Frequently Asked Questions

How much does a check engine light diagnostic cost for a 2025 Mercedes-Benz S-Class?

• Typical diagnostic fees range from approximately $100–$250 depending on inspection depth and time; diagnostics may be covered under warranty if applicable.
• At Park Place Motorcars Fort Worth our factory-trained technicians use OEM tools to isolate issues accurately, helping avoid unnecessary repairs and saving you money long-term.
• Any repairs covered under warranty must be performed at a certified dealership to remain valid; this ensures immediate and long-term savings and full warranty protection.
• We recommend scheduling online to minimize wait time: Schedule Service or review current offers at our Service Specials.

What does it mean when the check engine light comes on in a 2025 Mercedes-Benz S-Class?

• The light signals that the vehicle’s onboard diagnostics have detected an emissions, engine, or emissions-system fault—ranging from minor to critical.
• Common triggers include misfires, sensor failures, evap leaks, or catalytic converter issues; a code scan identifies the exact system and severity.
• Driving with some codes can cause further damage or reduced efficiency; a certified diagnostic at our dealership protects your investment and warranty coverage.
• Using Park Place Motorcars Fort Worth ensures OEM procedures, software updates, and factory parts when repairs are required, often costing less than independent shops over time.

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

• Start with simple checks: ensure the fuel cap is tight and that you used the correct fuel—this vehicle requires premium unleaded.
• Look for obvious signs: unusual noises, smoke, loss of power, or fluid leaks before driving long distances.
• If symptoms are present, limit driving and schedule immediate dealership diagnostics to prevent collateral damage and to preserve warranty eligibility.
• Our technicians at Park Place Motorcars Fort Worth will perform a priority scan and advise on immediate steps and estimated costs.

What is the most common reason for check engine light on a 2025 Mercedes-Benz S-Class?

• Common causes include oxygen sensor faults, misfires from ignition or fuel issues, catalytic converter efficiency drops, and evap system leaks.
• Many early-stage faults may be inexpensive to repair if diagnosed quickly—delaying repairs can escalate costs and risk further component damage.
• Certified dealership diagnostics help identify root causes so only necessary repairs are performed, producing immediate and long-term savings.
• Remember: warranty-covered repairs must be completed at a certified dealership to preserve coverage and ensure OEM-grade parts and procedures.

How long does a check engine light service take?

• Simple diagnostics and resets can take under an hour; a full diagnostic and road test typically require 1–3 hours depending on symptoms.
• If repairs are needed, repair time varies by part availability and complexity; we provide transparent estimates and timelines before work begins.
• Scheduling through our service portal helps reduce wait times: Schedule Service.
• Choosing Park Place Motorcars Fort Worth delivers efficient service from factory-trained technicians, often lowering total ownership costs versus multiple independent interventions.