[R129 SL] 1998 SL500 Central Locking System

[ZIGGOR at aol.com]

Hello fellow enthusiasts, 
 
  My 1998 SL500 has recently begun displaying several gremlins. On  occasion, 
the door locks will unlock while traveling. Originally I thought a  sudden 
jolt triggered the post accident unlock system but there seems to be  no 
correlation between rough road and occurrence. The second gremlin to manifest  itself 
is the occasional failure to unlock the trunk via the remote, console  
switch, or outside mechanical key. Several cycles of locking and unlocking the  
doors via the remote and key, starting the car, and pushing down slightly  on the 
trunk lid generally cures the problem. I'm unsure if my actions have any  
effect on the problem but they occupy my time while I wait for the unlock system  
to decide to return to functionality. 
Finally, following the unlocking while traveling, the central locking  system 
has been losing all function. Recently, after the doors unlocked enroute,  I 
arrived at my location and found I could not lock the doors normally. I was  
able to secure the car by physically locking the passenger door and locking the 
 driver's door with the key. 
  Has anyone experienced similar symptoms and, if so, would you offer  me any 
advice as to what to check, repair, and/or replace?  Thanks in  advance for 
you input and advice. 
 
Glenn Ziegler
_Ziggor at aol.com_ (mailto:Ziggor at aol.com) 
_Zigbenz at aol.com_ (mailto:Zigbenz at aol.com) 
 





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