Hello and Welcome! I'm Billy and i will assist you with this. Feel free to ask if further info is needed.
My apologies for the delay, thank you for your patience.
First, you need to try to extend the roll bar mechanically (manually), as it seems to be stuck causing the clicking and the warning lights (it does make the airbag light flicker as well, however other faults could exist). Here is the detailed procedure:click here for details
This is not an easy task, read the instructions carefully, and proceed if you are sure you can handle this. This should take care of the warning lights, and if they stay on, then you need to hook on to a MB scan tool, to retrieve the fault codes, which should point out the faulty component or circuit to be checked accordingly.
As for the wipers, they have a motor and linkages. One of the linkages (or the teeth on the blade) are either loose or worn, causing the wipers to be out of synch. You need to remove the black plastic cover under the windshield in the engine compartment, to gain access to the linkages, and check which one is loose, or worn, and replace accordingly.
Thank you for your trust! Get back to me if you need more info...Thank you in advance for the positive rating...