Interior parts questions
 

1. On the dash... in the center... towards the windshield... there is a little part that sticks up... POINTED IN RED ARROW maybe flashed at one time... sits about 3 inches from the windshield. Purpose?

2. The round mesh part... POINTED IN YELLOW ARROW. Purpose?

Thank you.Attachment 21761

The round thing identified with the yellow arrow is really just a blank cover. In right hand drive cars the headlight switch would be in there and the cover would go on the left side. I think it also might be where the microphone would go for a factory mobile phone setup. The thing in the center identified is for the alarm system. It should blink when you first lock the car, you might only be able to see it blinking when it's completely dark. After a few of days being locked and undisturbed, it will stop blinking. I think that happens at the same time as when the key buttons go to sleep and you have to put the key in the door lock to unlock the car.

1) central locking LED indicator.
2) interior temp sensor and fan.

Thank you fellas!

What is the little fan for?

It pulls interior air over the temperature sensor to get an accurate reading for the climate control unit. ;)

Thanks. I need to see if my temp sensor works right. That may explain why my blend door doesn't move properly.

You could try to acces the climate control diagnostics to check it.

To access diagnostics:
Hold down the Recirculating & Air up buttons for 5 seconds. The + - buttons go up and down through the list of "c" codes. The center vent button switches the left display between the "c" code and its actual value. Press the Auto button to exit.


0c - ERL
1c - Oil Temp?
2c - Inside temp. Sensor mounted in the aspirator assembly at the side of the dash.
3c - Outside temp. Sensor located inside the air inlet of the A/C unit.
4c - Outside temp. Sensor located in front grill of the radiator. The data is fed to the Climatronic from the instrument cluster. When not moving, the instrument cluster OBC temp display retains it's last setting until moving. This is to prevent heat emanating from the radiator affecting the temperature sensor. The A/C unit uses the lower of the two outside air temp values in determining fresh-air temp.
5c - Outside temp. (matches OBC outside temp display)
6c - Coolant temp.
7c - Footwell discharge temp.
8c - Sun sensor (dash top)
9c - Sun sensor.
10c - Passenger compartment fan speed.
11c - Passenger compartment fan voltage.
12c - Temperature mix Flap command 1=COLD, 100=HOT
13c - Temperature mix Flap position
14c - Central Flap command
15c - Central Flap position
16c - Footwell/Defrost Flap command
17c - Footwell/Defrost Flap position
18c - Recirculation Valve command 1=OFF, 100=RECIRC
19c - Recirculation Valve position (feedback)
20c - Vehicle speed in kph, updating only once per second. (real speed, not speed+safety margin as in the speedometer)
21c - Engine RPM in hundreds. This too only updates once per second.
22c - ?
23c - ?
24c - Sun sensor, exterior lights switch & panel lights control (term. 58 & 58d voltage) - used for A/C panel display illum.
25c - ?
26c - ?
27c - ?
28c - Fan speed?
29c - ?
30c - Engine run time in seconds (255 max.)(=0xff)
31c - Timing counter
32c - Displays test
33c - Software version?
34c - ?
35c - Outside temp. from inlet sensor (filtered?)
36c - temp?

Wow, that is cool info. This is the issue I am having

http://986forum.com/forums/performance-technical-chat/73412-blend-door-how-should-function.html