Frequently Asked Questions

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

• Check the gas cap: a loose or damaged cap is a very common, low-cost cause and often clears the light after a few drive cycles.
• Scan for codes: a diagnostic scan at our dealership quickly identifies stored trouble codes and pinpoints the system affected.
• Look for symptoms: reduced power, rough idle, smoke, or strange noises indicate higher urgency and possible towing.
• Verify basic fluids: low oil or coolant may trigger warnings; our technicians will inspect levels as part of the diagnosis.
• Remember warranty rules: repairs covered under warranty must be completed at a certified dealership to protect coverage and provide long-term savings.

What does it mean when the check engine light comes on in a 2024 Toyota Highlander Hybrid?

• It signals that the vehicle’s onboard diagnostics detected a fault in emissions, engine, transmission, or hybrid systems.
• Not all codes mean immediate danger—some indicate emissions or sensor issues while others warn of serious engine problems.
• Our factory-trained technicians use OEM-grade scanners to interpret codes accurately and recommend precise repairs.
• Choosing Nalley Toyota Stonecrest often costs less than independent shops because we combine competitive pricing with factory expertise, reducing repeat visits and long-term expense.
• Any warranty-covered repair must be performed at a certified dealership to maintain coverage and ensure genuine parts and documented service.

What is the most common reason for check engine light on a 2024 Toyota Highlander Hybrid?

• Common causes include a loose gas cap, oxygen (O2) sensor failure, catalytic converter issues, or ignition misfires—many are emissions-related.
• Sensor failures and lean/rich conditions can affect fuel economy and performance if left unaddressed.
• Our dealership detects root causes quickly with OEM diagnostic tools to avoid unnecessary parts replacement and save you money.
• Prompt dealer service prevents escalation—ignoring codes can lead to costly catalytic converter or engine damage down the road.
• Warranty considerations: repairs covered under warranty must be done at a certified dealership to preserve benefits and long-term savings.

How much does a check engine light diagnostic cost for a 2024 Toyota Highlander Hybrid?

• Diagnostic fees vary, but a typical dealer scan falls in the range of approximately $90–$150; fees are often applied toward repairs when you proceed with service.
• Our pricing is competitive and designed to deliver immediate and long-term savings compared with repeat visits to independent shops.
• Factory-trained technicians and OEM tools provide accurate diagnosis that minimizes unnecessary repairs and reduces total ownership cost.
• If a repair is covered under warranty, it must be completed at a certified dealership to ensure coverage and avoid out-of-pocket expense.
• We offer transparent estimates before work begins so you can weigh options and make an informed choice with confidence.

How long does a check engine light service take?

• Initial diagnostic scans typically take 30–90 minutes depending on symptoms and code complexity.
• Simple fixes like tightening a gas cap or replacing a sensor can often be completed the same day; more involved repairs may require parts ordering and a longer turnaround.
• Our service team provides accurate time estimates up front and prioritizes safety and thoroughness to prevent return visits.
• Choosing the dealership means access to OEM parts and factory-trained technicians who resolve issues correctly the first time—saving time and money in the long run.
• Warranty-covered work must be performed at a certified dealership to protect your coverage and ensure all repairs are documented properly.