Frequently Asked Questions

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

• Confirm the gas cap is tight and intact; a loose or damaged cap commonly triggers the light.
• Look for obvious signs: unusual smells, smoke, loss of power, or dashboard warnings that indicate urgency.
• If driving feels normal, schedule a diagnostic — many issues are minor but should be scanned promptly.
• Bring the vehicle to Nalley Toyota of Roswell so factory-trained technicians can run a full OBD-II scan and protect any warranty coverage.

How long does a check engine light service take?

• Initial diagnostics typically take 30–90 minutes to pull codes, perform live-data checks, and test related systems.
• Simple repairs, like replacing a sensor or tightening the gas cap, may be completed same day; complex repairs require more time for parts and testing.
• We prioritize efficiency with OEM procedures and diagnostic equipment, often reducing downtime compared with independent shops.
• Warranty-covered repairs must be completed at a certified dealership; our process protects your vehicle and ensures accurate, durable repairs.

What does it mean when the check engine light comes on in a 2016 Toyota RAV4 Hybrid?

• It indicates the vehicle’s onboard diagnostics detected a condition outside normal parameters — anything from a loose gas cap to engine misfire.
• Codes stored in the computer point technicians to systems such as emissions, fuel, ignition, or hybrid components.
• Immediate scanning at a certified dealer gives a precise readout and prevents small problems from becoming costly failures.
• Nalley Toyota of Roswell provides transparent diagnostics and explains immediate and long-term savings from prompt, factory-standard repairs.

How much does a check engine light diagnostic cost for a 2016 Toyota RAV4 Hybrid?

• Diagnostic fees commonly range from roughly $90 to $150, depending on tests required; exact pricing is provided up front.
• At Nalley Toyota of Roswell you’ll often pay less than independent shops while getting factory-trained techs, OEM parts, and accurate fixes that reduce repeat visits.
• Choosing our dealership saves money long term by preventing collateral damage and preserving warranty eligibility — repairs covered under warranty must be performed at a certified dealership.
• Check our service specials for discounts and schedule an appointment online to lock in fast, cost-effective diagnostics.

What is the most common reason for check engine light on a 2016 Toyota RAV4 Hybrid?

• A loose or faulty gas cap and EVAP system leaks are frequent, inexpensive to fix causes that trigger the light.
• Worn oxygen sensors or failing catalytic efficiency are common and, if neglected, lead to higher fuel use and expensive repairs.
• Misfires, ignition faults, or sensor failures can escalate quickly; early dealership diagnosis prevents engine or emissions system damage.
• Our technicians identify root causes with OEM scans to avoid unnecessary parts replacement and deliver immediate and long-term savings.