Frequently Asked Questions

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

• It signals the vehicle’s onboard diagnostic system has detected an issue — anything from a loose gas cap to emissions, ignition, or sensor faults.
• At Mercedes-Benz of Lynnfield we use factory-grade scanners to identify precise fault codes quickly, helping you avoid unnecessary repairs and long-term damage.
• Choosing our service often costs less than independent shops when you factor in accurate diagnosis, OEM parts, and work backed by certified technicians — delivering immediate and long-term savings.
• Repairs covered by warranty must be performed at a certified dealership to maintain coverage and protect resale value.
• To get prioritized attention, schedule service online or see current service specials.

How long does a check engine light service take?

• Most diagnostics are completed within 60–90 minutes; simple fixes like sensor replacement or loose connections may be same-day.
• Complex repairs that require parts or additional inspection are explained up front with estimated timelines and transparent pricing.
• Mercedes-Benz of Lynnfield prioritizes efficient turnarounds using OEM parts and factory-trained technicians to protect performance and longevity.
• We offer service financing so you can get service now and pay later, maximizing convenience and minimizing downtime for your vehicle.
• To reserve a convenient time, schedule appointment or review our latest service specials.

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

• Diagnostic pricing varies by issue, but our transparent estimates reflect accurate troubleshooting and lower long-term costs by preventing cascading failures.
• At Mercedes-Benz of Lynnfield we provide clear, itemized quotes and often offer better value than independent shops due to precise diagnostics and OEM replacements.
• Warranty repairs must be done at a certified dealership to ensure coverage — we’ll explain what’s covered and what’s not before any work begins.
• Ask about our service financing options to start repairs immediately and manage payment over time.
• Book online to secure a spot: schedule service. Check current offers at our service specials.

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

• Common causes include oxygen sensor faults, catalytic converter or EVAP system issues, ignition misfires, or mass airflow sensor problems.
• Left unaddressed, these issues can reduce fuel economy, increase emissions, and lead to expensive repairs — our goal is to find and fix the root cause quickly.
• Mercedes-Benz of Lynnfield uses OEM diagnostic procedures to deliver accurate fixes that protect engine performance and vehicle value.
• Warranty considerations are explained clearly; covered repairs should be performed at a certified dealership to maintain coverage.
• To protect your vehicle, schedule appointment and view our current service specials.

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

• Start with simple checks: ensure the gas cap is tight and inspect for obvious issues like low fluids or battery symptoms.
• Next, have a certified diagnostic scan to read fault codes — this prevents guesswork and avoids unnecessary repairs.
• Mercedes-Benz of Lynnfield provides fast, factory-level diagnostics and clear recommendations, helping you save both immediately and over time.
• Remember: repairs covered under warranty need certified-dealer completion to remain valid.
• If you want expert help, schedule service today and explore our service specials.