If your Honda’s Lane Keeping Assist (LKAS) isn’t working as it should, you’re not alone. This guide will help you troubleshoot the Lane Keeping Assist problem on Honda vehicles, from simple fixes to knowing when to visit the dealer.
It’s a fantastic system when it works, designed to reduce driver fatigue on long journeys. But when warnings flash or the steering wheel icon disappears, it can be confusing. Let’s figure out what’s going on and how to get it working again.
Troubleshooting Lane Keeping Assist Problem On Honda
Before you assume there’s a major fault, start with the basics. Many LKAS issues are caused by simple, overlookable things you can check yourself. This systematic approach can save you time and a potentially unnecessary trip to the shop.
Common Reasons Why LKAS Stops Working
Your Honda’s LKAS relies on a complex network of sensors and cameras. When it disables itself, it’s usually for one of these common reasons:
- Poor Lane Markings: The camera needs clear, visible lane lines. It struggles with faded, missing, snow-covered, or wet reflective lines.
- Bad Weather: Heavy rain, fog, snow, or glare from direct sun can blind the camera, temporarily disabling the system.
- Dirty Windshield: A smudge, bug splatter, or grime directly in front of the camera module (behind the rearview mirror) blocks its view.
- System Speed Requirements: LKAS typically only activates above a certain speed, usually around 45 mph. It won’t work in slow city traffic.
- Blinker is On: The system deactivates when you signal a lane change, as it assumes you are intentionally leaving the lane.
- Sharp Curves or Construction Zones: The system may not handle very tight curves or confusing temporary lane markings.
First Steps: The Driver’s Quick Checklist
Always start here. Go through this list everytime the system acts up.
- Check Your Speed: Ensure you are driving above 45 mph on a highway with clear lanes.
- Look at the Lines: Are the lane markings visible and not badly worn? The system needs at least one clear line.
- Clean the Windshield: Thoroughly clean the inside and outside of the windshield in the camera’s field of view. Use proper glass cleaner.
- Check for Dashboard Warnings: Is there a message like “Lane Keeping Assist Problem” or “Camera Obstructed”? A master warning light may also appear.
- Try the Button: Make sure you haven’t accidentally pressed the LKAS button on the steering wheel, turning it off. The indicator on the dash should be green when active.
Understanding the Dashboard Indicators
Your dashboard gives you clues. A solid green steering wheel icon means the system is active and assisting. A white outline icon means the system is on but conditions aren’t right for assistance (e.g., poor lines). A flashing amber icon means it’s prompting you to put your hands on the wheel. No icon at all usually means the system is turned off via the button.
Intermediate Troubleshooting Steps
If the quick checks don’t solve it, try these more involved steps. You’ll need to be a bit more hands-on.
1. Inspect and Calibrate the Camera
The camera module is located behind the windshield, near the rearview mirror. Look for any stickers, toll tags, or debris blocking it. If your windshield was recently replaced, the camera must be professionally recalibrated. An uncalibrated camera is a leading cause of permanent LKAS failure.
2. Check for Sensor Blockages
While LKAS primarily uses a camera, other Honda Sensing systems like radar cruise control use a radar sensor in the front grille. If that sensor is dirty or blocked, it can sometimes affect related systems. Clean the front emblem/grille area gently.
3. Perform a System Reboot
Like a computer, your car’s systems can benefit from a reboot. This clears temporary glitches.
- Park your car safely and turn it off.
- Open and close the driver’s door to ensure the vehicle electronics go to sleep.
- Wait at least 3-5 minutes.
- Start the car again and drive under normal highway conditions to see if LKAS reactivates.
4. Fuse and Electrical Check
A blown fuse can disable the system. Consult your owner’s manual for the fuse box location and which fuse corresponds to the ADAS (Advanced Driver Assistance Systems) or camera. Visually inspect the fuse to see if the metal strip inside is broken. Replacing a fuse is easy, but if the new one blows quickly, you have a deeper electrical issue.
When to Visit a Professional
If you’ve tried all the above and the Lane Keeping Assist problem on your Honda persists, it’s time for expert help. Here are the signs:
- Persistent dashboard warning messages that won’t clear.
- The system is completely unresponsive, even under perfect driving conditions.
- You’ve recently had windshield replacement or front-end repair work done.
- You suspect a software glitch that might need a dealer-level update.
A Honda dealership has the specialized diagnostic equipment to read fault codes from the ADAS system. They can determine if it’s a faulty camera module, a radar sensor issue, or a wiring problem.
Potential Repair Scenarios and Costs
Knowing what the dealer might say can help you prepare. Repairs can vary widely in cost.
- Windshield Camera Recalibration: If your windshield was replaced, calibration can cost $200-$600. Some insurance covers this.
- Camera Module Replacement: A failed camera unit is expensive, often ranging from $800 to $1500 for parts and labor.
- Software Update: Sometimes, a Technical Service Bulletin (TSB) exists for a known software bug. A dealer update may fix it for a minor labor charge, sometimes even for free under warranty.
- Wiring Harness Repair: Damage from rodents or corrosion can cause intermittent faults. Repair costs depend on the extent of the damage.
Always ask for a detailed diagnosis and quote before authorizing any work. Check if your vehicle is still under the factory new-car or CPO warranty, as these systems are often covered.
Preventive Maintenance for Your Honda Sensing
Taking good care of your Honda’s advanced features will keep them working reliably for years to come.
- Keep the Windshield Pristine: Regularly clean the inside and outside, especially the camera area. Use high-quality washer fluid.
- Avoid Aftermarket Modifications: Non-OEM windshields, especially those not marked for ADAS, can cause problems. Tinting or stickers near the camera are a bad idea.
- Address Warning Lights Promptly: Don’t ignore other warning lights. Issues with the braking system or vehicle stability can affect LKAS.
- Follow Service Schedules: While the system itself doesn’t need routine maintenance, keeping your car in good general health helps.
FAQ: Honda Lane Keeping Assist Issues
Why does my Honda LKAS keep turning off?
It’s likely due to environmental conditions like bad lane markings, weather, or a dirty windshield. If it happens constantly on clear roads, a sensor obstruction or calibration issue is probable.
Can I reset the Lane Keeping Assist system myself?
You can perform a basic reboot by turning the car off and waiting a few minutes. However, a true electronic reset or camera calibration requires dealer-level tools.
Is it safe to drive with the LKAS warning light on?
Yes, your car is safe to drive, but you will not have the assistance feature. Your conventional steering and braking remain fully functional. You should, however, get the system checked soon.
How much does it cost to fix Honda Lane Keeping Assist?
Costs range from a $100 software update to over $1500 for a new camera module. Recalibration after a windshield replacement is a common middle-cost fix.
Does a cracked windshield affect Lane Keep Assist?
Absolutely. Any crack, chip, or distortion in the camera’s field of view will disrupt its operation. Replacing the windshield will require a recalibration of the camera.
What’s the difference between LKAS and Road Departure Mitigation (RDM)?
LKAS provides gentle steering input to keep you centered. RDM is more reactive; it applies steering or braking if it senses you are leaving the lane without a signal. They work together but are distinct systems.
Troubleshooting this system starts with simple checks. Most often, the solution is as easy as cleaning your windshield or driving on a road with better markings. For persistent problems, a professional diagnosis is key. Understanding how the system works empowers you to use it effectively and get it repaired correctly, ensuring your Honda’s helpful technology is there when you need it on the road.