Frequently Asked Questions

What does it mean when the check engine light comes on in a 2024 Mercedes-Benz GLS-Class?

• It signals that the vehicle’s onboard diagnostics has detected an issue with emissions, engine performance, or related systems. Issues can range from simple sensor alerts to fuel system or turbocharger faults.
• At Mercedes-Benz of Lynnfield our factory-trained technicians use OEM diagnostic equipment to identify the exact trouble codes and recommend the right repair, which protects long-term vehicle value and performance.
• Choosing our dealership often costs less than independent shops when you account for accurate diagnosis, genuine parts, warranty coverage, and long-term savings on fuel and repairs.
• If you want prompt attention, you can schedule service online; we also offer service financing so you can get repairs now and pay later.
• Remember: warranty-covered repairs must be performed at a certified dealership to maintain coverage and integrity of the repair record.

How long does a check engine light service take?

• Most initial diagnostics for the 2024 Mercedes-Benz GLS-Class take 30–90 minutes depending on code complexity and test procedures.
• If repairs are required, completion time depends on parts availability and the scope of work; our technicians work efficiently with OEM parts to minimize downtime.
• We prioritize transparency — you’ll receive an estimate and timeline before work begins, and we’ll explain immediate vs. long-term savings from quality repairs.
• To minimize wait, check our current offers under service specials and schedule service online.
• We also provide service financing options so you can authorize repairs right away and spread payments over time.

How much does a check engine light diagnostic cost for a 2024 Mercedes-Benz GLS-Class?

• Diagnostic fees vary by vehicle and complexity; at Mercedes-Benz of Lynnfield we provide competitive pricing and exceptional value for certified diagnostics.
• Because we use OEM tools and factory procedures, our customers typically save in the long run through accurate repairs and fewer repeat visits compared with some independent shops.
• Ask about our current service specials and available service financing to reduce out-of-pocket cost today while protecting your vehicle’s future performance.
• Any repairs covered under warranty must be completed at a certified dealership like Mercedes-Benz of Lynnfield to preserve coverage and vehicle history.

What is the most common reason for check engine light on a 2024 Mercedes-Benz GLS-Class?

• Common causes include oxygen sensor faults, loose or faulty gas caps, emission control issues, and turbocharger or fuel system sensor failures.
• Left unaddressed, these issues can reduce efficiency, raise emissions, harm performance, and increase repair costs over time; our certified team focuses on fixing the root cause to protect resale value.
• Book a prompt diagnosis to avoid compounding problems — you can schedule service online or check current offers via service specials.
• We also offer service financing to help you complete necessary repairs without delay.

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

• First, check for obvious issues like a loose or missing gas cap; then arrange a diagnostic scan to retrieve stored codes for accurate troubleshooting.
• At Mercedes-Benz of Lynnfield our technicians will perform a complete scan, interpret codes, and present a clear, benefit-focused repair plan emphasizing safety, longevity, and savings.
• Scheduling a prompt inspection often prevents larger repairs later; please schedule service online and review any available service specials to save immediately.
• Warranty repairs must be performed at a certified dealership to remain valid; we make the process easy and transparent, and service financing is available.