Convertible Top Hydraulic Control Unit: Service and Repair

54 37 185 Removing And Installing/Replacing Hydraulic Unit (Drive) For Retractable Hardtop







Necessary preliminary work:
- Remove luggage compartment floor trim panel







IMPORTANT:
- Hydraulic fluid may emerge from the disconnected lines and the open connections on the hydraulic unit (drive).
- Protect components and work area with suitable materials (e.g. cloths).
- Follow repair instructions for hydraulic system.
- Do not fit hydraulic lines in kinked, crushed or transposed condition.







Release screws (1).

Remove cover (2) for hydraulic unit.







Cut open cable strap (1).

Installation note:
Replace faulty cable straps.

Detach foam part from hydraulic unit.

Remove relay (2) from holder.







Release plug connections (1) and disconnect.

Installation note:
Plug connections are coded against incorrect assembly.

Unlock plug connections (2) and disconnect.

Installation note:
Order of plug connection specified by wiring harness.







Disconnect hydraulic lines from hydraulic unit:
- Release screws and push lockplates (1) in direction of arrow.
- Detach hydraulic lines
- Remove hydraulic unit (drive).

Installation note:
Check fluid level or top up if necessary.

Hydraulic lines and connections are marked with numbers to prevent mix-ups.







Replacement only:
Use hexagon socket to close the bleeder screw (shutoff valve) on hydraulic unit.

Check fluid level or top up if necessary.