mj31

My vents will work fine ( front defroster, rear defroster, feet and body ) when the key is in the last position right before you turn the car over but once the car is running all my vents stop working ( no air coming out ) along with my rear defroster button not lighting up. Any advice would be appreciated.

Thanks

mj

Fuse C3 is for the alarm system and sunroof primarily. It is supposed to be 15A.

Have you tried re-training the sunroof?

Teaching

1. With the ignition switched on, press the "lift" button and move the lifting/sliding roof drive to the "raised" limit position.

2. Press "lift" button again and keep depressed. After around 10 seconds, a complete cycle takes place from the "raised" limit position to the positions "lower - open - close".

3. Teaching of the characteristics has been completed after this process.

Note:

The "raise" button must not be released during the entire process. In the event of a restart, the lifting/sliding roof must always be moved to the raised limit position first.

4. If the lifting/sliding roof drive should move back in Item 1, then the closing force limitation function has responded (lifting/sliding force drive was taught). The "open" button must be re-taught in this case.

Re-Teaching

1. Press the "open" button until the sliding roof stops. Then release the button. Press again until the lifting/sliding roof drive stops again. Then release the button.

2. Press "open" button again and keep depressed. The entire process takes place after approx. 10 seconds: "close - lift - lower - open - close"

I swapped out the old fuse for a new 15amp and was lucky enough to get it working again. I appreciate the tutorial on retraining the sunroof. I was never informed you could do that. I was told to hold the lift button for 30 seconds to reset? Thank you for providing me with the most in depth response i could hope for.

I took the fuse (row c # 3) out of my 99 996 c2 that controls the sunroof, windows, central alarm etc. because I'm having a problem with my key fob. After confirming that the fuse was fine I put it back in. At first my overhead lights, windows, sunroof and alarm were not working. I took the fuse out again made sure it was not blown and placed it back in. Now everything is working except my sunroof. I tried holding down the the sunroof button to reset it but to no avail. Any suggestions would be appreciated thanks.

Also the fuse that was in row c # 3 was a 30 amp though the fuse assignment said it should be a 15 amp?