I guess the problem with my 300SL not shifting is caused by the EZL no longer working.

The question I have, does anyone know how these things work? There is a map sensor in it so I understand that part and it controls the coils for spark but there seems to be hundreds of different ones used on all different cars. Does anyone know if I can put one from a different model car just to try it or perhaps it would work fine and I wouldn't even notice a difference?

The one I need of course is $1700.00 but used ones can be bought for about $100.00 bucks but no one seems to have the number I need.

Has anyone ever replaced one with a different number?

The one I need is a 010 545 9532 or 012 545 2032

I'm 90% certain this is the problem but this is a very costly guess.