03/09/2026
Man oh man! This was a tough one!!! So what we have here is a 01 Mercedes s600 v12 that was towed in for a no start. Now this car has a story , it had been through just about every “euro specialist” in town including the factory it came from , Mercedes, and unfortunately nobody was able to figure it out they either wanted to load the parts cannon or told him to sell it / part it out . For those of you that know me I take things like that as a “oh yeah? Watch this” 😆 we were able to get the car fired up within about 45 minutes to an hour with no new parts ( so much for being specialists 😂) BUT I was by passing a lot of systems and jumping power in multiple spots so that is not fixing it but we now knew the car ran great. Next step was getting this power issue sorted so what I was happening was this car was getting no power to the engine bay and it wanted to blow fuses we also couldn’t check codes as half the modules were down and the couldn’t connect to it . So what I did was again jump power in a bunch of places to simulate like the car actually had all these modules working so that I could actually hook a scan tool up and get some codes . I was able to get it down to one circuit which was the can bus hi and lo communication for the passenger front Sam unit, fuse box , one of the ECUs and the TCM. We then tested the million data wires in the car from those modules back to the data link and they all had connection. So at this point im thinking we have a module issue forsure , so I pulled all of them out on the passenger side engine bay and found all sorts of issues BUT the main one was this TCM pouring fluid out of it 🤨 I was thinking water at first but after further inspection it was transmission fluid!!!! Let’s go back to science class , particles can grab onto each other depending on the elements , so what was happening was the seal on the transmission plug was worn out and over time the TCM was pulling fluid through the blown seal and it was following the signals all the way back to the TCM! I took a gamble cleaned the tcm and dried it, fixed all wiring and bam!! Fired up with no new parts!!!