ES: Upgrade climate controller
#1
ES: Upgrade climate controller
Hello everybody!
I've been looking at the opened threads but did not find anything related to this problem...
I've recently adquired a second hand A4 B9 Avant with 15.000km. The car is just perfect. It does not have all features I'd like but I can live with it. However, one thing I am a bit dissapointed with is that it has the basic climate controller (the analog monozone one). It works fine but in my opinion is totally out-of-style...
I found the digital one through Internet (8W0 820 043 G) and just received it. The installation was quite straight forward and it worked fine until I turned on the car
After that the digital climate controller turned off and the off button started blinking.
It seems to me that once the system initializated it detected a non registered feature and it just disabled it. I'like to know if this feature can be enabled somehow (OBD, ...). Otherwise I'm afraid I'll have to return it.
At the moment I've reinstalled the analog climate controller...
Thanks!!
I've been looking at the opened threads but did not find anything related to this problem...
I've recently adquired a second hand A4 B9 Avant with 15.000km. The car is just perfect. It does not have all features I'd like but I can live with it. However, one thing I am a bit dissapointed with is that it has the basic climate controller (the analog monozone one). It works fine but in my opinion is totally out-of-style...
I found the digital one through Internet (8W0 820 043 G) and just received it. The installation was quite straight forward and it worked fine until I turned on the car
After that the digital climate controller turned off and the off button started blinking.
It seems to me that once the system initializated it detected a non registered feature and it just disabled it. I'like to know if this feature can be enabled somehow (OBD, ...). Otherwise I'm afraid I'll have to return it.
At the moment I've reinstalled the analog climate controller...
Thanks!!
#2
The digital controller requires additional hardware your vehicle doesn't have, including an upgraded compressor, compressor clutch, and added fans to circulate air into the extra zones. Unfortunately you can't just use the digital panel to control the lower end system.
A retrofit to the 3-zone system would in theory be possible, but the amount of parts required would likely not make much economic sense.
A retrofit to the 3-zone system would in theory be possible, but the amount of parts required would likely not make much economic sense.
#3
The digital controller requires additional hardware your vehicle doesn't have, including an upgraded compressor, compressor clutch, and added fans to circulate air into the extra zones. Unfortunately you can't just use the digital panel to control the lower end system.
A retrofit to the 3-zone system would in theory be possible, but the amount of parts required would likely not make much economic sense.
A retrofit to the 3-zone system would in theory be possible, but the amount of parts required would likely not make much economic sense.
The interesting thing is that after upgrading the module everything worked fine (the digital controller worked as expected, cold/heat, basic zones, ...) until I started the engine and the system initialized. After that I believed the system detected the HW change and disabled the module operation.
#4
You're certain it was actually working? Did you adjust fan speed and notice a difference? Adjust airflow direction?
Your hypothesis about what happened is correct. There are subtle differences between ignition on and engine on when it comes to vehicle systems checks. Since the air conditioning compressor is dependent upon running the engine, when the system detected an implausible situation it shut it down to prevent component damage. We design these failsafes intentionally.
Your hypothesis about what happened is correct. There are subtle differences between ignition on and engine on when it comes to vehicle systems checks. Since the air conditioning compressor is dependent upon running the engine, when the system detected an implausible situation it shut it down to prevent component damage. We design these failsafes intentionally.
#5
You're certain it was actually working? Did you adjust fan speed and notice a difference? Adjust airflow direction?
Your hypothesis about what happened is correct. There are subtle differences between ignition on and engine on when it comes to vehicle systems checks. Since the air conditioning compressor is dependent upon running the engine, when the system detected an implausible situation it shut it down to prevent component damage. We design these failsafes intentionally.
Your hypothesis about what happened is correct. There are subtle differences between ignition on and engine on when it comes to vehicle systems checks. Since the air conditioning compressor is dependent upon running the engine, when the system detected an implausible situation it shut it down to prevent component damage. We design these failsafes intentionally.
I suppose I'll have to return the module
#6
It worked because certain functions are mapped in software at the same logical addresses between the modules when they talk to the car's systems. However, the handshake that occurs (and must be satisfied) is different. I don't think this can be coded because the base A/C hardware doesn't know how to communicate with the digital module as the software is different. It won't respond in the manner the system is expecting, and it will shut it down.
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#8
Hello everybody!
I've been looking at the opened threads but did not find anything related to this problem...
I've recently adquired a second hand A4 B9 Avant with 15.000km. The car is just perfect. It does not have all features I'd like but I can live with it. However, one thing I am a bit dissapointed with is that it has the basic climate controller (the analog monozone one). It works fine but in my opinion is totally out-of-style...
I found the digital one through Internet (8W0 820 043 G) and just received it. The installation was quite straight forward and it worked fine until I turned on the car
After that the digital climate controller turned off and the off button started blinking.
It seems to me that once the system initializated it detected a non registered feature and it just disabled it. I'like to know if this feature can be enabled somehow (OBD, ...). Otherwise I'm afraid I'll have to return it.
At the moment I've reinstalled the analog climate controller...
Thanks!!
I've been looking at the opened threads but did not find anything related to this problem...
I've recently adquired a second hand A4 B9 Avant with 15.000km. The car is just perfect. It does not have all features I'd like but I can live with it. However, one thing I am a bit dissapointed with is that it has the basic climate controller (the analog monozone one). It works fine but in my opinion is totally out-of-style...
I found the digital one through Internet (8W0 820 043 G) and just received it. The installation was quite straight forward and it worked fine until I turned on the car
After that the digital climate controller turned off and the off button started blinking.
It seems to me that once the system initializated it detected a non registered feature and it just disabled it. I'like to know if this feature can be enabled somehow (OBD, ...). Otherwise I'm afraid I'll have to return it.
At the moment I've reinstalled the analog climate controller...
Thanks!!
I almost ...... just DO IT to my audi a4 b9 ..... and it works !!!
the only you have to do is to coding in audi service.
the only you have to do is to coding in audi service.
#9
Back to the discussion
Hi Friends!
My name is Fernando. I am from Brazil.
I just imported the digital climate control to upgrade the analog control that is default in my A4 2018.
But reading this thread, it caught me by susprise, as the discussion suggests that the upgrade is not possoble.
Any one was able to solve this puzzle withot going mad or changing the whole A/C system and spending billions of dollars?
My name is Fernando. I am from Brazil.
I just imported the digital climate control to upgrade the analog control that is default in my A4 2018.
But reading this thread, it caught me by susprise, as the discussion suggests that the upgrade is not possoble.
Any one was able to solve this puzzle withot going mad or changing the whole A/C system and spending billions of dollars?
#10
Hi Friends!
My name is Fernando. I am from Brazil.
I just imported the digital climate control to upgrade the analog control that is default in my A4 2018.
But reading this thread, it caught me by susprise, as the discussion suggests that the upgrade is not possoble.
Any one was able to solve this puzzle withot going mad or changing the whole A/C system and spending billions of dollars?
My name is Fernando. I am from Brazil.
I just imported the digital climate control to upgrade the analog control that is default in my A4 2018.
But reading this thread, it caught me by susprise, as the discussion suggests that the upgrade is not possoble.
Any one was able to solve this puzzle withot going mad or changing the whole A/C system and spending billions of dollars?