Frequently Asked Questions

What does it mean when the check engine light comes on in a 2023 Mercedes-Benz G-Class?

• It signals a detected issue from the vehicle’s onboard diagnostics — anything from a loose gas cap to emissions, sensor, or engine problems. Our factory-trained technicians at Mercedes-Benz of Sudbury in Sudbury, MA quickly assess codes and explain findings in plain language.
• We often provide more value than independent shops by combining accurate diagnostics, OEM parts, and documented repairs that protect long-term vehicle health and resale value — delivering immediate and long-term savings.
• Repairs covered under warranty must be performed at a certified dealership to preserve coverage and proper parts traceability; we’ll confirm warranty eligibility and recommended next steps.
• To get started, schedule service online or review our current service specials to maximize savings.

How long does a check engine light service take?

• Diagnostic times vary but most engine light scans and initial code reports are completed within an hour; follow-up repairs depend on findings. Our certified team prioritizes accuracy and efficiency to minimize your downtime.
• We communicate estimated timelines before work begins and use OEM procedures to avoid repeat visits — saving time and money over the long run.
• Need flexibility? We offer comfortable waiting areas, loaner options when available, and service financing so you can get service now and pay later.
• Ready to reserve a slot? Click to schedule appointment or check current service specials.

How much does a check engine light diagnostic cost for a 2023 Mercedes-Benz G-Class?

• Diagnostic pricing reflects dealer-grade equipment and technician expertise. At Mercedes-Benz of Sudbury we offer competitive, transparent pricing that often costs less than independent shops while delivering factory-level service and genuine parts.
• An accurate dealership diagnosis reduces the risk of unnecessary repairs and preserves vehicle value — providing both immediate savings and long-term protection.
• We will provide a clear estimate before any repairs. Repairs covered under warranty must be completed at a certified dealership to maintain coverage.
• To book diagnostics, schedule service or view our current service specials for potential discounts.

What is the most common reason for check engine light on a 2023 Mercedes-Benz G-Class?

• Common causes include faulty oxygen sensors, catalytic converter concerns, loose fuel caps, or intermittently failing ignition components. Our certified technicians use OEM-grade scanners to pinpoint the exact cause and recommend the most cost-effective repair.
• Fixing issues promptly prevents further damage and higher repair bills; dealing with problems early at our dealership can save you money now and in the future.
• Warranty-covered repairs must be done at a certified facility; we’ll confirm coverage and necessary documentation when you arrive.
• Book a time to inspect the vehicle by clicking schedule service or review available service specials.

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

• Start with obvious items: ensure the gas cap is tight. If the light remains, bring your 2023 Mercedes-Benz G-Class to Mercedes-Benz of Sudbury for a dealer-grade scan — we capture codes and interpret OEM-specific data.
• Our team explains findings, provides transparent pricing, and recommends only necessary repairs using OEM parts to protect performance and longevity.
• We offer service financing so you can address immediate repairs now and pay over time while preserving vehicle health and warranty protection.
• To proceed, schedule service or check our service specials before your visit.