Climate control module
Thread Starter
Junior Member
Joined: May 2018
Posts: 19
Likes: 3
GL550, GLS63 AMG
Climate control module
The Climate Controller Module is unresponsive. There are no lights, it simply appears there is no power to the unit. The aux cooling fan is stuck running on HI, and the defroster has defaulted to ON. I have found other threads where replacing the controller is the most likely repair. The fuse is ok.
The part number on the sticker on the back of the unit is A 166 900 67 09, the HW:10/44 SW: 14/06.00
I tried looking up this part number on the Mercedes website with no luck. I have also tried finding a used part on eBay, again, no luck. If I search by 2015 GL550 I find plenty of controllers that the seller claims are “compatible”, but the part numbers are different. I am surprised there are so many part numbers for the same make, model and year. Am I missing something here?
The part number on the sticker on the back of the unit is A 166 900 67 09, the HW:10/44 SW: 14/06.00
I tried looking up this part number on the Mercedes website with no luck. I have also tried finding a used part on eBay, again, no luck. If I search by 2015 GL550 I find plenty of controllers that the seller claims are “compatible”, but the part numbers are different. I am surprised there are so many part numbers for the same make, model and year. Am I missing something here?
Super Member
Joined: Jul 2019
Posts: 733
Likes: 297
From: New Orleans
2014 GL450, 1992 W140 300SD, 1993 W140 300SE, 1987 E30 Convertible
Find MB EPC, locate your model, and check climate control modules. Parts usually got replaced with time by different versions, with different serial number.
However it might need a coding.
However it might need a coding.
