Frequently Asked Questions

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

• Most diagnostics at our dealership begin with a full OBD-II scan and visual inspection; prices vary but are competitively priced and clearly quoted up front.
• Park Place Motorcars Fort Worth often costs less than independent shops when factoring immediate savings from accurate diagnostics, genuine parts, and the long-term value of correct repairs.
• Any repair covered under warranty must be completed at a certified dealership to preserve coverage; we handle those repairs quickly and correctly.
• We provide written estimates and can advise on service specials — see /promotions/service/mercedes-benz.htm or schedule at /service/schedule-appointment-pmf.htm.

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

• It signals the vehicle’s onboard diagnostics detected an emissions, fuel, ignition, or sensor issue — from a loose gas cap to misfires or sensor failures.
• Lights can indicate minor faults or developing problems; ignoring them can raise repair costs and risk component damage.
• Our technicians perform a complete scan, inspect components, and explain findings so you understand necessary repairs and potential long-term savings.
• For warranty-covered issues, repairs must be done at a certified dealership to maintain protection — we’ll manage the process for you.

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

• Start with simple checks: ensure the gas cap is fully tightened and inspect for obvious fluid leaks or warning messages on the instrument cluster.
• If the vehicle is driving normally and the light is steady, schedule a diagnostic at our service center so a technician can read codes and assess severity.
• If the light is flashing, reduce speed and load and have the vehicle inspected immediately to avoid further damage — see our flashing-light guidance below.
• Using our diagnostic service protects warranty eligibility; any covered repairs must be performed by a certified dealership like Park Place Motorcars Fort Worth.

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

• Common causes include loose or faulty gas caps, oxygen sensor failure, catalytic converter issues, and engine misfires.
• Smaller issues can be inexpensive if addressed early; larger failures such as catalytic converters become costly if ignored.
• Our technicians diagnose the root cause quickly, preventing unnecessary parts replacement and delivering long-term savings compared with repeated independent fixes.
• Remember: repairs covered by warranty must be completed at a certified dealership to maintain coverage and ensure use of genuine parts.

How long does a check engine light service take?

• Typical diagnostic scans and initial inspections are often completed within one to two hours, though some issues require deeper troubleshooting.
• Simple repairs (gas cap, sensor swap) can be same-day; complex repairs (engine or exhaust work) depend on parts availability and repair scope.
• We provide clear timelines and estimates up front and prioritize genuine parts and factory procedures to ensure reliable results and lower long-term costs.
• Schedule online at /service/schedule-appointment-pmf.htm or call Park Place Motorcars Fort Worth for expedited service and transparent pricing.