Need some help
#1
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2003 Mercedes Benz ML320 - 2000 Mercedes SLK
Need some help
Maybe you can give me some advice before I tackle what's going on with my AC issues - summer will be here soon so I figured I get things done.
A couple of months ago, I stopped getting cold air, it doesn't matter how cold I set my temperature, I only get hot air now.
Attached are the codes that I get when I scanned my ML320. I know about the first code - it's just a hose I have to change.
I'm more concerned about the last 5 codes about my AC.
My scanner is a Matco Maximus 2.0
Any thoughts on where I should start?
Thank you
A couple of months ago, I stopped getting cold air, it doesn't matter how cold I set my temperature, I only get hot air now.
Attached are the codes that I get when I scanned my ML320. I know about the first code - it's just a hose I have to change.
I'm more concerned about the last 5 codes about my AC.
My scanner is a Matco Maximus 2.0
Any thoughts on where I should start?
Thank you
![](https://cimg2.ibsrv.net/gimg/www.mbworld.org-vbulletin/1280x800/scan_52831dfeb0e58055324e055c58c2299339976ec0.png)
#2
MBWorld Fanatic!
The first two codes are the tell tail story. When the Coolant Circulation Pump fails electrically, it shorts the wiring in the AAC Cont. Module. Stupid & costly design by Mercedes.
So to solve this issue you must replace the pump first and then the AAC Module, used, new is too expensive.
Post your full vin# for proper parts.
So to solve this issue you must replace the pump first and then the AAC Module, used, new is too expensive.
Post your full vin# for proper parts.
#3
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2003 Mercedes Benz ML320 - 2000 Mercedes SLK
#4
MBWorld Fanatic!
Here are the part numbers for the pump and the AAC Module (only buy module with that number).
As for the pump make sure you choose one with the right number.
Make sure that you get the radio keys. After installing them push the keys outward and pull the radio out. Do not disconnect the radio if you do not have the code.
As for the pump make sure you choose one with the right number.
Make sure that you get the radio keys. After installing them push the keys outward and pull the radio out. Do not disconnect the radio if you do not have the code.
![](https://cimg4.ibsrv.net/gimg/www.mbworld.org-vbulletin/1094x511/2020_04_24_152220_bbe421c7568af15ce17eb6fe1ab6a210a9a81eec.jpg)
![](https://cimg2.ibsrv.net/gimg/www.mbworld.org-vbulletin/1170x463/2020_04_24_152951_145da6337a6297bf7cc52718f7b182241014dda1.jpg)