Staff Answer
Aug 21, 2026 - 01:39 PM
Automatic shutdown troubleshooting and system restriction management on the 2023 Mercedes S-Class are governed by auxiliary battery voltage levels, engine temperature thresholds, and safety sensor inputs.
How to Fix It:
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Verify Seatbelt and Doors: Ensure your driver's seatbelt is securely buckled and all doors are fully closed, as open restraints disable the auto-stop feature.
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Check Operating Temperatures: Confirm that the engine and cabin climate control have reached their target operating temperatures, since extreme heat or cold prevents shutoff.
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Inspect Auxiliary Battery: Test the auxiliary backup battery health, as low voltage is the most common reason the ECO start-stop system stops engaging.
For troubleshooting codes and feature guides, visit the complete https://www.autouserguide.com/mercede...
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