Thread: 1983 500 SL Heat will not shut off
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  #4  
Old 12-12-2010, 09:03 PM
abiby abiby is offline
82 380SL & 96 SL500
  
Join Date: Jun 2008
Location: Southern Illinois
Posts: 245
That should be the ACC III system.

Easiest recommendation would be to install a monovalve repair kit.
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