Frequently Asked Questions

What does it mean when the check engine light comes on in a 2016 Mercedes-Benz G-Class G 550?

• It signals the vehicle’s onboard diagnostics detected an issue—from emissions and sensors to engine or turbocharger concerns.
• At Mercedes-Benz of Lynnfield our certified technicians diagnose the exact fault using OEM-level scanners and explain repair options clearly.
• We often cost less than independent shops while delivering factory-trained expertise, OEM parts, and long-term savings through correct repairs and warranties.
• Repairs covered under warranty must be performed at a certified dealership to remain valid; we’ll verify coverage and advise next steps.
• To protect your vehicle and avoid escalation, please schedule service promptly or check our current service specials.

How long does a check engine light service take?

• Most diagnostics are completed within 45–90 minutes, depending on the complexity and whether road testing or additional checks are required.
• If repairs are needed, time varies by service—simple fixes can be same-day; more involved repairs may take longer but we provide transparent estimates up front.
• Mercedes-Benz of Lynnfield prioritizes quick turnaround using OEM parts, advanced tools, and streamlined workflows to minimize downtime.
• We offer amenities and clear communication throughout service; you can also schedule appointment online for a convenient arrival time.
• Ask about service financing to get repairs done now and pay later, protecting your vehicle’s longevity and resale value.

How much does a check engine light diagnostic cost for a 2016 Mercedes-Benz G-Class G 550?

• Diagnostic pricing can vary by fault, but Mercedes-Benz of Lynnfield provides competitive, transparent rates and often costs less than independent shops when total value is considered.
• Our fee covers OEM-grade scanning, technician labor, and a clear diagnostic report with recommended repairs and pricing.
• Immediate and long-term savings come from accurate diagnosis, OEM parts, and warranty-backed work that prevents repeat visits.
• Repairs covered under warranty must be done at a certified dealership to remain valid—our team will confirm coverage and your options.
• To book a diagnostic, schedule service online and review available service specials.

What is the most common reason for check engine light on a 2016 Mercedes-Benz G-Class G 550?

• Common causes include oxygen sensor faults, catalytic converter issues, loose or damaged gas caps, or turbo/sensor malfunctions on turbocharged engines.
• Because the G 550 uses a twin-turbo V8 and premium systems, early diagnosis at a certified dealer helps prevent costly downstream damage and preserves performance.
• Our technicians use factory diagnostic flows to pinpoint root causes so you pay only for necessary repairs, saving money over time.
• Warranty-covered repairs must be completed at certified dealerships—Mercedes-Benz of Lynnfield will verify and facilitate any covered work.
• Use our easy online form to schedule appointment and review current service specials before you arrive.

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

• Start with safety: if the light is flashing, reduce speed and stop as soon as it’s safe—a flashing light can indicate a severe misfire or condition that can damage the catalytic converter.
• For steady lights, check fuel cap seating then bring the vehicle to the dealer for an OEM diagnostic to read codes and determine severity.
• Mercedes-Benz of Lynnfield provides prompt diagnostics, certified technicians, and clear repair plans to minimize immediate risk and long-term costs.
• We offer service financing so you can address problems now and spread payments—protecting vehicle life and resale value.
• To protect your G 550, schedule service or review our service specials today.