Frequently Asked Questions

How long does a check engine light service take?

• Diagnostic scan and inspection typically take 30–90 minutes depending on code complexity and test needs.
• Simple fixes (loose gas cap, minor sensor replacement) can often be completed the same day.
• More involved repairs (fuel system, catalytic converter, or engine repairs) require additional time for parts and testing.
• At Park Place Motorcars Fort Worth, factory-trained technicians prioritize accurate diagnosis to avoid repeat visits, saving you time and money.
• Repairs covered under warranty must be performed at a certified dealership to preserve coverage and ensure long-term savings.

What does it mean when the check engine light comes on in a 2018 Mercedes-Benz S-Class?

• The light signals a fault detected by the vehicle’s onboard diagnostics—ranging from emissions and sensor issues to ignition or fuel delivery problems.
• It can indicate anything from a loose gas cap to misfires that risk catalytic converter damage if ignored.
• Our diagnostic equipment reads manufacturer codes and pinpoints root causes, reducing unnecessary parts replacement and cost.
• Choosing Park Place Motorcars Fort Worth provides immediate and long-term savings through precise repairs, OEM parts, and factory-trained technicians.
• Remember: warranty-covered repairs must be completed at a certified dealership to remain valid.

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

• Start with easy checks: ensure the gas cap is tightened properly—this common issue can trigger an emissions code.
• Inspect routine items like fluid levels and visible wiring or connector damage before scheduling service.
• If the light persists, bring the vehicle in for an OBD-II scan so a technician can read stored codes and live data.
• At Park Place Motorcars Fort Worth we combine precise diagnostics with OEM parts to prevent unnecessary replacements and reduce lifetime cost.
• For any warranty concerns, have repairs performed here to keep coverage intact and benefit from certified repairs.

How much does a check engine light diagnostic cost for a 2018 Mercedes-Benz S-Class?

• Diagnostic fees vary by region and complexity; many issues require only a standard scan, while others need extended diagnostics and road testing.
• Park Place Motorcars Fort Worth often costs less than independent shops when factoring accurate diagnosis, OEM parts, and fewer repeat repairs.
• We offer transparent pricing and service specials—see our service specials page for current offers.
• Choosing dealership service ensures warranty continuity; any warranty-covered repair must be completed at a certified dealership.
• Schedule diagnostics online to get an accurate estimate specific to your vehicle and concern: /service/schedule-appointment-pmf.htm.

What is the most common reason for check engine light on a 2018 Mercedes-Benz S-Class?

• Common triggers include ignition misfires, oxygen sensor faults, catalytic converter efficiency codes, and fuel trim imbalance.
• Emissions-related faults and sensor failures are frequent—and if not addressed they can lead to higher fuel use and expensive downstream repairs.
• Our technicians use Mercedes-Benz diagnostic tools to identify the true root cause and avoid replacing parts unnecessarily.
• Repairing issues promptly at Park Place Motorcars Fort Worth delivers immediate savings and protects long-term vehicle value.
• Warranty-covered repairs must be done at a certified dealership to remain valid, preserving your protection and resale value.