[R129 SL] Ignition switch/key problem

[gregorio at weststargroup.net]

I had this problem as well - my mechanic explained that it is a common problem with the early models (mine is a '91 as well) and can prove to be very expensive if you DON'T get the key out. Once out, it is a fairly easy fix.  The keys & ignition tumblers tend to wear out and you have to order a replacement key at the dealer (bring your registration the VIN number and a driver's license).  Keep trying and jiggling to get the key out, if you don't get it out, it's VERY expensive to repair!
Just replacing the key may solve the problem too.

Just my 2 cents.

Greg in West Hills, CA
91 500SL
  ----- Original Message ----- 
  From: Oldbenz1 at aol.com 
  To: r129list at mbcoupes.com 
  Sent: Saturday, June 14, 2008 11:36 AM
  Subject: [R129 SL] Ignition switch/key problem


  My '91 500SL has developed a serious problem.  When I turn off the ignition and try to remove the key I have trouble turning it to the extreme counter--clockwise detent so the key can be removed  Moving the steering wheel while attempting to turn the key does not help, nor does using other keys (I have 3 keys for this car).  After a lot of playing around with the key in the lock, I am finally able to remove it.  Likewise it is sometimes difficult to turn the ignition switch clockwise to start the engine- it is sticky.  A shot of aerosol WD-40 injected into the lock did not help.  Anyone had this problem and found a fix?  I'm afraid if I need to replace the ignition switch I may also have to replace all the other locks as well resulting in a major expense.





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