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  #1  
Old 11-10-2005, 07:18 AM
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I am trying to R&R ignition switch

I have the instrument cluster out, the square trim around the key hole out and the bottom panel on driver's side out. No amount of poking the holes around the key to release the black round trim is working. There is a 3 to 4" diameter black vent tube right across the bottom that blocks access to the lock...do I need to remove this as well?

Of course I started the job with the car parked halfway in the garage
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  #2  
Old 11-10-2005, 09:28 AM
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bump and this is 90 sdl.
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  #3  
Old 11-10-2005, 09:33 AM
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See Diesel Giants pictorama

Diesel Giant does have a nice review of removing the ignition but it is based on W123 Diesels. I don't know how well it fits your model, but I think it could be of value.
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  #4  
Old 11-10-2005, 09:43 AM
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Thanks.
Saw that and most other posts under ignition replacement.

They all say to remove the bottom piece under the drivers side to access the steering lock but I have this drain looking vent piece that blocks everything.
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  #5  
Old 11-10-2005, 09:45 AM
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Which car? If it's the 126 I have a good thread here with pic's and tools. 123 and 126 are two different animals.
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  #6  
Old 11-10-2005, 10:13 AM
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126
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  #7  
Old 11-10-2005, 07:10 PM
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If changing just the ignition (non tumbler) portion of the switch, there is no need to remove the black ring around the key.
There is no need to remove the panel below the steering wheel either.
Remove inst. cluster.
loosen the allen that holds the ignition to the steering.
Undo the 2 bolts holding the steering.
Insert key to 1 position and push release pin and pull switch to right. The key has to be removed after the release pin releases the assembly.
Undo the 2 vac lines connected to the assembly.
Rotate assembly to get to switch...remove 3 screws and swap in new part.

Reverse the above and turn key to find out it wasn't the switch that caused the problem!!!!
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  #8  
Old 12-25-2005, 10:09 PM
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doing the same repair tomorrow

Andmoon, I need to change out the electrical portion of the ignition switch in my W126 which will solve the climate control fan problems. I have already removed the panel under the steering column to replace the seat belt warning module. I am replacing the bulbs in the instrument cluster while its out. I was thinking of replacing the key tumbler assembly also if I can figure out how to remove it. Any words of advice?
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  #9  
Old 09-18-2007, 01:19 PM
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revival...
anyway, My SD will not start with the key. the transmission and shifter are firm and new. I am pretty sure it's the switch itself, as the glow plugs continue to glow even after I attempt to start... I will swap the switch from my parts car and see if it makes any difference.
is there a start relay? fuse? something to check before swapping the switch?
Thanks!
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  #10  
Old 09-19-2007, 09:10 AM
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so... nobody knows any more about this? I will investigate on my own... yea me.
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John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread
"as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do!

My drivers:
1987 190D 2.5Turbo
1987 190D 2.5Turbo
1987 190D 2.5-5SPEED!!!

1987 300TD
1987 300TD
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!
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  #11  
Old 10-07-2007, 06:22 PM
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Hey, check this out if it is like mine & make sure it is!

http://www.peachparts.com/shopforum/tech-help/200554-1987-300e-key-stuck-ignition-post1640662.html#post1640662
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  #12  
Old 05-12-2010, 09:14 AM
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What'd ya find out John?

Quote:
Originally Posted by vstech View Post
so... nobody knows any more about this? I will investigate on my own... yea me.
Well ... was it the switch?

Do manual's have a clutch safety switch?
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  #13  
Old 07-21-2011, 03:55 PM
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Square trim around key removal?

How is the square plastic black trim removed? 1986 300SDL thanks!

Quote:
Originally Posted by andmoon View Post
I have the instrument cluster out, the square trim around the key hole out and the bottom panel on driver's side out. No amount of poking the holes around the key to release the black round trim is working. There is a 3 to 4" diameter black vent tube right across the bottom that blocks access to the lock...do I need to remove this as well?

Of course I started the job with the car parked halfway in the garage
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  #14  
Old 07-21-2011, 04:04 PM
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Not easily. Mine broke during removal. There are little ears on the left hand side I believe. Don't know if the plastic 'catches' can be pushed from behind the dash to unlock them.
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  #15  
Old 07-22-2011, 10:57 AM
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Quote:
Originally Posted by kerry View Post
Not easily. Mine broke during removal. There are little ears on the left hand side I believe. Don't know if the plastic 'catches' can be pushed from behind the dash to unlock them.
I tried pushing the plastic studs out from behind to the dash to no avail. There is no way to remove the plastic trim around the ignition switch without breaking the studs off. There are metal clips around the plastic studs and they are fit tight enough not to come off without breaking the plastic studs off. Worked on trying every way to remove the plastic trim nearly two hours. Pretty lazy engineering on Mercedes part.
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