Locked keys in 88 420 sel - PeachParts Mercedes-Benz Forum

Diesel911 · #1 02-09-2012, 12:44 AM

I am a member of AAA and as well as Towing they have some free Locksmith Service.

In your case what I have seen the Tow Truck Driver do is put something like a Blood Pressure Cuff between the Door (pried open with a Plastic coated Tool) and inflates it prying your door out enough to stick something in and yank the Key out or pull the Locking Knob up.

If you do the Coat Hanger thing and try to pull up the Locking Knob be patient. If you do not have any thing to pry the Door a little wrap a big Screwdriver with masking or Duct Tape so it does not mar things so much.
It also helps if someone else pries the Door open and you have 2 free hands to manipulate the Coat Hanger.

macdoe · #2 02-09-2012, 01:24 AM

Quote:

Originally Posted by Diesel911

I am a member of AAA and as well as Towing they have some free Locksmith Service.

In your case what I have seen the Tow Truck Driver do is put something like a Blood Pressure Cuff between the Door (pried open with a Plastic coated Tool) and inflates it prying your door out enough to stick something in and yank the Key out or pull the Locking Knob up.

If you do the Coat Hanger thing and try to pull up the Locking Knob be patient. If you do not have any thing to pry the Door a little wrap a big Screwdriver with masking or Duct Tape so it does not mar things so much.
It also helps if someone else pries the Door open and you have 2 free hands to manipulate the Coat Hanger.

Thank you diesel911: It is looking like I will either have to do the break and enter thing or get a locksmith. I went underneath to see if I could see the vacuum resovoir or something resembling the black bubble looking thing that is behind the bumper on the diesel wagons (vacuum resovoir?)but it is not there on this one.
I believe that on the 420 sel parts car I have there was a larger diameter solid yellow vacuum line that comes from the area of this electric vacuum pump (trunk??). Can't see that either from outside the car or in the engine compartment. It probably exists from the electric vacuum pump and goes to the doors which is inside the car. Really is no way to get at it from outside the carthat I could see.

vstech · #3 02-09-2012, 03:17 PM

Quote:

Originally Posted by macdoe

Thank you diesel911: It is looking like I will either have to do the break and enter thing or get a locksmith. I went underneath to see if I could see the vacuum resovoir or something resembling the black bubble looking thing that is behind the bumper on the diesel wagons (vacuum resovoir?)but it is not there on this one.
I believe that on the 420 sel parts car I have there was a larger diameter solid yellow vacuum line that comes from the area of this electric vacuum pump (trunk??). Can't see that either from outside the car or in the engine compartment. It probably exists from the electric vacuum pump and goes to the doors which is inside the car. Really is no way to get at it from outside the carthat I could see.

correct... no external access to the lines...

one thing to check... is the gas door locked? if not, then it's likely the doors have had an aftermarket lockers installed...

macdoe · #4 02-10-2012, 01:17 AM

Quote:

Originally Posted by vstech

correct... no external access to the lines...

one thing to check... is the gas door locked? if not, then it's likely the doors have had an aftermarket lockers installed...

Yes, the gas door is locked.

macdoe · #5 02-10-2012, 05:19 PM

Got the door open with a coat hanger... three hours later. Then the horn/alarm went off, lights blinking, while I was tightening the battery clamps. I think it went off when I touched the hood sensor thing up by the battery. I also had the d.s door open. Fixed theproblem by rolling down the window and closing the door all the way.

About a minute of cranking and the engine started. The voltage regulator was putting out 17.81 volts so I shut it off. Probably too high for a brand new fully charged battery?
Thanks to all that helped me out.