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patricia_huber1

Mercedes R Klasse Active Hood Fault

My 2011 Mercedes R Klasse with a gasoline engine is displaying an Active hood fault message. The airbag warning lamp is also illuminated. Diagnostics indicate a stored error and triggered spring actuators. Could a defective acceleration sensor be the culprit? The car has 282575 km on it.

4 comment(s)

david_lorenz6

I had a similar experience with my R Klasse concerning the active hood system fault. Check the hood latch and impact sensor. It might be related to the crash detection system.

patricia_huber1 (Author)

Were your symptoms identical, particularly the airbag warning lamp? Did the error message specifically mention the acceleration sensor, or was it a more generic system fault?

david_lorenz6

The airbag warning lamp was indeed illuminated. The error message was a general system fault related to the active hood, not specifically the acceleration sensor. I advise consulting a workshop for proper diagnosis.

patricia_huber1 (Author)

Thank you for the information. The issue was indeed a defective acceleration sensor, resulting in the active hood fault. Repair cost was 315€. Your experience helped me narrow down the potential causes before taking it in.

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