hidden functions

[Georges]

Hey all I found this, maybe you may need it.

The HVAC (Heating, Ventilation, Air Conditioning System) of the 1996 E36 has
a feature allowing different sensor values to be displayed on the control panel.

To Access the Display Function:
Press the "AUTO" and "REAR DEFROST" buttons simultaneously.
12 displays are available.
Toggle through them by pressing the fan rocker (+ or -) switch.

Number
Test Function

1
Interior Temp Sensor

2
Exterior Temp Sensor

3
Left Heater Core Sensor

4
Right Heater Core Sensor

5
Evaporator Temp Sensor

6
Engine Speed Input

7
Road Speed Input

8
"Y" Factor Value

9
Fresh Air Flap Position (%)

10
AUC Sensor Voltage

11
Battery Voltage

12
Software Version


To Exit the Display Function:
Press the "RECIRC" and "AUTO" buttons simultaneously, or
Turn off the Ignition.

Note:
1. Decimal Points are not shown, Hence 75.5% is displayed as 755.
2. All Temperature displays are in °C (Centigrade).
3. Negative values are indicated with minus sign


Georges

 

[manuel]

yeah ive read about this somewhere, i just never got around to doing it...thanks.

 

[frolf]

whoa thats way cool

 

[frolf]

hmmm, couldn't get it to work

 

[SWB]

Didn't work for me either.

I have a hypothesis: My owners manual has updated versions of pages 43-46, which describe the automatic climate control, stuck into it. This is what my car has, except the unit described in the manual has an automatic recirculated air mode (there are two LEDs and two symbols on the recirculated air button, one of them with an 'A' inside). The unit in my car does not have this feature (the button only has one LED and one symbol, no 'A'). Perhaps these hidden functions apply only to the unit with automatic recirculated air?

My car has a production date of1996/02. Anybody know when they started installing the units with automatic recirculated air?

Georges & frolf, do your cars have the automatic recirculated air function? And what is the production date of your car?

 

[manuel]

another pre-OBDII feature?

 

[Georges]

yes SWB my car has the auto recirculate function with 2 led's I will try to submit some pics later, but do you think it works with me cause my car comes from Germany?
Production date is 11/1997.
AS far as i know that they started installing these units since 1995

 

[frolf]

i think my production date was 1/96, can't remember, but i think thats it, and it is US spec

 

[SWB]

do you think it works with me cause my car comes from Germany?

Actually, all of our cars come from Germany , but I know what you mean.

I don't really know any more than you do (and probably less), but I suspect it has more to do with the production date than the market the car was built for. frolf and I both have older cars; my guess is that this is something introduced with the newer A/C unit (with auto recirculate).

 

[Georges]

Well sorry for the late reply, you may be right on what you said, but they told me that even old produced ones have these features. You have to push the buttons at the same time.

in the attached pics you can see function 6 showing the engine speed(rpm = 650).