Removed HV battery to clean bus bars

I removed HV battery to clean corrosion on bus bars. Reinstalled HV battery and no red triangle, but when I press the start button I hear a loud clicking from area of HV battery, also when I press the start button to shut off I hear the same loud clicking. Any ideas or suggestions?

Edit: OK looks like the solution is to maybe reinstall all the upholstery and sound deadening panels etc.