You can't just solderer the pin's YOU NEED A NEW RCM then send yours to tj for 100% rebuild I know of many on this forum who has done the repair with no avail ,,, then sent their rck to TJ and,,,,,, fixed.... for mercedes this is called a K40 for crossfire's it's RCM
if that does not work text matt if he can not fix it over the phone he will come to you find matt below.
https://www.crossfireforum.org/forum...air-shops.html jim