–$150 |
| Electrical diagnosis | $0 (if DIY) | $80–$150 (diagnostic fee) |
Non-obvious tip: Sometimes, a battery nearing the end of its life can create odd electrical errors, causing warning lights. If your battery is over 4 years old, consider testing or replacing it.
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Preventing Cruise Control Blinking In The Future
While some causes are random, many cruise control warning light issues can be avoided with good habits:
- Tighten the gas cap securely after every fill-up
- Maintain regular service: Oil changes, spark plugs, air filters
- Inspect hoses and wires during routine checks
- Use quality gasoline to reduce carbon buildup
- Replace the battery every 4–5 years
- Fix small issues quickly before they trigger bigger problems
Insight: Many owners ignore the first warning light, hoping it will go away. In Subarus, even minor faults can disable cruise control and trigger other systems. Early attention saves money.
Subaru Cruise Control Blinking: Myths And Misunderstandings
Drivers often make wrong assumptions about dashboard warning lights. Here are a few myths:
- Myth: Blinking cruise control means the cruise system is broken.
Truth: It usually means another system has a fault, and cruise control is off as a precaution.
- Myth: You must go to a Subaru dealer for all repairs.
Truth: Many repairs, such as replacing a gas cap or sensor, can be done at home or at any good mechanic.
- Myth: Disconnecting the battery will always reset the lights.
Truth: Sometimes this works, but if the problem remains, the lights will return.
- Myth: Blinking cruise control is always urgent.
Truth: It depends on the cause. Some fixes are simple, others need fast attention.
Credit: www.youtube.com
When Is It Safe To Ignore The Blinking Cruise Control Light?
Not every warning requires immediate repair. If your Subaru drives normally, with no unusual sounds or smells, and only the cruise control and check engine lights are on, you can usually keep driving for a short time. But you should still find the cause soon.
Ignoring the problem for weeks can lead to more expensive repairs.
How Subaru’s Warning System Compares To Other Brands
Subaru links its systems more tightly than some brands. For example, in many Toyotas or Hondas, a check engine light won’t affect cruise control. But in Subarus, the car disables cruise control at the first sign of trouble for safety.
| Brand | Check Engine Light Disables Cruise Control? | Common Causes Linked? |
|---|---|---|
| Subaru | Yes | Engine, emissions, sensors |
| Toyota | No (in most models) | Engine, sensors |
| Honda | Rarely | Engine |
| Ford | Sometimes | Engine, transmission |
This approach can feel strict, but it helps owners catch problems early.
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Where To Find Reliable Help
If you’re unsure, it’s always wise to visit a mechanic with Subaru experience. You can also find advice and support from Subaru owner forums, YouTube tutorials, and the official Subaru website. For technical explanations, see the Subaru Wikipedia page.
Frequently Asked Questions
What Does It Mean If My Subaru’s Cruise Control Light Is Blinking But The Car Drives Fine?
This usually means there’s a fault detected by the car’s computer (often in the engine or emissions system), and cruise control has been disabled as a safety step. Even if the car feels normal, have the codes checked soon to avoid bigger problems.
Will The Cruise Control Blinking Light Go Away On Its Own?
If the cause is minor (like a loose gas cap) and you fix it, the light may reset after a few drive cycles. If the fault is still present, the warning will remain until the problem is repaired and the code cleared.
Can I Use Cruise Control When The Light Is Blinking?
No, Subaru disables the cruise control system when this light is blinking. You will not be able to set or use cruise control until the fault is fixed and the warning lights are off.
Is It Safe To Drive My Subaru With The Cruise Control Blinking?
If there are no other symptoms (like rough running, smoke, or loud noises), it’s usually safe for short drives. However, you should diagnose and fix the issue soon. If the check engine light is blinking rapidly or there are other warning signs, stop driving and seek help.
How Do I Reset The Cruise Control Blinking Light In My Subaru?
First, fix the cause of the warning (such as tightening the gas cap or replacing a faulty sensor). After repairs, the light may reset itself after a few trips. You can also use an OBD-II scanner to clear the codes, or have a mechanic do it.
Never just clear the codes without fixing the problem.
Understanding the cruise control blinking Subaru issue puts you in control of your car’s safety and reliability. With smart steps and early action, you’ll keep your Subaru running smoothly for many miles to come.