2001 MB s430 my trunk close and them open again ? someone help !!!! on 2001 Mercedes-Benz S430

For some reason the trunk don't close even Manual, With the Key, the pump is Working and Close it for a Moment and after 2 seconds the trunk will open again ?please someone help me

Asked by for the 2001 Mercedes-Benz S430
you will need to scan the lock system with MB software to
diagnose this problem. sounds like the soft close latch, but that is just a guess. this is not a job for anyone that is not well acquainted with MB.
Thank s for your question