Frequently Asked Questions

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

• Verify vehicle condition: note performance changes, odd noises, or smoke and stop driving if the light is flashing.
• Check the gas cap: a loose or damaged cap is a common, simple cause—tighten it and see if the light clears after a few drives.
• Look for other dashboard warnings (ABS, oil, temperature) that indicate related issues.
• Avoid clearing codes yourself until the fault is diagnosed; resetting without repair can mask problems and void warranty-covered claims.
• Schedule a diagnostic at Nalley Toyota of Roswell—our factory-certified technicians use OEM tools for accurate diagnosis, which delivers immediate and long-term savings versus repeated visits to independent shops.

How long does a check engine light service take?

• Initial scan and code read: typically 20–45 minutes using Toyota diagnostic equipment.
• Comprehensive diagnosis: 1–3 hours depending on symptom complexity and required tests (road test, live-data capture, component testing).
• Simple repairs (e.g., gas cap, sensor replacement) often complete the same day; more involved repairs may require parts ordering and longer service time.
• We prioritize warranty-covered repairs at certified dealerships; having work done here ensures manufacturer coverage and avoids repeat visits.
• Nalley Toyota of Roswell often costs less than independent shops over time by preventing misdiagnosis, using OEM parts, and covering warranty repairs properly—saving you money now and later.

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

• Diagnostic scan fees typically vary; many dealerships apply a standard inspection fee that may be credited toward needed repairs.
• Minor fixes (gas cap, simple sensor replacement) are inexpensive; complex repairs vary by parts and labor.
• Exact cost depends on the root cause—our certified technicians provide a transparent estimate before any repair.
• Choosing Nalley Toyota of Roswell often delivers immediate and long-term savings: accurate OEM diagnosis avoids unnecessary parts swaps and repeat labor.
• Remember: warranty-covered repairs must be performed at a certified dealership to remain valid—our service center handles those repairs to protect your coverage and wallet.

What does it mean when the check engine light comes on in a 2026 Toyota Land Cruiser?

• It means the vehicle’s onboard diagnostics detected a fault in the engine, emissions, transmission, or related systems.
• Causes range from minor (loose gas cap, sensor fault) to serious (engine misfire, catalytic converter issues).
• Immediate code read identifies the subsystem; further tests determine exact repair steps and cost.
• Ignoring the light can lead to costly secondary damage—prompt dealer diagnosis helps avoid high long-term repair bills.
• Having Nalley Toyota of Roswell inspect your Land Cruiser ensures OEM tools, factory-trained techs, and warranty protection for any covered repairs.

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

• Common causes include a loose or faulty gas cap, oxygen sensor failure, ignition misfires, or emissions system faults.
• Loose gas cap is the simplest and most frequent cause—easy to correct but should be verified after tightening.
• Oxygen sensors and ignition components frequently trigger codes as the vehicle accumulates miles; timely replacement prevents catalyst damage.
• Early dealer diagnosis reduces the chance of expensive downstream repairs, delivering both immediate savings and better long-term value.
• Repairs covered by warranty must be completed at a certified dealership like Nalley Toyota of Roswell to preserve coverage and ensure proper repair documentation.