Frequently Asked Questions

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

• Check the gas cap—an improperly seated cap is a frequent cause and is simple to fix.
• Look for obvious signs: unusual noises, smoke, poor idle, or loss of power.
• Verify fluid levels and ensure there are no warning messages for hybrid systems.
• If the light persists, bring your 2023 Toyota Highlander Hybrid to Bill Estes Toyota for a fast diagnostic.
• Repairs covered under warranty must be done at a certified dealership to preserve coverage and proper repairs.

How much does a check engine light diagnostic cost for a 2023 Toyota Highlander Hybrid?

• Diagnostic fees vary, but typical dealership diagnostics range from about $100–$200 depending on testing needed.
• At Bill Estes Toyota, diagnostics are performed with OEM tools and often applied to the repair cost if you have the work done here.
• We often cost less than independent shops while delivering factory-trained technicians, genuine parts, and warranty compliance.
• Choosing the dealership offers immediate savings through accurate repairs and long-term savings by avoiding repeat failures.
• Remember: any repairs covered under warranty must be completed at a certified dealership to keep coverage valid.

What does it mean when the check engine light comes on in a 2023 Toyota Highlander Hybrid?

• It indicates the vehicle’s onboard diagnostics detected an issue with emissions, engine, hybrid system, or related sensors.
• Causes range from minor (loose gas cap, EVAP leak) to more serious (oxygen sensor, misfire, catalytic converter, hybrid electronics).
• For hybrids, some codes may relate to the hybrid battery or inverter and require specialized equipment to diagnose.
• Prompt dealership diagnostics help prevent secondary damage and maintain warranty eligibility.

What is the most common reason for check engine light on a 2023 Toyota Highlander Hybrid?

• The most common causes are a loose or damaged gas cap and faulty oxygen sensors or evaporative emissions leaks.
• Other frequent issues include misfires, worn spark plugs, and, over time, catalytic converter degradation.
• Hybrid-specific faults do occur and should be evaluated by factory-trained technicians to ensure correct repair.
• Bill Estes Toyota identifies root causes quickly, often saving you money now and preventing larger expenses later.

How long does a check engine light service take?

• Basic diagnostics can take 30–90 minutes depending on code complexity and required tests.
• Simple repairs like replacing a gas cap or oxygen sensor can often be completed the same day.
• More involved repairs—misfires, catalytic converter, or hybrid system work—may require parts ordering and additional time.
• At Bill Estes Toyota we use OEM parts and calibrated procedures; this ensures proper repairs, preserves warranty coverage, and reduces the chance of repeat visits.