The SL is back, and after being scammed with a faulty reconditioned TCU for the 7G Tronic gearbox I finally gave up and handed it over to the professionals at AMG Cheshire who were absolutely fantastic.
Replacing the TCU with a factory provided unit direct from Mercedes-Benz, coded it in and got the gearbox working as good as new.
If anyone has this issue in the North West area or needs a good Mercedes specialist, I could not speak more highly of the guys at AMG Cheshire.

This has been a massive and expensive learning curve for me, to know when to hand over to the specialists and I hope it helps some of you too or at least saves people from spending money on faulty parts.



The links below are to other content creators that were a great help to me diagnosing and dismantling the TCU from the gearbox and I'd definitely advise you watch if you're looking to have a go at this yourself or just want to get an insight from a professional as to what this job takes.

https://www.youtube.com/watch?v=QJMBp_L9ADo&list=PLsB-2rK-Y2nbhJSSoJaM-p15h1GcvcDkk&index=2

https://www.youtube.com/watch?v=A95vdP05C3g&list=PLsB-2rK-Y2nbhJSSoJaM-p15h1GcvcDkk&index=3

https://www.youtube.com/watch?v=EVy254f7lN0&list=PLsB-2rK-Y2nbhJSSoJaM-p15h1GcvcDkk&index=6

https://www.youtube.com/watch?v=hYhGnpuUt4s&list=PLsB-2rK-Y2nbhJSSoJaM-p15h1GcvcDkk&index=4


#mercedes #sl400 #mercedessl #gearbox #salvagecars #copart