W126 722.3 First Gear Start

» I don\'t speak German, but does anyone know of instructions to modify these
» transmissions to have first gear start. I know about shifting into 2 and
» then back to D.
»
» Thanks
Warren,I think I have it in my PC somewhere. You need the early W126 380 (etc ) trans module. There is a white wire running to the module,you tap into this with a feed from the power side of the kick down switch . It tells the trans to start in first all the time.

Found it!

Zitat

On the pre 09/85 w126 cars, the module is located under the dash, right next to the steering column.

Black box, approx 4 x 3 inches.

All you need to do is remove the white wire from pin 2 on this module and splice it to +12V Hot with ignition.

Easy as that - now you\'ll have first gear start.

That wire on Pin 2 is only +12V when you engage the B switch...as you may know, moving selector down to B and then pulling away gives you 1st gear start. So if you give this wire +12V at all times with ignition on, you will always pull away in 1st gear, without having to move lever into B. Just leave it in D and you will always start in 1st.

The MB module automatically cuts power to the B switch at 7mph, at which point 2nd gear engages.

It\'s a perfect module - costs approx $150 from dealership, but easy to find in a wrecking yard.....or under the dash if you have an early w126 !

Pre 09/85\'s will not start off in first gear unless this module is activated by giving a permanent +12V supply to pin 2.

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