Hydraulic system, filling and bleeding
WARNING: This page does not describe the selected car, but rather 14 other vehicles, including the 2009 Audi S4, 2009 Audi A4, 2008 Audi S4, 2008 Audi RS 4, and 2008 Audi A4. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
- The electro-hydraulic convertible top operation involves a closed hydraulic system. Generally, filling is necessary after a loss of oil (accident, leaks, etc.).
- Due to the lift and displacement effect of the pistons in the hydraulic cylinders, the hydraulic system must be filled when the convertible top is stored in the compartment.
- The convertible top must be moved with electro-hydraulic operation.
CAUTION:
Do not fill system above "MAX" marking as the pressure in the system can become so great that damage can result.
Filling
- Remove luggage compartment trim →
- 70 - INTERIOR TRIM
- 70 - INTERIOR TRIM for BODY INTERIOR - CABRIOLET
- Remove oil filler plug - arrow -.
- Fill Hydraulic Oil G 004 000 with a fill container until oil level is between "MIN" and "MAX" markings.
Bleeding
NOTE:
- Hydraulic system is self-bleeding. The system is bled after opening and closing the convertible top several times.
- Start the engine.
- Close and open the convertible top 4 - 5 times with electro-hydraulic operation.
- The convertible top must move smoothly and without jerking.
- Check oil level in oil reservoir - 2 - when convertible top is stored in compartment.
- Oil level must be between "MIN" and "MAX" markings.
- Top off hydraulic oil if necessary.
Tightening torques → Hydraulic system - assembly overview .