Frequently Asked Questions

What is the first thing to check when the check engine light comes on in a 2026 Toyota Highlander?

• Check basics first: ensure the gas cap is tight and undamaged—an unsecured cap is a common trigger.
• Look for obvious signs: smell of fuel, reduced power, or unusual noises can indicate a more urgent issue.
• Note dashboard behavior: steady light vs. flashing light suggests severity and next steps.
• Record recent events: fuel fill-ups, unusual fuel, or recent maintenance can help the technician diagnose faster.
• For warranty-covered concerns, remember repairs must be performed at a certified dealership to preserve coverage.

How long does a check engine light service take?

• Basic diagnostic scan: typically 30–60 minutes to read codes and perform initial checks.
• Simple fixes like a loose gas cap or minor sensor replacement: often completed the same day.
• Complex repairs (ignition coils, catalytic converter, wiring): can take several hours to a day, depending on parts availability.
• We prioritize quick, accurate diagnosis—factory tools and technicians speed the process while protecting long-term value.
• If covered under warranty, repairs must be done at a certified dealership; we coordinate parts quickly to minimize downtime.

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

• Oxygen sensor or catalytic efficiency issues are frequent causes and affect emissions and fuel economy.
• Loose or faulty gas caps often trigger EVAP system codes—an easy fix that we handle promptly.
• Ignition misfires (coils, spark plugs) and sensor failures can also illuminate the light and impact drivability.
• Ignoring these warnings can increase repair costs and reduce fuel efficiency—early diagnosis saves money.
• Our dealership uses factory diagnostics to identify true causes and ensure warranty compliance and long-term reliability.

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

• Initial diagnostic scans at our dealership are competitively priced; many scans are complimentary with repairs—ask about current service specials.
• Common fixes range widely: gas cap or software update ($0–$100), oxygen sensor replacement ($150–$600), ignition coil or spark plug work ($150–$500).
• Major items like catalytic converters can cost $500–$2,000+ if replacement is needed; timely diagnosis reduces the chance of escalation.
• Our dealership often costs less than independent shops when factoring immediate and long-term savings from correct repairs, factory parts, and fewer repeat visits.
• Remember: any warranty-covered repairs must be performed at a certified dealership to maintain coverage and avoid future expenses.