2005 Thermotronic (digital climate control)
greetingz,
greetingz,
i have a european spec w209 MY2006 with a thermatic unit...
recently i got a thermotronic from ebay and as far as i remember part number was A203xxxxxx etc...i think its the same in w203 and w209 cars...
but unfortunately it was not working (blowing hot air at one direction)
do you know anything new on this install??
what do i have to do to get it working? do i have to change something? do i have to keep on searching for the "one" and "only" thermotronic unit for my car?
thanks a lot

Link
I bought A203-830-19-85...But there at least three numbers that I know of...all having to do with (I am hoping) REST and logo layout.
Thanks,
Jake
(I do not want to damage any of my HVAC components, the PWM motors, the heater valves or the fan - I want to gain no feature but REST and I will be completely happy if I can get the interior design aesthetic to be more unified...Thanks)
The Best of Mercedes & AMG




I recently installed one on my 2005 C230. See post 46 on this link: https://mbworld.org/forums/c-class-w...revival-2.html The part number of the unit I used is A203 830 44 85.
In my case, all of the old functions worked fine, but none of the new functions did. The cars that weren't equipped with the climatronic units don't have all the components needed to support the new functions.
Good luck with you project.
I recently installed one on my 2005 C230. See post 46 on this link: https://mbworld.org/forums/c-class-w...revival-2.html The part number of the unit I used is A203 830 44 85.
In my case, all of the old functions worked fine, but none of the new functions did. The cars that weren't equipped with the climatronic units don't have all the components needed to support the new functions.
Good luck with you project.
There is clear WIS VIN specific info on, particularly the A/C and A/C[off] Button.
https://mbworld.org/forums/c32-amg-c...ew-mods-3.html
Also - if you do this - take the time to add the SOLAR and MULTI-FUNCTION Sensors...then remove the DEW POINT Sensor.
There is clear WIS VIN specific info on, particularly the A/C and A/C[off] Button.
https://mbworld.org/forums/c32-amg-c...ew-mods-3.html
Also - if you do this - take the time to add the SOLAR and MULTI-FUNCTION Sensors...then remove the DEW POINT Sensor.
You will NOT;
have full function without the above mentioned Sun and Multi function Senors - it will (possibly) internally compensate with the OEM dewpoint sensor.
be able to adjust the right side airflow (you will still only have 6 of the needed FULL Climatronic 10 motors) with the rotary knob.
be able to use the active charcoal filter - you still won't have it.
WHEN it normalizes - you will have temp control and all other "basic" functions using the left side rotary knob for air directing, at least, that seems my case...I just set it to AUTO and let it do it's thing!
You will NOT;
have full function without the above mentioned Sun and Multi function Senors - it will (possibly) internally compensate with the OEM dewpoint sensor.
be able to adjust the right side airflow (you will still only have 6 of the needed FULL Climatronic 10 motors) with the rotary knob.
be able to use the active charcoal filter - you still won't have it.
WHEN it normalizes - you will have temp control and all other "basic" functions using the left side rotary knob for air directing, at least, that seems my case...I just set it to AUTO and let it do it's thing!

https://www.mercedesforum.nl/forum/d....php?id=183436
as well as look for document AN83.75-P-0001PD if you’re interested in retrofitting Residual Engine Heat Utilization System...or [REST]
https://www.mercedesforum.nl/forum/d....php?id=183436
as well as look for document AN83.75-P-0001PD if you’re interested in retrofitting Residual Engine Heat Utilization System...or [REST]


