I have a cheap Mercedes code scanner.The 1st code is 2069(po700)(ETC control module) memory is fault. The second 5093 is Sporadically gear implausible or transmission slipping. The only thing that happened was the battery went dead and I put it on a charger. After it started it was limp home mode. I am not sure if I should buy a conductor plate or a transmission control module. Need advice.