replacing ignition switch for a push button starter

[mutley666]

I would like to replace my complete ignition switch for a push button starter an a rocker switch hidden somewhere to switch ignition on/off.
Is this possible if so how?
W126 560 sel

 

[prprandall51]

In the good old days you just needed a momentary-contact switch and a conventional switch - and a few connectors and stuff.

Modern ignition switches are much more complicated. For example, they cut power to ancilliary circuits (such as headlights) whilst starting, but not primary circuits (such as sidelights). Heaven knows what other signals are sent from the ignition switch at start time to a modern ECU-equipped car.

I would think it's do-able, but it is going to take a lot of work and a fair amount of time with the wiring diagrams. Good luck.

Philip

 

[Spinal]

Most aftermarket "push button starters" clearly state "not compatible with mercedes cars"; so I am guessing that a merc will have some form of "protection"...

 

[Flash]

Personally, I would not bother as the W126 has a complex wiring/gadgets etc. and this would no doubt lead to further problems down the line.