Secret Menu instrcutions?

[omeyhomey]

there are lots of little sensors, i remember when teh guy showed me there were like 10-15 cool usable features so i'd love to know exactly which are which

[haister]

Hey Guys Leini is right, did any of you guys try it on your car to see if it work yet? I recorded the codes with the engine off and in idle. If we get enough people to record their and also while they are driving, we probably can figure some of these number out.


Code # - Code Function - Eng. off - Eng. Idle
1 73 73
2 62 62
3 78 78
4 78 78
5 76 76
6 71 120
7 05 05
8 67 67
9 27 27
10 0.0 0.0
11 2.4 2.6
12 4.3 4.3
20 3.2 3.2
21 32 44
22 Real speed w/o offset 00 00
23 32 211
24 Battery voltage 11.6 13.5
40 164 164
41 91 91
42 08 08
43 136 136

[omeyhomey]

great info... ya we need to figure out what they mean.

[JOE55]

Have you guys tried asking the stealership for the code meaning?

[haister]

Have you guys look at the codes for your car to see if it's the same as mine? I will have to drive around and look at the differenct codes to see what is changing.

[omeyhomey]

well boys n girls... i found out some more info ...

http://www.eclassbenz.com/node/27

This site is very informative nad it says that sensor #1 is in-car temperature. That site has alot of info. hope that helps.

[omeyhomey]

well guys, i found a few more , i'm trying my best to find them all. This only shows #1-8, theres obviously many more.


A/C Sensor Values
Enter the values from each sensor.
Sensor 1 - Inside Temperature:*
Sensor 2 - Outside Temperature:*
Sensor 3 - Left Heater Core Temperature:*
Sensor 4 - Right Heater Core Temperature:*
Sensor 5 - Evaporator Temperature:*
Sensor 6 - Engine Coolant Temperature:*
Sensor 7 - Refrigerant Pressure:*
Sensor 8 - Refrigerant Temperature:*
Error Codes:
Error B1226 - In-car Temperature Sensor Malfunction
Error B1227 - Outside Temperature Sensor Malfunction
Error B1228 - Left Heater Core Temperature Sensor Malfunction
Error B1229 - Right Heater Core Temperature Sensor Malfunction
Error B1230 - Evaporator Temperature Sensor Malfunction
Error B1231 - Engine Coolant Temperature Sensor Malfunction
Error B1232 - Refrigerant Pressure Sensor Malfunction
Error B1233 - Refrigerant Temperature Sensor Malfunction
Error B1234 - Sun Sensor Malfunction
Error B1235 - Emissions Sensor Malfunction
Error B1241 - Refrigerant Low
Error B1416 - Coolant Circulation Pump Malfunction
Error B1417 - Left Duovalve Malfunction
Error B1418 - Right Duovalve Malfunction

[omeyhomey]

It seems you can also clear codes as well. I found this on another forum...

"SimonL
06-22-2005, 07:22 PM
I have issues with my '99 E320's a/c and after reading Steve Brotherton's very good article I retrieved the error codes:

B1231-ECT sensor
B1234-Sun sensor
B1459-Series interface connection to instrument cluster

I have just had the transmission changed and a major service done and the a/c stopped after that. May just be fluke but i'm not sure. I have heard that I may be able to just reset the error codes and all may be well and was wondering how to do this?
I have made a search on this board but can only find reset info for the older style of control panel.
Thanks for any help.

JLLG
06-23-2005, 01:43 AM
While in the DTC (Diagnositc Trouble Code) read out mode, cycle through all errors, then simultaniously press both Auto buttons > 2 seconds. The display should change. Pressing auto again will cancel the erase. Turn off ignition to end test. They should be gone. Let us know if this works, I got this from WIS.

SimonL
06-24-2005, 12:20 PM

Yep it worked as you said and codes are now cleared.
Unfortunatly the a/c still blows hot so I am looking at the diagnostic values and will try and work out from them what is most likely the problem.
My local dealer wants to put leak detector in the system but I don't have any codes telling me this is a problem so am not sure if this is a waste of time and money."

[omeyhomey]

well boys, been hard at work. I think i may have found the last few bits of code...

3. Additional Data:
10 Blower Control Voltage: 6.0V
11. Emission Sensor: 2.4V
12. Sun Sensor: 4.1V
20. Control Current for Auxiliary Fan: 3.2mA (Is this value too low?)
21. Engine Speed: 44 or 4,400rpm
22. Vehicle Speed: 0 (makes sense to me)
23. Terminal 58d: 32 or 32%
24. Battery Voltage: 13.3V
40. Software Status: 164
41. Hardware Status: 85
42. ???: 40
43. ???: 136


hope that helps boys

[haister]

Great detective work! You get the beer, cheers!!! That other site has a lot of good info. We should clean this data up and add it to the MOD and information sticky for E55. I will work on it.