[W126 Coupe] trunk lock

[Dick Spellman]

Kelly:
What year SEC is this again?
Check the fuse for the vacuum pump to see if it's okay or burnt.
If it is burnt, replace it with another of the same value (color) and 
see if it blows right away or when you again attempt to lock/unlock 
either door.
The wires under the rear seat, did you follow them up behind the seat 
back to the wire manager entering the trunk or did they go somewhere else?
Check the fuse for the circuit to the courtesy lamp in the trunk too.  
What is it condition?  This wire is known to cause a short where it 
clips to the trunk lid hinge and is always being moved.  The insulation 
can become torn resulting in a meltdown and short.

Dick

KBF wrote:

> Both doors do not unlock when you unlock one or the other. Also I pulled the

> back passenger seat out (to look for a unlock pull-cord under the rear seat

> as someone said) and the wires under the back seat are melted.  I guess

> that's it. OH BOY what now?   

>

> Thanks again for all the help everyone

> Kelly

>

>  

> -----Original Message-----

> From: mbcoupes-bounces at mbcoupes.com [mailto:mbcoupes-bounces at mbcoupes.com]

> On Behalf Of Chet Hwilka

> Sent: Saturday, September 08, 2007 2:59 PM

> To: 'Mercedes Coupes Mailing Lists'

> Subject: Re: [W126 Coupe] trunk lock

>

> Do both doors unlock when you unlock one or the other?

> Because the trunk should unlock too.

>

> If the doors do and the trunk doesn't, I'd think there is something

> interfering with the pneumatic to lock barrel linkage. (that's the rod at

> the bottom of figs3-5)

> That rod should move freely from left to right, independent of the key, by

> the vacuum actuator of the central locking system. 

> The key also moves that rod left to right when turned.

>

> Maybe try giving the area of the rear license plate a few raps with you hand

> to hopefully shake it loose..

>

> -----Original Message-----

> From: mbcoupes-bounces at mbcoupes.com [mailto:mbcoupes-bounces at mbcoupes.com]

> On Behalf Of KBF

> Sent: Saturday, September 08, 2007 11:47 AM

> To: 'Mercedes Coupes Mailing Lists'

> Subject: Re: [W126 Coupe] trunk lock

>

> Thanks for the help But the lock is in the 12 0`clock position and will not

> turn and trunk is locked. Could it be a wiring problem 

>

> -----Original Message-----

> From: mbcoupes-bounces at mbcoupes.com [mailto:mbcoupes-bounces at mbcoupes.com]

> On Behalf Of Chet Hwilka

> Sent: Saturday, September 08, 2007 8:46 AM

> To: 'Mercedes Coupes Mailing Lists'

> Subject: Re: [W126 Coupe] trunk lock

>

> K,

>

> The trunk lock has a dual locking system.  In addition to the button latch,

> there is a bolt style lock that is normally engaged by turning the key to

> the 3 o'clock position and removing the key. The trunk can not be unlocked

> with the valet key.  

> The problem that can happen, is the bolt linkage pops off and allows the

> bolt to float around, it slides into a lock position and you can't unlock

> it.

>

> http://mywebpages.comcast.net/chwilka/secondary_trunk_bolt_lock.htm

>

> Hope this helps.

> Chet

>

>

> -----Original Message-----

> From: mbcoupes-bounces at mbcoupes.com [mailto:mbcoupes-bounces at mbcoupes.com]

> On Behalf Of KBF

> Sent: Friday, September 07, 2007 7:53 PM

> To: 'Mercedes Coupes Mailing Lists'

> Subject: [W126 Coupe] trunk lock

>

> Hi 

>

> I can not get my Trunk open with or without the key anyone know how the

> locks work.

>

> Thanks K

>