Hello Wayne.
I hope you and your family are keeping well.
Thank you for your kind offer. I think they are both OK and the readings from the peak tester was a bit suspect.
If the unit was mine I would would get stuck into it and see what is in this heatsink unit on the back. The bits are internally ENCAPSULATED. no external screws he managed to source another working one which we tested on my Mercedes and it is OK. The other reason I am over cautious is my hands no longer work properly very bad shakes.
Mercedes will not release the circuit diagram which is rediculas the technology is ancient
Kind Regards Jim

Mercedes will not release the circuit diagram which is ridiculous the technology is ancient

There are moves afoot in the USA and UK (and Oz?) to force manufacturers to release such information under the doctrine of repair and reconstruction.

There are moves afoot in the USA and UK (and Oz?) to force manufacturers to release such information under the doctrine of repair and reconstruction.

And so we should force them too. There should be a universal rule in all markets - share the love or hit the road.

Thanks GTC and Brad.
I have contacted them in Germany they did acknowledge me and sent my request to the relevant department. However I am not holding my breath.
Regards Jimb.

I once needed to track down some data so we could be design centre when controlling a particular satellite receiver box with IR signals.

Contacted a manufacturer's engineer by email and was told that the data was proprietary, confidential and hence not available.

Told him that the data was easily discoverable by sampling but that we wanted to make sure we were in the middle of the tolerance band and that the policy in this case at least was pointless.

Next thing I get an email from him saying "I have no idea how this confidential document came to be attached. Must be a virus."

Sounds like the American situation, John Deere for example. If you buy a tractor, and decide to modify its operating parameters, they'll sue.

Whatever happened to "I bought it, it's mine, I'll do whatever I want with it."

Sadly, that attitude from John Deere will probably make more people buy their equipment. The most of a bar sted that a company is, the more popular they seem to become. The same applies to Apple and iPhones. Since its release in 2007, iPhone owners have grumbled about everything from poor quality charging cords to screens that crack, phones that bend and break when they are in people's pockets, locked down operating systems, etc and yet they all still line up in the wee hours outside Apple shops when they release the next model - go figure.

Providing criminal law is not being contravened, when someone buys something, they should indeed be able to do with it as they please.