Check Engine Light Flashing

A flashing check engine light on a 2019 Mercedes-Benz S-Class usually indicates a severe misfire or condition that can damage the catalytic converter and engine if driven. When the light flashes, stop driving if it’s safe and have the vehicle towed to Mercedes‑Benz of Lynnfield in Lynnfield, MA, to prevent costly downstream damage. Our technicians use Mercedes-Benz OEM diagnostic equipment to isolate the misfire source — ignition coils, fuel injectors, or sensor failures — and provide immediate guidance. Choosing our dealership means factory-trained technicians, guaranteed parts, and transparent estimates that often cost less over time than independent repairs because we prevent repeat work and avoid improper parts. We also offer service financing to help you address urgent repairs now and pay over time. Check our current service specials and schedule service online for same-day or next-available appointments; acting quickly preserves performance, fuel economy, and long-term value.

2019 Mercedes-Benz S-Class Check Engine Light Reset

Resetting the check engine light on a 2019 Mercedes-Benz S-Class is simple with the right tools, but clearing a code without repairing the underlying issue only masks a symptom and risks worse damage. At Mercedes‑Benz of Lynnfield we perform a full OEM diagnostic to read stored and pending codes, repair the root cause with factory parts, then verify the repair by clearing codes and confirming no reoccurrence. This approach preserves warranty coverage — repairs covered under warranty must be performed at a certified dealership — and provides lasting savings by avoiding repeat visits. Our service advisors explain findings and offer transparent pricing and repair options; many customers find our bundled service approach and genuine parts deliver better immediate value and lower total ownership costs than independent alternatives. You can review offers on our service specials page and schedule appointment online to get prioritized service from certified techs.

2019 Mercedes-Benz S-Class Check Engine Light Codes

Common codes for the 2019 Mercedes-Benz S-Class include P0300 (random/multiple misfires), P0420 (catalyst system efficiency low), P0171/P0174 (system too lean), and P0455 (EVAP system large leak). Ignoring these codes can lead to poor fuel economy, reduced performance, failed emissions tests, and expensive repairs — for example, a damaged catalytic converter can cost over $1,000 to replace. At Mercedes‑Benz of Lynnfield our certified technicians in Lynnfield, MA, diagnose codes quickly, explain repair costs and implications, and recommend OEM parts that restore factory performance. Because we focus on correct, durable repairs and warranty-backed parts, many customers see lower lifetime costs compared with independent shops. We also offer flexible payment options including service financing and maintain helpful amenities while you wait. Learn about current service specials and schedule service online to get started with trusted diagnostics and repairs.