S-Class (W220) 1999-2006: S 320 CDI, S 320, S430, S 500, S 600

AC blows hot on drivers side cold on passenger side

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Old Jul 10, 2016 | 10:44 AM
  #26  
Jack_88's Avatar
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2018 C300
Originally Posted by DrDoe
#18 and #19
What manual is this? I'm still looking for a good one.
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Old Jul 10, 2016 | 11:07 AM
  #27  
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WISEPC for 2015. If you go back to my filter and dealer thread you can down load it. I can walk you through if you have issues.
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Old Jul 10, 2016 | 11:50 AM
  #28  
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From: California
2018 C300
Originally Posted by DrDoe
WISEPC for 2015. If you go back to my filter and dealer thread you can down load it. I can walk you through if you have issues.
Much appreciated.

This may take a while.
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Old Jul 10, 2016 | 12:05 PM
  #29  
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From: denver colorado
2001 s500 with amg factory sport package (black)
Yea ill swap those today and report back later. Thanks!! Havent tried this yet. Would the nr. Numbers on the climate control head help? The "hidden diagnostics " nubers. I can warm up the car to operating temp and write those down if it will help. Thanks again, ill report back after i swap 18 and 19
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Old Jul 10, 2016 | 12:10 PM
  #30  
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Originally Posted by Jack_88
Much appreciated.

This may take a while.
Don't mention it. We are here to learn and to share right?
#1 to #9 are what you need for the database. The rest are just trash.
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Old Jul 10, 2016 | 12:13 PM
  #31  
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Originally Posted by ssfisher
Yea ill swap those today and report back later. Thanks!! Havent tried this yet. Would the nr. Numbers on the climate control head help? The "hidden diagnostics " nubers. I can warm up the car to operating temp and write those down if it will help. Thanks again, ill report back after i swap 18 and 19
They might. I don't know the reference values but I can compare yours to my readings on the 04 S430
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Old Jul 10, 2016 | 12:14 PM
  #32  
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From: denver colorado
2001 s500 with amg factory sport package (black)
Roger that. Ill get 1 and 9. Im learning everyday with this car. I enjoy it tho. Those sensors look like they are behind the radio and climate controls. Is that right?
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Old Jul 10, 2016 | 01:26 PM
  #33  
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Yes. They are. I think you need to start at the ashtray then go up to the radio.
After I got my 1st S, I always wonder if I should go with the newer E. Well, I got my answer this week. I still like my older S more than this newer E.
Attached Thumbnails AC blows hot on drivers side cold on passenger side-photo117.jpg  
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Old Jul 10, 2016 | 01:29 PM
  #34  
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From: denver colorado
2001 s500 with amg factory sport package (black)
Nice. Ive got the radio and climate controls and ashtray out. I think i see the sensors behind some gray insulation. Trying to remove plugs now
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Old Jul 10, 2016 | 02:08 PM
  #35  
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From: denver colorado
2001 s500 with amg factory sport package (black)
Ok, swapped wires from left to right. They are two wire plugs. Small. I think those are sensors? Nothing changed. Still heat on drivers side cold on passenger and same 1417 code. Also reset code, no change. Here are some numbers while at idle:
Nr.00 +20,9 Nr.06 +75
01 +22,5 07 12,2 bar
02 +37 08 +40,7
03 +11 09 +9.8k
04 +45 10 5,8v
05 +4,4
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Old Jul 10, 2016 | 02:24 PM
  #36  
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W212 E350; W166 GLC300; W164 ML550; W164 ML63; W221 S65; W220 S430; Escalade ESV
That's disappointing.
What about the temp readings below?
Rest button with AC on:

0 AAC in-car temperature sensor (operating module)
1 Overhead control panel for in-car temperature sensor
2 Outside temperature sensor
3 Left heater-exchanger in car temperature sensor
4 Right heater-exchanger in-car temperature sensor
5 Evaporator core sensor
6 Engine temperature
N Refrigerant pressure
8 R134A refrigerant in-car temperature sensor
10 Blower control voltage
15 Average insolation value between 0 and 125%
16 Carbon monoxide value between 0 and 1023
17 Nitrogen oxide value between 0 and 1023
18 Dew point temperature
20 Fan output value between 0 and 100%
21 Engine speed
22 Ground speed
24 Battery voltage
27 Left hand potentiometer engine speed value between 0 and 100%
28 Centre potentiometer engine speed value between 0 and 100%
29 Right hand potentiometer engine speed value between 0 and 100%
30 Temp of blow air in left rear passenger-compartment
31 Temp of blow air in left rear passenger-compartment
32 Temp of evaporator core in rear passenger compartment
33 Blower voltage in rear passenger-compartment
34 Specified temperature in left rear passenger-compartment
35 Specified temperature in right rear passenger-compartment
40 Left hand defroster door value (open/closed plain text at limit stop)
41 Right hand defroster door value (open/closed plain text at limit stop)
42 Left hand footwell flap value between 0 and 100%
43 Right hand footwell flap value between 0 and 100%
44 Left hand blend flap value between 0 and 100%
45 Right hand blend flap value between 0 and 100%
46 Left hand diverter flap 0 and 100%
47 Right hand diverter flap value 0 and 100%
48 Recirculation door 0 and 100%
49 AKF bypass flap 0 and 100%
50 AAC Software
51 AAC Hardware
52 Software for rear passenger compartment air conditioning
53 Hardware for rear passenger compartment air conditioning
54 Software for stepper motor unit
55. Hardware for stepper motor unit
56 Software for centre nozzle
57 Hardware for center nozzle
58 Software for multifunction sensor
59 Hardware for multifunction sensor
60 Sofware for day-brightness sensor
61 Hardware for day-brightness sensor
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Old Jul 10, 2016 | 02:29 PM
  #37  
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From: Snowville, ID
W212 E350; W166 GLC300; W164 ML550; W164 ML63; W221 S65; W220 S430; Escalade ESV
My 04 S430
Nr.00 +22 Nr.06 +80
01 +22,5 07 12,2 bar
02 +35 08 +41
03 +7 09 +8k
04 +4 10 3,0v
05 +4

Is 04 a typo 4.5 and not 45?
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Old Jul 10, 2016 | 02:38 PM
  #38  
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From: denver colorado
2001 s500 with amg factory sport package (black)
I just started car and at idle: nr.04 +51c
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Old Jul 10, 2016 | 02:41 PM
  #39  
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From: denver colorado
2001 s500 with amg factory sport package (black)
In going to put the plugs back in the original sensors and check numbers again
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Old Jul 10, 2016 | 02:51 PM
  #40  
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Originally Posted by ssfisher
I just started car and at idle: nr.04 +51c
04 is on passenger side?
Perhaps we haven't swapped the sensors yet as they placed after the plugs #18 and #19?
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Old Jul 10, 2016 | 02:52 PM
  #41  
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From: denver colorado
2001 s500 with amg factory sport package (black)
Plugs in original positions:
Nr.00 + 22,6c
Nr.01 +24,7c
Nr.02 +44c
Nr.03 +49c
Nr.04 +15c
Nr.05 +5,3c
Nr.06 +81c
Nr.07 13,3 bar
Nr.08 +44,2c
Nr.09 +9,3k
Nr.10 5,8v
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Old Jul 10, 2016 | 02:53 PM
  #42  
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Originally Posted by ssfisher
Plugs in original positions:
Nr.00 + 22,6c
Nr.01 +24,7c
Nr.02 +44c
Nr.03 +49c
Nr.04 +15c
Nr.05 +5,3c
Nr.06 +81c
Nr.07 13,3 bar
Nr.08 +44,2c
Nr.09 +9,3k
Nr.10 5,8v
Make sense. 03 is on driver side
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Old Jul 10, 2016 | 02:56 PM
  #43  
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From: denver colorado
2001 s500 with amg factory sport package (black)
So here it is:
Plugs swapped;
Nr.03 +14c
Nr.04 +51c

Plugs in original position;
Nr.03 +49c
Nr.04 +15c


With this info i would say sensors are working like they should. They are reading acual air temp
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Old Jul 10, 2016 | 03:07 PM
  #44  
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From: denver colorado
2001 s500 with amg factory sport package (black)
Do you know what should happen if i unplug the dualvalve solinoids? The two small solenoids. I think the larger one is the resurculating pump? Will doing that tell us anything? And thanks for you time. Im sure you have better things to do on sunday.
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Old Jul 11, 2016 | 07:54 AM
  #45  
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Sorry I went off the grid. I haven't run into the duo but here is its function
Attached Thumbnails AC blows hot on drivers side cold on passenger side-photo182.jpg  
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Old Jul 11, 2016 | 08:00 AM
  #46  
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I still think this is the sensor issue. Here is the function and the location.
On a separate note, I found the sensor location for my rear unit. Haha!
Attached Thumbnails AC blows hot on drivers side cold on passenger side-photo628.jpg   AC blows hot on drivers side cold on passenger side-photo594.jpg  
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Old Jul 11, 2016 | 09:04 AM
  #47  
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My $ 0.02 worth:

as mentioned before: check the voltage at the duo-valve solenoids, must be the same for both under same selections on control panel.

IF we are talking about cars with the REAR ac, note that the (separate) duo-valve for that one is in the right forward fender (incorrectly described in the WIS).
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Old Jul 11, 2016 | 09:14 AM
  #48  
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Originally Posted by kraut56
My $ 0.02 worth:

as mentioned before: check the voltage at the duo-valve solenoids, must be the same for both under same selections on control panel.
Unless I'm mistaken, he replaced the duovalve already from earlier post
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Old Jul 11, 2016 | 12:38 PM
  #49  
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yes, but in this whole saga he has NOT confirmed that both solenoids actually work.

A used unit could be just as bad, as these duo-valve are notorious to stick.

Proper trouble shooting is advised here, before going into sensors.

The solenoids can be removed to check for corrosion at the springs, and the solenoid plugs can be disconnected/connected to test for function, after verifying voltage at the plugs.
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Old Jul 11, 2016 | 02:02 PM
  #50  
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Originally Posted by kraut56
yes, but in this whole saga he has NOT confirmed that both solenoids actually work.

A used unit could be just as bad, as these duo-valve are notorious to stick.

Proper trouble shooting is advised here, before going into sensors.

The solenoids can be removed to check for corrosion at the springs, and the solenoid plugs can be disconnected/connected to test for function, after verifying voltage at the plugs.
I see
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