Smart Key Won't Lock Trunk - Mercedes-Benz Forum

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post #1 of 2 (permalink) Old 05-20-2012, 04:38 PM Thread Starter
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Smart Key Won't Lock Trunk

Greetings, can anyone advise how to get my Smart Key to also lock the trunk when locking the doors?


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post #2 of 2 (permalink) Old 05-21-2012, 05:19 AM
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Need more information e.g. what MB do you have, does the key function normally otherwise, can you lock/unlock the trunk with your manual (blade) key?

My Smart key locks/unlocks the doors, trunk, and fuel filler door all at about the same time. Maybe the hose from the PSE module has come loose or is leaking. Or maybe the locking mechanism is frozen or corroded.

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