janjones1
Active hood fault and airbag light issue
Summary of the thread
A 2013 Mercedes SL is experiencing an "Active hood fault" message and an airbag warning light, with error memory indicating triggered spring actuators. A defective acceleration sensor is suspected as the cause. Another individual with a similar issue suggests checking the impact sensor, as it can affect the crash detection system. The problem was resolved by replacing the acceleration sensor, which cleared both the active hood fault and the airbag light.
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4 comment(s)
janjones1 (community.author)
The hood itself seems fine, it's just the warning message and the airbag light that are the problem. The spring actuators being triggered is what's throwing me off. How did you pinpoint the impact sensor? Was it a similar situation with the hood latch?
thomassturm1
Yep, same deal. Hood looked normal. The error codes pointed to the impact sensor. It's like a domino effect with the car electronics these days. Honestly, with the airbags involved, I'd get it checked out by a workshop. Not worth messing with that system yourself.
janjones1 (community.author)
Thanks for the advice. I took it to a workshop, and you were spot on. It was indeed the acceleration sensor. Replacing it sorted out the active hood fault and the airbag light. Repair cost was pretty close to my estimate. Appreciate the help!
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MERCEDES
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SL
thomassturm1
Sounds familiar. I had something similar happen on my SL. Check the impact sensor; sounds like it might be faulty. It messes with the whole crash detection system. Is the hood actually popped or just the warning?