140 589 44 63 00 24-pin test cable - WS83.00-P-0026B
WARNING: This page is about a different car, the 2009 Mercedes-Benz CLK350 and 2008 Mercedes-Benz CLK350. However, it is still accessible from the selected car via links, so may be relevant.
FG 83/Set B
MODEL 140 with CODE (498) Japanese version
Use/specification:
24-pin test cable for diagnosis of automatic climate control with CNS (Japan) in conjunction with socket box 129 589 00 21 00