Ignition question - Key wont spring back in an 87 190D
 

Everything works, but I have to manually turn the key back to the warm-up position after the car starts, as there is no resistance whatsoever. It takes some finesse, and it would be better to get it working properly, but I'm not sure exactly what part I need, as I see several parts and combinations of steering lock assembly, ignition tumbler, etc. (Hoping its just the little tumbler I need, as I hear it is difficult to replace the rest). Thanks!

Ignition electrical
 

Hi. You will need to replace the electrical portion of the ignition switch. This is where the 'spring back' is located.
Your goal is to remove the ignition lock assembly.
I will attempt to attach a couple of pictures. Haven't done this in a while.
First picture is not from a 190, but it will assist. Note the copper button on top of the lock shaft. Right of the left tip. This needs to be depressed to remove the lock assembly. You do this by turning the ignition key to first position.
Second picture is the electrical portion of the lock needing replacement. As seen on the left of the picture. It is held in with three screws.
The procedure to remove the lock assembly takes more explanation than I have room here.
I can provide a more detailed instruction of this procedure to you if you send me your email address. In most cases it involves removing the instrument cluster to access the two bolts securing the steering column to the dash. Lowering the column allows more room to extract the lock assembly. I have done this hundreds of times since I sell lock sets on Ebay.
If you wish help(no charge for instruction) send a reminder request to cdplayer51@pacbell.net
Please refer to your 190 ignition spring back problem.
Thanks
Dan

Cool - thanks for the explanation and the pics - I emailed you as requested. i would be happy to buy the part I need off you from Ebay if you are selling them at the moment. -Ben