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Our UrS4/S6s have a cast aluminum clutch pedal. With age and a worn clutch (which increases the force on the clutch pedal needed to disengage/engage the clutch), the pedal eventually breaks due to fatigue cracking, as shown here:
At that point, you will need to remove the pedal and try to fix it (aluminum welding can be tricky) or replace it. If they are available, the clutch pedal PN is 4A1721315, available (maybe) from a dealer or GVAP.
Here is the whole cluster out of the car (you shouldn't need to do that) with the clutch pedal closest to you.
(RHD PNs are clutch pedal = 4A2721315B, brake pedal = 4A2721139, cluster bracket = 4A2721115B)
The R&R procedure for the clutch pedal (Item 2 in the diagram below) should be something like this:
1. Move drivers seat as far back as it will go.
2. Remove under steering column padding/shelves (knee bolster in NAmerica, storage cubby in the ROW)
3. Twist yourself into position (upside down, etc. as required)
4. Disconnect pedal from clutch master cylinder by pulling clip 11 off pin 15 and sliding pin 15 out of the clutch pedal.
5. Tie-wrap the overcentre spring (Item 10)so it remains contracted(important for the reinstall) and then disconnect the spring from the cluster bracket by removing the clip 11 at the end of item 10, etc.
6. Remove clip 9 from the end clutch pedal cluster post and slide the Item 2 clutch pedal off the post.
7. Installation is the reverse of removal (Good luck)
At that point, you will need to remove the pedal and try to fix it (aluminum welding can be tricky) or replace it. If they are available, the clutch pedal PN is 4A1721315, available (maybe) from a dealer or GVAP.
Here is the whole cluster out of the car (you shouldn't need to do that) with the clutch pedal closest to you.
(RHD PNs are clutch pedal = 4A2721315B, brake pedal = 4A2721139, cluster bracket = 4A2721115B)
The R&R procedure for the clutch pedal (Item 2 in the diagram below) should be something like this:
1. Move drivers seat as far back as it will go.
2. Remove under steering column padding/shelves (knee bolster in NAmerica, storage cubby in the ROW)
3. Twist yourself into position (upside down, etc. as required)
4. Disconnect pedal from clutch master cylinder by pulling clip 11 off pin 15 and sliding pin 15 out of the clutch pedal.
5. Tie-wrap the overcentre spring (Item 10)so it remains contracted(important for the reinstall) and then disconnect the spring from the cluster bracket by removing the clip 11 at the end of item 10, etc.
6. Remove clip 9 from the end clutch pedal cluster post and slide the Item 2 clutch pedal off the post.
7. Installation is the reverse of removal (Good luck)