A small tip: Removing instrument cluster.
 

I found a trick to remove instrument cluster on W124.

Today I removed instrument cluster on my 92 400E, I don't have those special factory tools, I just removed the A/C vent at center of the dash, then the right edge of the instrument cluster exposed, I just grabbed the edge by my hand and pulled it out.

It took me 10 minutes to do the job, I guess if I also remove the A/C vent on the left, I should be able to pull it by both hands, it will make it even easier.

When dealer sold this 400E to me, ABS was not working, those smart guys removed the ABS warning bulb in the instrument cluster, I fixed the ABS and a bunch of other problems by just replacing fuse "F1" in the computer box, so it's time to put the that bulb back.

Thanks for the tip!

There is a instrument panel bulb on our 300E that comes on and off - probably a bad ground. I'll have to try your trick to check it out.

So you don't need to take off the steering wheel? That's good news!

No, you don't need to remove steering wheel at all.

Dennis, if you want to try it, I know for you 300E, you need to first disconnect speedometer cable, though it's not necessary for 400E.

Is it tough to remove the center vent? Could you post general instructions?

Thanks

For the center air vent:
1. Open the passenger side storage, remove a screw on the right of the center air vent.
2. Use an Allen wrench, loose the screw inside the vent ( this bolt connects the lever to the door inside the vent), just disconnect the lever from the door, the lever will hold the screw, you don't need to remove the screw.
3. lift the right edge of the air vent by 1 cm, then use two small flat screw drives to lift the two hidden clips in the left vent by 1 cm, then lift the right edge further more, the air vent will come out.

Installation is the reverse of the removal, the most difficult part is to re-attach the lever to the door inside the vent, you need to hold Allen wrench by one hand and adjust air vent lever by other, until the screw bites, then fasten the screw to allow lever to be able to reach max open position.

Feel the vent, you will realize why MBs are so heavy.