Frequently Asked Questions

What is the most common reason for check engine light on a 2026 Toyota Highlander Hybrid?

• Loose or damaged gas cap is the simplest and most frequent cause — it can trigger an EVAP leak code and illuminate the light.
• Oxygen sensor or exhaust issues (P0420-style codes) are common and, if ignored, reduce fuel economy and risk catalytic damage.
• Misfires from spark or fuel issues can cause performance problems and long-term engine damage if not addressed.
• Hybrid-specific sensors or battery-system alerts are less common but important; factory-trained technicians can pinpoint hybrid codes quickly.

What does it mean when the check engine light comes on in a 2026 Toyota Highlander Hybrid?

• It indicates the vehicle’s onboard diagnostics detected an emissions, engine, or hybrid system issue; codes guide repair direction.
• The light can mean anything from a minor EVAP leak to something that affects drivability or emissions compliance.
• A steady light usually allows careful driving to a service center; a flashing light signals a serious fault and requires immediate attention.
• Prompt diagnosis at Nalley Toyota Stonecrest ensures accurate repairs, genuine parts, and correct hybrid-system handling.

How much does a check engine light diagnostic cost for a 2026 Toyota Highlander Hybrid?

• Diagnostics typically range from a complimentary quick scan during a service visit to a modest diagnostic fee for in-depth testing — exact pricing varies by issue.
• If parts or repairs are needed, our estimates include immediate and long-term savings compared with many independent shops; our factory-trained technicians help avoid repeat repairs.
• Warranty-covered repairs must be performed at a certified dealership to keep coverage valid; we handle warranty claims and use genuine Toyota parts.
• Ask about current service specials or diagnostic promotions at Nalley Toyota Stonecrest to reduce out-of-pocket cost.

How long does a check engine light service take?

• Basic code reading and inspection: typically 30–60 minutes for an initial diagnosis and estimate.
• Minor repairs (gas cap, sensor swap): often completed the same day, typically 1–3 hours depending on parts availability.
• Major repairs (catalytic converter, hybrid module service): can take a day or more; we provide clear timelines and status updates.
• Nalley Toyota Stonecrest often offers faster turnaround and competitive pricing while maintaining factory-trained technicians and genuine parts.

What is the first thing to check when the check engine light comes on?

• Confirm dashboard messages — sometimes the system shows a specific alert that helps prioritize action.
• Check the gas cap: make sure it’s tightened securely; a loose cap is a quick fix that often clears the light after a short drive.
• Note drivability: if the vehicle runs normally, schedule a prompt diagnostic; if the light is flashing or the vehicle hesitates, stop driving and contact us.
• Bring your 2026 Toyota Highlander Hybrid to Nalley Toyota Stonecrest for a full scan — repairs covered under warranty must be done at a certified dealership.