W210 Climate control

[johnemery5]

Hi all, the climate control on my 1996 E320 does not seem to alter the air distribution when you press the appropriate button. Any ideas what is wrong?
Thanks

 

[Parrot of Doom]

I believe this should help on yours:

Press and hold the the REST button for close to ten seconds and a diagnostic can be performed.

Here's what the codes represent:
01 = In-car temp sensor
02 = outside temp sensor
03 = left heat exchanger (heater core) temp sensor
04 = right heat exchanger sensor
05 = evaporator sensor
06 = coolant temp
07 = refrig. pressure in bar
08 = refrig temp sensor (23*9 = 23.9deg C)
09 = nothing
10 = Blower control voltage (great for evaluating blower controller problems)
11 = emissions sensor (B31) e.g. 3.1 = 31.v
12 = sun sensor 4.2 = 4.2v
20 = aux fan control 6.1 = 6.1ma (max 10ma)
21 = engine speed
22 = vehicle speed
23 = Circuit 58d e.g. 99 = 99% of battery voltage
24 = BATTERY VOLTAGE e.g. 12.5 = 12.5v
30 = left rear air conditioning heat exchanger temp sensor (not all vehicles; obviously)
31 = right side
32 = rear evap temp sensor
33 = blower control voltage rear 0.8(MIN) - 6.0(MAX)
34 = left rear temp selector
35 = right side
38 = software status e.g. 37 rear air conditioning
40 = control module version software status (?)
41 = control module version menu hardware status
42 = control module variant code 1st number
43 = variant code second number.

 

[johnemery5]

Thanks for the info Parrot of Doom. I'll will run the diagnostic tomorrow and report back. Cheers John

 

[bigasotonuk]

Hi,
Performed this diagnostic on my C43 and its giving me 01 fault code, In-car temp sensor.
What should my next course of action be? replace it? If so where is it situated?
Any ideas?

 

[Parrot of Doom]

I think its in the interior light cluster above your head. There should be a fan next to it. While you're in there, give the fan a blast of air to clean the dust off, and if you can a drop of oil in the bearing.

 

[bigasotonuk]

Hi,
Thought that was where it was replaced it in my C230K as the fan was making a noise and no amount of oil would quieten it.
The system was running with auto off when i performed the diagnostic is this correct?
Many thanks for the reply,

 

[johnemery5]

Could someone tel me how to run the diagnostic. I pressed the REST button for 10 sec with the ignition on. It then came up with 01 on the left hand side with 12 on the right hand side. Presumably this is the interior temp. How do you move onto complete the rest of the diag and how do you know if there is a fault? Cheers John

 

[johnemery5]

Any one any ideas on the above please?

 

[malcolm E53 AMG]

Try this!

http://www.continentalimports.com/ser_ic40142.html

Hope this helps.

 

[johnemery5]

Thanks malcolm210 for your help with this. I will run the diag as per the link and let you know how I get on. Cheers John