Frequently Asked Questions

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

• Secure the gas cap: a loose or damaged cap is the simplest and most common cause of an illumination.
• Look for obvious symptoms: reduced power, rough idle, unusual noises, or smoke—note these for the technician.
• Check fluids and dashboard indicators: low oil or coolant can coincide with engine warnings.
• If the light is flashing, stop driving and have the vehicle towed to a service center to avoid further damage.
• For a prompt, reliable diagnosis and any warranty-covered repairs, bring your 2006 Toyota 4Runner to Nalley Toyota of Roswell in GA.

What does it mean when the check engine light comes on in a 2006 Toyota 4Runner?

• An illuminated check engine light signals the vehicle’s computer detected a fault in emissions, ignition, fuel delivery, or engine systems.
• Common triggers include sensor failures (oxygen, MAF), misfires, catalytic efficiency issues, or an open fuel cap.
• Severity ranges from minor (easy repairs) to critical (risk of engine or catalytic converter damage).
• Accurate diagnosis requires an OBD-II scan; our factory-trained technicians at Nalley Toyota of Roswell use OEM-grade tools for precise results.

How much does a check engine light diagnostic cost for a 2006 Toyota 4Runner?

• Diagnostics typically start with an OBD-II scan; many dealerships offer a competitive flat fee or complimentary scan during a service visit.
• Nalley Toyota of Roswell often costs less than independent shops while delivering factory-trained techs and OEM parts, creating immediate and long-term savings.
• After diagnosis, we provide a clear estimate for repairs; warranty-covered work must be performed at a certified dealership to remain valid.
• Choosing the dealership reduces the risk of repeat repairs and protects resale value with documented, factory-level service records.

How long does a check engine light service take?

• Basic diagnostics and a simple fix (like tightening or replacing a gas cap) can take 30–60 minutes.
• Sensor replacements or multi-point diagnostics usually require 1–3 hours depending on parts availability and the required repair scope.
• Complex issues or parts-ordered repairs may take longer; we provide timelines up front and work to minimize your downtime.
• Nalley Toyota of Roswell uses factory-trained technicians and OEM parts to ensure repairs are done right the first time, saving you time and money long term.