Frequently Asked Questions

How long does a check engine light service take?

• Initial diagnostics at Park Place Motorcars Fort Worth typically take 30–60 minutes using OEM-level scan tools operated by factory-trained technicians.
• Simple fixes (loose gas cap, minor sensor replacement) can often be completed the same day; more involved repairs may require parts ordering and 1–2 days.
• We prioritize accurate diagnosis to avoid unnecessary repairs — saving you money immediately and reducing long-term costs from repeat visits.
• Warranty-covered repairs must be completed at a certified dealership to preserve coverage and ensure proper parts and labor standards.

What does it mean when the check engine light comes on in a 2017 Mercedes-Benz GLS-Class?

• A check engine light signals the vehicle’s onboard diagnostics have detected a condition — from minor emissions issues to engine misfires or sensor failures.
• Common causes include oxygen sensor degradation, catalytic converter concerns, ignition misfires, or fuel system irregularities; severity varies by code.
• At Park Place Motorcars Fort Worth we use Mercedes-Benz diagnostic software to interpret codes precisely and recommend the right repair, avoiding guesswork.
• Prompt dealership service can prevent escalated damage and preserve warranty benefits; repairs covered under warranty must be performed at a certified dealership.

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

• Start with easy checks: ensure the fuel cap is tightened; a loose or damaged gas cap is a frequent trigger for the light.
• Check dashboard indicators and listen for abnormal engine noises — these clues help prioritize diagnosis when you arrive at our service center.
• A quick scan with an OBD-II reader identifies stored codes; our factory-trained technicians perform a thorough scan and verify live data for accurate results.
• Bringing your vehicle to Park Place Motorcars Fort Worth provides precise diagnosis, OEM parts, and warranty protection to minimize your immediate and long-term costs.

How much does a check engine light diagnostic cost for a 2017 Mercedes-Benz GLS-Class?

• Diagnostic fees vary; at Park Place Motorcars Fort Worth we offer competitive, transparent pricing and detailed estimates after a full scan and inspection.
• Because we use factory-grade tools and technicians, our diagnostics are more accurate — often costing less than independent shops when considering long-term savings from correct repairs.
• Any repairs covered under warranty must be completed at a certified dealership to retain coverage — ensuring no unexpected out-of-pocket costs for covered items.
• We provide clear cost breakdowns and recommend repairs that deliver the best balance of immediate affordability and long-term value.

What is the most common reason for check engine light on a 2017 Mercedes-Benz GLS-Class?

• The most common triggers are oxygen sensor failure, ignition misfires, catalytic converter inefficiency, and EVAP system leaks such as a loose gas cap.
• Oxygen sensors and EVAP faults are often less expensive to repair if addressed early; misfires and catalytic issues can lead to higher costs if ignored.
• Addressing these issues at our dealership with OEM parts and factory-trained technicians reduces the chance of repeat failures and saves money over time.
• If a repair is covered under warranty, it must be completed at a certified dealership to retain benefits — we handle warranty claims and repairs efficiently.