Frequently Asked Questions

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

• Check for obvious issues first: a loose or missing gas cap can trigger the light and is easy to fix.
• Verify dashboard messages and listen for drivability symptoms — rough idle, stalling, or reduced power.
• Use a professional scan tool at our dealership to read fault codes; this provides a reliable starting point.
• If a repair is covered by warranty, remember it must be completed at a certified dealership to preserve coverage.
• Bring your 2021 Toyota RAV4 Prime to Nalley Toyota of Roswell for a fast, accurate inspection and clear next steps.

How much does a check engine light diagnostic cost for a 2021 Toyota RAV4 Prime?

• Diagnostics prices can vary, but our dealership offers transparent, competitive rates and frequent service specials; contact us for current pricing.
• Working with Nalley Toyota of Roswell often costs less than independent shops because our diagnostics are efficient and our technicians are factory-trained.
• Immediate savings come from accurate diagnosis and OEM parts that avoid repeat visits; long-term savings come from proper repairs that prevent costly cascading failures.
• Any repairs covered under warranty must be performed at a certified dealership to ensure coverage and proper documentation.
• Schedule a diagnostic appointment online or visit our service center to get an exact estimate for your vehicle.

What does it mean when the check engine light comes on in a 2021 Toyota RAV4 Prime?

• The check engine light indicates the vehicle’s computer has detected a fault — from simple emissions issues to engine misfires or sensor failures.
• Some causes are minor and inexpensive; others can affect fuel economy, performance, or emissions, so timely diagnosis matters.
• Our factory-trained technicians use OEM-grade scanners and parts to pinpoint the problem and provide accurate repair estimates.
• When a defect is covered by warranty, repairs must be completed at a certified dealership to keep your coverage valid and ensure proper repair records.
• Visit Nalley Toyota of Roswell for professional diagnostics, clear explanations, and service options tailored to your needs.

How long does a check engine light service take?

• Basic diagnostics typically take 30–60 minutes, depending on symptoms and whether test drives or additional inspections are needed.
• If further testing or parts are required, total repair time will vary; we provide timelines and keep you informed throughout the process.
• Nalley Toyota of Roswell prioritizes efficiency with factory-trained technicians and OEM tools to minimize time in the shop and reduce overall cost.
• When warranty repairs are necessary, completing them at our certified dealership ensures proper documentation and faster authorization.
• Call ahead or book online to confirm appointment availability and expected service duration for your 2021 Toyota RAV4 Prime.

What is the most common reason for check engine light on a 2021 Toyota RAV4 Prime?

• Common triggers include faulty oxygen sensors, loose gas caps, evaporative emissions leaks, ignition misfires, and failing catalytic converters.
• Many problems start as small, affordable repairs — addressing them quickly prevents larger failures and higher costs later.
• Our dealership’s diagnostics isolate the root cause quickly so you only pay for necessary repairs, often saving more than independent shops in the long run.
• Warranty-covered issues must be repaired at a certified dealership to maintain coverage and ensure OEM-compliant parts are used.
• Bring your 2021 Toyota RAV4 Prime to Nalley Toyota of Roswell for a precise diagnosis and cost-effective repair plan backed by factory training.